ClassInspector.java
| Index Score | ||
|---|---|---|
 |
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org.apache.derby.iapi.services.loader |
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Apache Derby |
View: Reasons, Metrics, Source Code
These are the metrics that contribute to the Enerjy Score for this file, ranked by impact. So the metrics listed at the top influence the score to a greater extent that the metrics listed at the bottom.
| Metric | Description | |
|---|---|---|
| JAVA0034 | JAVA0034 Missing braces in if statement |  |
| LINE_COMMENT | Number of line comments | |
| EXEC_COMMENTS | Comments in executable code | |
| COMPARISONS | Number of comparison operators | |
| CYCLOMATIC | Cyclomatic complexity | |
| SIZE | Size of the file in bytes | |
| COMMENTS | Comment lines | |
| LINES | Number of lines in the source file | |
| RETURNS | Number of return points from functions | |
| LOOPS | Number of loops | |
| DOC_COMMENT | Number of javadoc comment lines | |
| OPERATORS | Number of operators | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| PROGRAM_LENGTH | Halstead program length | |
| BLOCKS | Number of blocks | |
| LOC | Lines of code | |
| ELOC | Effective lines of code | |
| JAVA0049 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| OPERANDS | Number of operands | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| LOGICAL_LINES | Number of statements | |
| PARAMS | Number of formal parameter declarations | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| WHITESPACE | Number of whitespace lines | |
| JAVA0030 | JAVA0030 Private field not used | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| EXITS | Procedure exits | |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0125 | JAVA0125 Continue statement with label | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| NEST_DEPTH | Maximum nesting depth | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0076 | JAVA0076 Use of magic number | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0080 | JAVA0080 Import declaration not used | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0138 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0029 | JAVA0029 Private method not used | |
| JAVA0009 | JAVA0009 Protected member in final class | |
/*
Derby - Class org.apache.derby.iapi.services.loader.ClassInspector
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to you under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package org.apache.derby.iapi.services.loader;
import org.apache.derby.iapi.services.sanity.SanityManager;
import org.apache.derby.iapi.error.StandardException;
import org.apache.derby.iapi.reference.SQLState;
import java.lang.reflect.*;
import java.util.StringTokenizer;
import java.util.List;
import java.util.ArrayList;
import java.util.NoSuchElementException;
import java.util.Collections;
/**
Methods to find out relationships between classes and methods within a class.
All class names within this interface are treated as java language class names,
e.g. int, COM.foo.Myclass, int[], java.lang.Object[]. That is java internal
class names as defined in the class file format are not understood.
*/
public final class ClassInspector
{
private static final String[] primTypeNames =
{"boolean", "byte", "char", "short", "int", "long", "float", "double"};
// collect these as static, instead of each time allocates these new
// Strings for every method resolution
private static final String[] nonPrimTypeNames =
{"java.lang.Boolean", "java.lang.Byte", "java.lang.Character",
"java.lang.Short", "java.lang.Integer", "java.lang.Long",
"java.lang.Float", "java.lang.Double"};
private static final String OBJECT_TYPE_NAME = "java.lang.Object";
private static final String STRING_TYPE_NAME = "java.lang.String";
private static final String BIGDECIMAL_TYPE_NAME = "java.math.BigDecimal";
private final ClassFactory cf;
/**
DO NOT USE! use the method in ClassFactory.
*/
public ClassInspector(ClassFactory cf) {
this.cf = cf;
}
/**
* Is the given object an instance of the named class?
*
* @param className The name of the class
* @param obj The object to test to see if it's an instance
* of the named class
*
* @return true if obj is an instanceof className, false if not
*/
public boolean instanceOf(String className, Object obj)
throws ClassNotFoundException
{
Class clazz = getClass(className);
// is className an untyped null
if (clazz == null)
return false;
return clazz.isInstance(obj);
}
/**
* Is one named class assignable to another named class or interface?
*
* @param fromClassName The name of the class to be assigned
* @param toClassName The name of the class to be assigned to
*
* @return true if an object of type fromClass can be assigned to an
* object of type toClass, false if not.
*/
public boolean assignableTo(String fromClassName, String toClassName)
{
try
{
Class toClass = getClass(toClassName);
// is toClass an untyped null
if (toClass == null) {
return false;
}
Class fromClass = getClass(fromClassName);
// is fromClass an untyped null
if (fromClass == null)
return !toClass.isPrimitive() || (toClass == Void.TYPE);
return toClass.isAssignableFrom(fromClass);
}
catch (ClassNotFoundException cnfe)
{
/* If either class can't be found, they can't be assigned */
return false;
}
}
/**
* Does the named class exist, and is it accessible?
*
* @param className The name of the class to test for existence
*
* @return true if the class exists and is accessible, false if not
*/
public boolean accessible(String className)
throws ClassNotFoundException
{
Class theClass = getClass(className);
if (theClass == null)
return false;
/* Classes must be public to be accessible */
if (! Modifier.isPublic(theClass.getModifiers()))
return false;
return true;
}
/**
* Get the Java name of the return type from a Member representing
* a method or the type of a Member representing a field.
*
* @param member A Member representing the method for
* which we want the return type.
*
* @return A Java-language-style string describing the return type of
* the method (for example, it returns "int" instead of "I".
*/
public String getType(Member member)
{
Class type;
if (member instanceof Method)
type = ((Method) member).getReturnType();
else if (member instanceof Field)
type = ((Field) member).getType();
else if (member instanceof Constructor)
type = ((Constructor) member).getDeclaringClass();
else
type = Void.TYPE;
return ClassInspector.readableClassName(type);
}
/**
* Find a public method that implements a given signature.
* The signature is given using the full Java class names of the types.
<BR>
* A untyped null paramter is indicated by passing in an empty string ("")
* as its class name.
<BR>
If receiverType respresents an interface then the methods of java.lang.Object
arer included in the candidate list.
<BR>
If the caller is simply checking to see that a public method with the
specified name exists, regardless of the signature, exists, then the
caller should pass in a null for parmTypes. (This is useful for checking
the validity of a method alias when creating one.)
<BR>
We use a two-pass algorithm to resolve methods. In the first pass, we
use all "object" types to try to match a method. If this fails, in the
second pass, an array of "primitive" types (if the parameter has one,
otherwise the same object type is used) is passed in, as well as the
"object" type array. For each parameter of a method, we try to match it
against either the "object" type, or the "primitive" type. Of all the
qualified candidate methods found, we choose the closest one to the input
parameter types. This involves comparing methods whose parameters are
mixed "object" and "primitive" types in the second pass. This is
eventually handled in classConvertableFromTo.
*
* @param receiverType The class name of the receiver
* @param methodName The name of the method
* @param parmTypes An array of class names representing the
* parameter types. Pass a zero-element array if
* there are no parameters. Pass a null if it is
* okay to match any signature.
* @param primParmTypes This is used in the second pass of the two-pass
* method resolution algorithm. Use primitive type
* if it has one, otherwise use same object type
* @param isParam Array of booleans telling whether parameter is a ?.
* @param staticMethod Find a static method.
@param repeatLastParameter If true the last parameter may be repeated any number of times (total count must be greater than one).
If false the laste parameter is matched as usual. This also requires an exact match on the last parameter type.
*
* @return A Member representing the matching method. Returns null
* if no such method.
*
* @exception ClassNotFoundException One or more of the classes does
* not exist.
* @exception StandardException Thrown on ambiguous method invocation.
*
* @see Member
* @see Modifier
*/
public Member findPublicMethod(String receiverType,
String methodName,
String[] parmTypes,
String[] primParmTypes,
boolean[] isParam,
boolean staticMethod,
boolean repeatLastParameter)
throws ClassNotFoundException, StandardException
{
Class receiverClass = getClass(receiverType);
if (receiverClass == null)
return null;
// primitives don't have methods
// note that arrays do since they are objects they have
// all the methods of java.lang.Object
if (receiverClass.isPrimitive()) {
return null;
}
// if parmTypes is null, then the caller is simply
// looking to see if any public method with the
// specified name exists, regardless of its signature
if (parmTypes == null) {
Method[] methods = receiverClass.getMethods();
for (int index = 0; index < methods.length; index++) {
if (staticMethod) {
if (!Modifier.isStatic(methods[index].getModifiers())) {
continue;
}
}
if (methodName.equals(methods[index].getName())) {
// We found a match
return methods[index];
}
}
// No match
return null;
}
// convert the parameter types to classes
Class[] paramClasses = new Class[parmTypes.length];
Class[] primParamClasses = null;
if (primParmTypes != null)
primParamClasses = new Class[primParmTypes.length];
for (int i = 0; i < paramClasses.length; i++)
{
paramClasses[i] = getClass(parmTypes[i]);
if (primParmTypes == null)
continue;
if (primParmTypes[i].equals(parmTypes[i])) // no separate primitive
primParamClasses[i] = null;
else
primParamClasses[i] = getClass(primParmTypes[i]);
}
// no overloading possible if there are no arguments, so perform
// an exact match lookup.
if (paramClasses.length == 0) {
try {
Method method = receiverClass.getMethod(methodName, paramClasses);
if (staticMethod) {
if (!Modifier.isStatic(method.getModifiers()))
return null;
}
return method;
} catch (NoSuchMethodException nsme2) {
// if we are an interface then the method could be defined on Object
if (!receiverClass.isInterface())
return null;
}
}
// now the tricky method resolution
Member[] methodList = receiverClass.getMethods();
// if we have an interface we need to add the methods of Object into the mix
if (receiverClass.isInterface()) {
Member[] objectMethods = java.lang.Object.class.getMethods();
if (methodList.length == 0) {
methodList = objectMethods;
} else {
Member[] set = new Member[methodList.length + objectMethods.length];
System.arraycopy(methodList, 0, set, 0, methodList.length);
System.arraycopy(objectMethods, 0, set, methodList.length, objectMethods.length);
methodList = set;
}
}
return resolveMethod(receiverClass, methodName, paramClasses,
primParamClasses, isParam, staticMethod, repeatLastParameter, methodList);
}
/**
* Find a public field for a class.
This follows the sematics of the java compiler for locating a field.
This means if a field fieldName exists in the class with package, private or
protected then an error is raised. Even if the field hides a field fieldName
in a super-class/super--interface. See the JVM spec on fields.
*
* @param receiverType The class name of the receiver
* @param fieldName The name of the field
* @param staticField Find a static field
*
* @return A Member representing the matching field.
* @exception StandardException Class or field does not exist or is not public or a security exception.
*
* @see Member
* @see Modifier
*/
public Member findPublicField(String receiverType,
String fieldName,
boolean staticField)
throws StandardException
{
Exception e = null;
try {
Class receiverClass = getClass(receiverType);
if (receiverClass == null)
return null;
if (receiverClass.isArray() || receiverClass.isPrimitive()) {
// arrays don't have fields (the fake field 'length' is not returned here)
return null;
}
int modifier = staticField ? (Modifier.PUBLIC | Modifier.STATIC) : Modifier.PUBLIC;
// Look for a public field first
Field publicField = receiverClass.getField(fieldName);
if ((publicField.getModifiers() & modifier) == modifier)
{
/*
If the class is an interface then we avoid looking for a declared field
that can hide a super-class's public field and not be accessable. This is because
a interface's fields are always public. This avoids a security check.
*/
if (receiverClass.isInterface() || (publicField.getDeclaringClass().equals(receiverClass)))
return publicField;
/*
Now check to see if there is a declared field that hides the public field.
*/
try {
Field declaredField = receiverClass.getDeclaredField(fieldName);
if (SanityManager.DEBUG) {
if ((declaredField.getModifiers() & Modifier.PUBLIC) == Modifier.PUBLIC)
SanityManager.THROWASSERT("declared field not expected to be public here " + declaredField);
}
} catch (NoSuchFieldException nsfe) {
// no field hides the public field in the super class
return publicField;
}
}
} catch (ClassNotFoundException cnfe) {
e = cnfe;
} catch (NoSuchFieldException nsfep) {
e = nsfep;
} catch (SecurityException se) {
e = se;
}
throw StandardException.newException(
staticField ? SQLState.LANG_NO_STATIC_FIELD_FOUND : SQLState.LANG_NO_FIELD_FOUND,
e, fieldName, receiverType);
}
/**
* Find a public constructor that implements a given signature.
* The signature is given using the full Java class names of the types.
<BR>
* A untyped null paramter is indicated by passing in an empty string ("")
* as its class name.
*
* @param receiverType The class name of the receiver
* @param parmTypes An array of class names representing the
* parameter types. Pass a zero-element array if
* there are no parameters.
* @param primParmTypes This is used in the second pass of the two-pass
* method resolution algorithm. Use primitive type
* if it has one, otherwise use same object type
* @param isParam Array of booleans telling whether parameter is a ?.
*
* @return A Member representing the matching constructor. Returns null
* if no such constructor.
*
* @exception ClassNotFoundException One or more of the classes does
* not exist.
* @exception StandardException Thrown on ambiguous constructor invocation.
*
* @see Member
* @see Modifier
*/
public Member findPublicConstructor(String receiverType,
String[] parmTypes,
String[] primParmTypes,
boolean[] isParam)
throws ClassNotFoundException, StandardException
{
Class receiverClass = getClass(receiverType);
if (receiverClass == null)
return null;
// arrays, primitives, and interfaces do not have constructors
if (receiverClass.isArray() || receiverClass.isPrimitive() || receiverClass.isInterface()) {
return null;
}
// convert the parameter types to classes
Class[] paramClasses = new Class[parmTypes.length];
Class[] primParamClasses = null;
if (primParmTypes != null)
primParamClasses = new Class[primParmTypes.length];
boolean unknownParameters = false;
for (int i = 0; i < paramClasses.length; i++) {
paramClasses[i] = getClass(parmTypes[i]);
if (paramClasses[i] == null)
unknownParameters = true;
if (primParmTypes == null)
continue;
if (primParmTypes[i].equals(parmTypes[i])) // no separate primitive
primParamClasses[i] = null;
else
primParamClasses[i] = getClass(primParmTypes[i]);
}
try {
if (!unknownParameters && (primParmTypes == null)) {
// look for an exact match for first pass
Member method = receiverClass.getConstructor(paramClasses);
return method;
}
} catch (NoSuchMethodException nsme) {
// no overloading possible if there are no arguments
if (paramClasses.length == 0)
return null;
// now the tricky method resolution
}
// name is only used for debugging
return resolveMethod(receiverClass, "<init>", paramClasses,
primParamClasses, isParam, false, false,
receiverClass.getConstructors());
}
/**
* Get the parameter types for a method described by a Member as a String[].
*
* @param method A Member describing a method
*
* @return A String[] describing the parameters of the method
*/
public String[] getParameterTypes(Member method)
{
Class[] parameterClasses;
if (method instanceof Method) {
parameterClasses = ((Method) method).getParameterTypes();
} else {
parameterClasses = ((Constructor) method).getParameterTypes();
}
String[] parameterTypes = new String[parameterClasses.length];
for (int i = 0; i < parameterTypes.length; i++) {
parameterTypes[i] = ClassInspector.readableClassName(parameterClasses[i]);
}
return parameterTypes;
}
/**
* Determine whether a type is a Java primitive, like int or boolean
*
* @param typeName The name of the Java type
*
* @return true if it's a primitive type
*/
public static boolean primitiveType(String typeName)
{
for (int i = 0; i < primTypeNames.length; i++)
{
if (typeName.equals(primTypeNames[i]))
return true;
}
return false;
}
/**
* Tricky function to resolve a method. If primParamClasses is null
* we know it's first pass. First pass try to match as all "object"
* types, second pass try to match any combination of "object" and
* "primitive" types. Find the closest match among all the qualified
* candidates. If there's a tie, it's ambiguous.
*
* The preceding paragraph is a bit misleading. As of release 10.4, the
* second pass did not consider arbitrary combinations of primitive and
* wrapper types. This is because the first pass removed from consideration
* candidates which would be allowed under ANSI rules. As a fix for bug
* DERBY-3652, we now allow primitive and wrapper type matches during
* the first pass. The ANSI rules are documented in DERBY-3652.
*
* @param receiverClass the class who holds the methods
* @param methodName the name of method
* @param paramClasses object type classes of input parameters
* @param primParamClasses primitive type classes or null
* @param isParam isParam (for ?) array
* @param staticMethod static method or not
* @param methods method stack
* @return the matched method
*
**/
private Member resolveMethod(
Class receiverClass,
String methodName,
Class[] paramClasses,
Class[] primParamClasses,
boolean[] isParam,
boolean staticMethod,
boolean repeatLastParameter,
Member[] methods)
throws StandardException
{
if (SanityManager.DEBUG) {
if (SanityManager.DEBUG_ON("MethodResolutionInfo"))
{
SanityManager.DEBUG("MethodResolutionInfo",
"MRI - Begin method resolution trace for " + methodName +
"() with " + paramClasses.length + (repeatLastParameter ? "+" : "") + " parameters");
for (int parmCtr = 0; parmCtr < paramClasses.length; parmCtr++)
{
SanityManager.DEBUG("MethodResolutionInfo",
"MRI - Parameter #" + parmCtr +
" is of type " + (paramClasses[parmCtr] == null ? "null" : paramClasses[parmCtr].getName()));
}
}
}
/* Step through all the methods available in this class */
int candidateIndex = -1;
boolean firstTimeAround = true;
boolean ambiguous;
boolean somethingChanged;
do {
ambiguous = false;
somethingChanged = false;
nextMethod: for (int i = 0; i < methods.length; i++) {
Member currentMethod = methods[i];
// on second and later times around there will be null entries
// also, don't compare ourself to ourself
if ((currentMethod == null) ||
(i == candidateIndex))
{
continue;
}
// must have the same number of parameters
Class[] currentMethodParameters = currentMethod instanceof Method ?
((Method) currentMethod).getParameterTypes():
((Constructor) currentMethod).getParameterTypes();
// only check the basic stuff once
if (firstTimeAround) {
if (repeatLastParameter) {
// match any number of parameters greater or equal to
// the passed in number, but repeating the last type.
if (currentMethodParameters.length < paramClasses.length) {
methods[i] = null; // remove non-applicable methods
continue;
}
} else {
// regular match on parameter count
if (currentMethodParameters.length != paramClasses.length) {
methods[i] = null; // remove non-applicable methods
continue;
}
}
/* Look only at methods that match the modifiers */
if (staticMethod && !Modifier.isStatic(currentMethod.getModifiers())) {
methods[i] = null; // remove non-applicable methods
continue;
}
/* Look only at methods with the right name */
if (!methodName.startsWith("<")) {
if ( ! methodName.equals(currentMethod.getName())) {
methods[i] = null; // remove non-applicable methods
continue;
}
}
if (repeatLastParameter) {
// With N parameters requested check all parameters from N-1 to end are equal
// to the requested parameter.
for (int pr = paramClasses.length - 1; pr < currentMethodParameters.length; pr++) {
if (!currentMethodParameters[pr].equals(paramClasses[paramClasses.length - 1])) {
methods[i] = null; // remove non-applicable methods
continue nextMethod;
}
}
}
}
if (SanityManager.DEBUG) {
if (SanityManager.DEBUG_ON("MethodResolutionInfo")) {
SanityManager.DEBUG("MethodResolutionInfo",
"MRI - Considering :" + currentMethod.toString());
}
}
//
// According to the ANSI rules, primitives and their
// corresponding wrapper types are equally good for resolving
// numeric arguments of user-coded functions and procedures. See
// DERBY-3652 for a description of the ANSI rules.
//
// can the required signature be converted to those of this method?
if (!signatureConvertableFromTo(paramClasses, primParamClasses,
currentMethodParameters, isParam, true)) {
if (SanityManager.DEBUG) {
if (SanityManager.DEBUG_ON("MethodResolutionInfo")) {
SanityManager.DEBUG("MethodResolutionInfo",
"MRI - Skipping :" + currentMethod.toString());
}
}
methods[i] = null; // remove non-applicable methods
continue;
}
if (SanityManager.DEBUG) {
if (SanityManager.DEBUG_ON("MethodResolutionInfo")) {
SanityManager.DEBUG("MethodResolutionInfo", "MRI - Match found ");
}
}
/* Is this the first match? */
if (candidateIndex == -1)
{
candidateIndex = i;
if (SanityManager.DEBUG) {
if (SanityManager.DEBUG_ON("MethodResolutionInfo")) {
SanityManager.DEBUG("MethodResolutionInfo",
"MRI - Current method is now candidate");
}
}
continue;
}
//
// Before the fixes to DERBY-3652, we used to weed out
// ambiguities by applying the rules from section 15.11
// of the Java Language Specification. These are not the
// ANSI resolution rules however. The code to weed out
// ambiguities has been removed.
//
/* We have seen an ambiguous situation; one of the cases may
* tie on each parameter.
*/
ambiguous = true;
if (SanityManager.DEBUG) {
if (SanityManager.DEBUG_ON("MethodResolutionInfo")) {
SanityManager.DEBUG("MethodResolutionInfo", "MRI - Ambiguous match");
}
}
}
firstTimeAround = false;
} while (ambiguous && somethingChanged);
if (SanityManager.DEBUG) {
if (SanityManager.DEBUG_ON("MethodResolutionInfo")) {
SanityManager.DEBUG("MethodResolutionInfo",
"MRI - End method resolution trace for " + methodName + "()" +
"\nMRI - ");
}
}
/* Throw an exception here if the method invocation ambiguous */
if (ambiguous)
{
/* Put the parameter type names into a single string */
String parmTypesString = "";
for (int i = 0; i < paramClasses.length; i++)
{
if (i != 0)
parmTypesString += ", ";
parmTypesString += (paramClasses[i] == null ? "null" : paramClasses[i].getName());
if (primParamClasses != null && primParamClasses[i] != null)
parmTypesString += "(" + primParamClasses[i].getName() + ")";
}
throw StandardException.newException(SQLState.LANG_AMBIGUOUS_METHOD_INVOCATION,
receiverClass.getName(),
methodName,
parmTypesString);
}
if (candidateIndex == -1)
return null;
if (SanityManager.DEBUG) {
if (methods[candidateIndex] == null)
SanityManager.THROWASSERT("methods is null at index " + candidateIndex);
}
return methods[candidateIndex];
}
/**
Get (load) the class for the given class name.
This method converts any java language class name
into a Class object. This includes cases like String[]
and primitive types.
This will attempt to load the class from the application set.
@exception ClassNotFoundException Class cannot be found, or
a SecurityException or LinkageException was thrown loading the class.
*/
public Class getClass(String className) throws ClassNotFoundException {
if ((className == null) ||
(className.length() == 0))
{
return null;
}
int arrayDepth = 0;
int classNameLength = className.length();
int position = classNameLength - 2;
while ((position >= 0) && className.substring(position, position + 2).equals("[]")) {
arrayDepth++;
position -= 2;
classNameLength -= 2;
}
if (classNameLength <= 0) {
// a bogus class name, let Class.forName deal with the error.
return Class.forName(className);
}
if (arrayDepth != 0)
className = className.substring(0, classNameLength);
Class baseClass = null;
if (classNameLength >=3 && classNameLength <=7) {
if ("int".equals(className))
baseClass = Integer.TYPE;
else if ("short".equals(className))
baseClass = Short.TYPE;
else if ("boolean".equals(className))
baseClass = Boolean.TYPE;
else if ("byte".equals(className))
baseClass = Byte.TYPE;
else if ("float".equals(className))
baseClass = Float.TYPE;
else if ("double".equals(className))
baseClass = Double.TYPE;
else if ("long".equals(className))
baseClass = Long.TYPE;
else if ("char".equals(className))
baseClass = Character.TYPE;
else if ("void".equals(className))
baseClass = Void.TYPE;
}
if (baseClass == null) {
baseClass = cf.loadApplicationClass(className);
}
if (arrayDepth == 0)
return baseClass;
// need to create an actual instance of the array type
// and get its class from that. There is no other documented
// way to do this. While a getName() on an array class
// returns [[[Lclassname; format it's not consistent
// with primitive types, e.g.
//
// Integer.TYPE.getName() returns "int"
// Class.forName(new int[0] returns "[I"
//
if (arrayDepth == 1)
return Array.newInstance(baseClass, 0).getClass();
return Array.newInstance(baseClass, new int[arrayDepth]).getClass();
}
/**
Is method/constructor T more or equally specific than method U.
See the Java Language Specification section 15.11.2.2.
*/
private boolean isMethodMoreSpecificOrEqual(Member T, Member U, boolean[] isParam) {
Class[] TC;
Class[] UC;
if (T instanceof Method) {
if (!classConvertableFromTo(T.getDeclaringClass(), U.getDeclaringClass(), true))
return false;
TC = ((Method) T).getParameterTypes();
UC = ((Method) U).getParameterTypes();
} else {
TC = ((Constructor) T).getParameterTypes();
UC = ((Constructor) U).getParameterTypes();
}
return signatureConvertableFromTo(TC, null, UC, isParam, true);
}
/**
* Can we convert a signature from fromTypes(primFromTypes) to toTypes.
* "mixTypes" is a flag to show if object/primitive type conversion is
* possible; this is used for comparing two candidate methods in the
* second pass of the two pass method resolution.
*
* @param fromTypes from types' classes
* @param primFromTypes primitive from types or null
* @param toTypes to types' classes
* @param isParam is parameter (?) or not
* @param mixTypes mixing object/primitive types for comparison
**/
private boolean signatureConvertableFromTo(Class[] fromTypes, Class[] primFromTypes,
Class[] toTypes, boolean[] isParam,
boolean mixTypes) {
// In the case repeatLastParameter was true, then the two methods may have
// different numbers of parameters. We need to compare only the non-repeated
// parameters, which is the number of input parameters.
int checkCount = fromTypes.length;
if (toTypes.length < checkCount)
checkCount = toTypes.length;
for (int i = 0; i < checkCount; i++) {
Class fromClass = fromTypes[i];
Class toClass = toTypes[i];
// this means an untyped null was passed in. Can only ever be in the
// from side as the null can only be in the signature passed in by
// the caller of findPublicMethod. Any signatures of existing methods
// are always typed.
if (fromClass == null) {
// primitive types are only considered on
// the 2nd pass
if (toClass.isPrimitive())
{
if ((primFromTypes == null) // first pass
|| (isParam != null && ! isParam[i]))
{
return false;
}
}
continue;
}
if ((!classConvertableFromTo(fromClass, toClass, mixTypes)) &&
// primitive type, if any, also doesn't work
((primFromTypes == null) || (primFromTypes[i] == null) ||
(!classConvertableFromTo(primFromTypes[i], toClass, mixTypes))
))
return false;
}
return true;
}
/**
* Can we convert a fromClass to toClass.
* "mixTypes" is a flag to show if object/primitive type conversion is
* possible; this is used for comparing two candidate methods in the
* second pass of the two pass method resolution.
*
* @param fromClass from class
* @param toClass to class
* @param mixTypes mixing object/primitive types for comparison
**/
protected boolean classConvertableFromTo(Class fromClass, Class toClass, boolean mixTypes) {
//
// ANSI rules do not allow widening
//
if ( fromClass.getName().equals( toClass.getName() ) ) { return true; }
// When comparing two candidate methods to see which one is closer,
// we want to mix object type and primitive type, because they could
// both be chosen in the second pass. But when deciding if a method
// is qualified (to be a candidate), we do not want to mix types at
// any time, the reason is that we can NOT do more than one step
// conversion: for example, input parameter is BigDecimal, we convert
// it to double for method resolution, we can NOT convert it again to
// Double to match a method. "(paramTypes, primParamTypes)" already
// includes all the one-step conversions. But at any time we do want
// to see if two primitives are convertable.
if ((!(toClass.isPrimitive() && fromClass.isPrimitive())) && (!mixTypes))
return false;
// There are nine predefined Class objects to represent the eight
// primitive Java types and void. We also handle prim vs. non-prim
// conversion of the same type. boolean and double are only convertable
// to themseleves. void should never be seen here. In the second pass
// we treat primitive type and the corrsponding non-primitive type
// uniformly
String fromName = fromClass.getName(), toName = toClass.getName();
if ((fromClass == Boolean.TYPE) || fromName.equals(nonPrimTypeNames[0]))
{
if ((toClass == Boolean.TYPE) || toName.equals(nonPrimTypeNames[0]))
return true;
} else if ((fromClass == Byte.TYPE) || fromName.equals(nonPrimTypeNames[1]))
{
if ((toClass == Byte.TYPE) || toName.equals(nonPrimTypeNames[1]) ||
// we never need to see if toClass is of wider "object" type,
// because a wider "object" type and a narrower "primitive"
// type can never both be candidate, eg, "int" and "Long" can
// never both accomodate the same parameter; while "long" and
// "Integer" can.
(toClass == Short.TYPE) ||
(toClass == Integer.TYPE) ||
(toClass == Long.TYPE) ||
(toClass == Float.TYPE) ||
(toClass == Double.TYPE) )
return true;
} else if ((fromClass == Character.TYPE) || fromName.equals(nonPrimTypeNames[2]))
{
if ((toClass == Character.TYPE) || toName.equals(nonPrimTypeNames[2]) ||
(toClass == Integer.TYPE) ||
(toClass == Long.TYPE) ||
(toClass == Float.TYPE) ||
(toClass == Double.TYPE) )
return true;
} else if ((fromClass == Short.TYPE) || fromName.equals(nonPrimTypeNames[3]))
{
if ((toClass == Short.TYPE) || toName.equals(nonPrimTypeNames[4]) )
return true;
} else if ((fromClass == Integer.TYPE) || fromName.equals(nonPrimTypeNames[4]))
{
if ((toClass == Integer.TYPE) || toName.equals(nonPrimTypeNames[4]) )
return true;
} else if ((fromClass == Long.TYPE) || fromName.equals(nonPrimTypeNames[5]))
{
if ((toClass == Long.TYPE) || toName.equals(nonPrimTypeNames[5]) )
return true;
} else if ((fromClass == Float.TYPE) || fromName.equals(nonPrimTypeNames[6]))
{
if ((toClass == Float.TYPE) || toName.equals(nonPrimTypeNames[6]) )
return true;
} else if ((fromClass == Double.TYPE) || fromName.equals(nonPrimTypeNames[7]))
{
if ((toClass == Double.TYPE) || toName.equals(nonPrimTypeNames[7]))
return true;
}
return false;
}
/**
* Translate a JVM-style type descriptor to a Java-language-style type
* name.
*
* @param clazz The String that contains the JVM type name
*
* @return The Java-language-style type name
*/
public static String readableClassName(Class clazz)
{
if (!clazz.isArray())
return clazz.getName();
int arrayDepth = 0;
do {
arrayDepth++;
clazz = clazz.getComponentType();
} while (clazz.isArray());
StringBuffer sb = new StringBuffer(clazz.getName());
for (int i = 0; i < arrayDepth; i++) {
sb.append("[]");
}
return sb.toString();
}
/**
* Determine whether or not the received class can be
* loaded.
*
* @param className The name of the class in question
* @return True if className can be loaded, false otherwise
*/
public static boolean classIsLoadable(String className)
{
try {
Class.forName(className);
return true;
} catch (ClassNotFoundException ce) {
return false;
} catch (LinkageError ce) {
return false;
}
}
/**
* Get the declaring class for a method.
*
* @param method A Member describing a method
*
* @return A String with the declaring class
*
* @see Member#getDeclaringClass
*/
public String getDeclaringClass(Member method)
{
return method.getDeclaringClass().getName();
}
}
The table below shows all metrics for ClassInspector.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 112.00 | Number of blocks | |
| BLOCK_COMMENT | 39.00 | Number of block comment lines | |
| COMMENTS | 370.00 | Comment lines | |
| COMMENT_DENSITY | 0.84 | Comment density | |
| COMPARISONS | 158.00 | Number of comparison operators | |
| CYCLOMATIC | 192.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 21.00 | Comments in declarations | |
| DOC_COMMENT | 236.00 | Number of javadoc comment lines | |
| ELOC | 439.00 | Effective lines of code | |
| EXEC_COMMENTS | 50.00 | Comments in executable code | |
| EXITS | 53.00 | Procedure exits | |
| FUNCTIONS | 18.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 110.27 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 129.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 1.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 1.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 1.00 | JAVA0029 Private method not used | |
| JAVA0030 | 3.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 55.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 6.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 5.00 | JAVA0076 Use of magic number | |
| JAVA0077 | 0.00 | JAVA0077 Private field not used in declaring class | |
| JAVA0078 | 0.00 | JAVA0078 Floating point values compared with == | |
| JAVA0079 | 0.00 | JAVA0079 Use of instance to reference static member | |
| JAVA0080 | 5.00 | JAVA0080 Import declaration not used | |
| JAVA0081 | 0.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 0.00 | JAVA0082 Unnecessary widening cast | |
| JAVA0083 | 0.00 | JAVA0083 Unnecessary instanceof test | |
| JAVA0084 | 0.00 | JAVA0084 Should use compound assignment operator | |
| JAVA0085 | 0.00 | JAVA0085 Use of sun.* class | |
| JAVA0087 | 0.00 | JAVA0087 Use of Thread.sleep() | |
| JAVA0089 | 0.00 | JAVA0089 Use of restricted package | |
| JAVA0092 | 0.00 | JAVA0092 Use of restricted type | |
| JAVA0093 | 0.00 | JAVA0093 Redundant assignment | |
| JAVA0094 | 0.00 | JAVA0094 Field hides a superclass field | |
| JAVA0095 | 0.00 | JAVA0095 Uninitialized private field | |
| JAVA0096 | 0.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 0.00 | JAVA0098 Minimize use of implicit field initializers | |
| JAVA0100 | 0.00 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0101 | 0.00 | JAVA0101 Unnecessary modifier for field in interface | |
| JAVA0102 | 0.00 | JAVA0102 Last statement in finalize() not super.finalize() | |
| JAVA0103 | 0.00 | JAVA0103 Explicit call to finalize() | |
| JAVA0104 | 0.00 | JAVA0104 finalize() only calls super.finalize() | |
| JAVA0105 | 0.00 | JAVA0105 Duplicate import declaration | |
| JAVA0106 | 0.00 | JAVA0106 Unnecessary import from current package | |
| JAVA0108 | 6.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 4.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 1.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 1.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 3.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 0.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 0.00 | JAVA0123 Use all three components of for loop | |
| JAVA0125 | 1.00 | JAVA0125 Continue statement with label | |
| JAVA0126 | 0.00 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0128 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 0.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 2.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 1.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 2552.00 | JAVA0145 Tab character used in source file | |
| JAVA0150 | 0.00 | JAVA0150 java.lang.Error (or subclass) thrown | |
| JAVA0153 | 0.00 | JAVA0153 Inefficient conversion of integer to string | |
| JAVA0159 | 0.00 | JAVA0159 Inefficient conversion of string to integer | |
| JAVA0160 | 0.00 | JAVA0160 Method does not throw specified exception | |
| JAVA0161 | 0.00 | JAVA0161 Conditional wait() not in loop | |
| JAVA0163 | 0.00 | JAVA0163 Empty statement | |
| JAVA0165 | 0.00 | JAVA0165 Conflicting return statement in finally block | |
| JAVA0166 | 0.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 1.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 6.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 2.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 1092.00 | Number of lines in the source file | |
| LINE_COMMENT | 95.00 | Number of line comments | |
| LOC | 566.00 | Lines of code | |
| LOGICAL_LINES | 228.00 | Number of statements | |
| LOOPS | 14.00 | Number of loops | |
| NEST_DEPTH | 7.00 | Maximum nesting depth | |
| OPERANDS | 1207.00 | Number of operands | |
| OPERATORS | 2534.00 | Number of operators | |
| PARAMS | 46.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3741.00 | Halstead program length | |
| PROGRAM_VOCAB | 356.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 83.00 | Number of return points from functions | |
| SIZE | 34853.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 301.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 55.00 | Number of unique operators | |
| WHITESPACE | 156.00 | Number of whitespace lines | |