LazyDynaList.java
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org.apache.commons.beanutils |
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Commons BeanUtils |
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 | |
|---|---|---|
| DOC_COMMENT | Number of javadoc comment lines |  |
| COMMENTS | Comment lines | |
| DECL_COMMENTS | Comments in declarations | |
| SIZE | Size of the file in bytes | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| LINES | Number of lines in the source file | |
| COMPARISONS | Number of comparison operators | |
| LOOPS | Number of loops | |
| JAVA0166 | JAVA0166 Generic exception caught | |
| LINE_COMMENT | Number of line comments | |
| JAVA0285 | JAVA0285 Dereference of potentially null variable | |
| JAVA0254 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0058 | JAVA0058 Constructor calls super() | |
| BLOCKS | Number of blocks | |
| EXEC_COMMENTS | Comments in executable code | |
| CYCLOMATIC | Cyclomatic complexity | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| OPERATORS | Number of operators | |
| EXITS | Procedure exits | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| PROGRAM_LENGTH | Halstead program length | |
/*
* 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.commons.beanutils;
import java.util.ArrayList;
import java.util.Map;
import java.util.Collection;
import java.util.Iterator;
import java.lang.reflect.Array;
/**
* <h2><i>Lazy</i> DynaBean List.</h2>
*
* <p>There are two main purposes for this class:</p>
* <ul>
* <li>To provide <i>Lazy List</i> behaviour - automatically
* <i>growing</i> and <i>populating</i> the <code>List</code>
* with either <code>DynaBean</code>, <code>java.util.Map</code>
* or POJO Beans.</li>
* <li>To provide a straight forward way of putting a Collection
* or Array into the lazy list <i>and</i> a straight forward
* way to get it out again at the end.</li>
* </ul>
*
* <p>All elements added to the List are stored as <code>DynaBean</code>'s:</p>
* <ul>
* <li><code>java.util.Map</code> elements are "wrapped" in a <code>LazyDynaMap</code>.</i>
* <li>POJO Bean elements are "wrapped" in a <code>WrapDynaBean.</code></i>
* <li><code>DynaBean</code>'s are stored un-changed.</i>
* </ul>
*
* <h4><code>toArray()</code></h4>
* <p>The <code>toArray()</code> method returns an array of the
* elements of the appropriate type. If the <code>LazyDynaList</code>
* is populated with <code>java.util.Map</code> objects a
* <code>Map[]</code> array is returned.
* If the list is populated with POJO Beans an appropriate
* array of the POJO Beans is returned. Otherwise a <code>DynaBean[]</code>
* array is returned.
* </p>
*
* <h4><code>toDynaBeanArray()</code></h4>
* <p>The <code>toDynaBeanArray()</code> method returns a
* <code>DynaBean[]</code> array of the elements in the List.
* </p>
*
* <p><strong>N.B.</strong>All the elements in the List must be the
* same type. If the <code>DynaClass</code> or <code>Class</code>
* of the <code>LazyDynaList</code>'s elements is
* not specified, then it will be automatically set to the type
* of the first element populated.
* </p>
*
* <h3>Example 1</h3>
* <p>If you have an array of <code>java.util.Map[]</code> - you can put that into
* a <code>LazyDynaList</code>.</p>
*
* <pre><code>
* TreeMap[] myArray = .... // your Map[]
* List lazyList = new LazyDynaList(myArray);
* </code></pre>
*
* <p>New elements of the appropriate Map type are
* automatically populated:</p>
*
* <pre><code>
* // get(index) automatically grows the list
* DynaBean newElement = (DynaBean)lazyList.get(lazyList.size());
* newElement.put("someProperty", "someValue");
* </code></pre>
*
* <p>Once you've finished you can get back an Array of the
* elements of the appropriate type:</p>
*
* <pre><code>
* // Retrieve the array from the list
* TreeMap[] myArray = (TreeMap[])lazyList.toArray());
* </code></pre>
*
*
* <h3>Example 2</h3>
* <p>Alternatively you can create an <i>empty</i> List and
* specify the Class for List's elements. The LazyDynaList
* uses the Class to automatically populate elements:</p>
*
* <pre><code>
* // e.g. For Maps
* List lazyList = new LazyDynaList(TreeMap.class);
*
* // e.g. For POJO Beans
* List lazyList = new LazyDynaList(MyPojo.class);
*
* // e.g. For DynaBeans
* List lazyList = new LazyDynaList(MyDynaBean.class);
* </code></pre>
*
* <h3>Example 3</h3>
* <p>Alternatively you can create an <i>empty</i> List and specify the
* DynaClass for List's elements. The LazyDynaList uses
* the DynaClass to automatically populate elements:</p>
*
* <pre><code>
* // e.g. For Maps
* DynaClass dynaClass = new LazyDynaMap(new HashMap());
* List lazyList = new LazyDynaList(dynaClass);
*
* // e.g. For POJO Beans
* DynaClass dynaClass = (new WrapDynaBean(myPojo)).getDynaClass();
* List lazyList = new LazyDynaList(dynaClass);
*
* // e.g. For DynaBeans
* DynaClass dynaClass = new BasicDynaClass(properties);
* List lazyList = new LazyDynaList(dynaClass);
* </code></pre>
*
* <p><strong>N.B.</strong> You may wonder why control the type
* using a <code>DynaClass</code> rather than the <code>Class</code>
* as in the previous example - the reason is that some <code>DynaBean</code>
* implementations don't have a <i>default</i> empty constructor and
* therefore need to be instantiated using the <code>DynaClass.newInstance()</code>
* method.</p>
*
* <h3>Example 4</h3>
* <p>A slight variation - set the element type using either
* the <code>setElementType(Class)</code> method or the
* <code>setElementDynaClass(DynaClass)</code> method - then populate
* with the normal <code>java.util.List</code> methods(i.e.
* <code>add()</code>, <code>addAll()</code> or <code>set()</code>).</p>
*
* <pre><code>
* // Create a new LazyDynaList (100 element capacity)
* LazyDynaList lazyList = new LazyDynaList(100);
*
* // Either Set the element type...
* lazyList.setElementType(TreeMap.class);
*
* // ...or the element DynaClass...
* lazyList.setElementDynaClass(new MyCustomDynaClass());
*
* // Populate from a collection
* lazyList.addAll(myCollection);
*
* </code></pre>
*
* @author Niall Pemberton
* @version $Revision: 555824 $ $Date: 2007-07-12 20:27:15 -0400 (Thu, 12 Jul 2007) $
*/
public class LazyDynaList extends ArrayList {
/**
* The DynaClass of the List's elements.
*/
private DynaClass elementDynaClass;
/**
* The WrapDynaClass if the List's contains
* POJO Bean elements.
*
* N.B. WrapDynaClass isn't serlializable, which
* is why its stored separately in a
* transient instance variable.
*/
private transient WrapDynaClass wrapDynaClass;
/**
* The type of the List's elements.
*/
private Class elementType;
/**
* The DynaBean type of the List's elements.
*/
private Class elementDynaBeanType;
// ------------------- Constructors ------------------------------
/**
* Default Constructor.
*/
public LazyDynaList() {
super();
}
/**
* Construct a LazyDynaList with the
* specified capacity.
*
* @param capacity The initial capacity of the list.
*/
public LazyDynaList(int capacity) {
super(capacity);
}
/**
* Construct a LazyDynaList with a
* specified DynaClass for its elements.
*
* @param elementDynaClass The DynaClass of the List's elements.
*/
public LazyDynaList(DynaClass elementDynaClass) {
super();
setElementDynaClass(elementDynaClass);
}
/**
* Construct a LazyDynaList with a
* specified type for its elements.
*
* @param elementType The Type of the List's elements.
*/
public LazyDynaList(Class elementType) {
super();
setElementType(elementType);
}
/**
* Construct a LazyDynaList populated with the
* elements of a Collection.
*
* @param collection The Collection to poulate the List from.
*/
public LazyDynaList(Collection collection) {
super(collection.size());
addAll(collection);
}
/**
* Construct a LazyDynaList populated with the
* elements of an Array.
*
* @param array The Array to poulate the List from.
*/
public LazyDynaList(Object[] array) {
super(array.length);
for (int i = 0; i < array.length; i++) {
add(array[i]);
}
}
// ------------------- java.util.List Methods --------------------
/**
* <p>Insert an element at the specified index position.</p>
*
* <p>If the index position is greater than the current
* size of the List, then the List is automatically
* <i>grown</i> to the appropriate size.</p>
*
* @param index The index position to insert the new element.
* @param element The new element to add.
*/
public void add(int index, Object element) {
DynaBean dynaBean = transform(element);
growList(index);
super.add(index, dynaBean);
}
/**
* <p>Add an element to the List.</p>
*
* @param element The new element to add.
* @return true.
*/
public boolean add(Object element) {
DynaBean dynaBean = transform(element);
return super.add(dynaBean);
}
/**
* <p>Add all the elements from a Collection to the list.
*
* @param collection The Collection of new elements.
* @return true if elements were added.
*/
public boolean addAll(Collection collection) {
if (collection == null || collection.size() == 0) {
return false;
}
ensureCapacity(size() + collection.size());
Iterator iterator = collection.iterator();
while (iterator.hasNext()) {
add(iterator.next());
}
return true;
}
/**
* <p>Insert all the elements from a Collection into the
* list at a specified position.
*
* <p>If the index position is greater than the current
* size of the List, then the List is automatically
* <i>grown</i> to the appropriate size.</p>
*
* @param collection The Collection of new elements.
* @param index The index position to insert the new elements at.
* @return true if elements were added.
*/
public boolean addAll(int index, Collection collection) {
if (collection == null || collection.size() == 0) {
return false;
}
ensureCapacity((index > size() ? index : size()) + collection.size());
// Call "tranform" with first element, before
// List is "grown" to ensure the correct DynaClass
// is set.
if (size() == 0) {
transform(collection.iterator().next());
}
growList(index);
Iterator iterator = collection.iterator();
while (iterator.hasNext()) {
add(index++, iterator.next());
}
return true;
}
/**
* <p>Return the element at the specified position.</p>
*
* <p>If the position requested is greater than the current
* size of the List, then the List is automatically
* <i>grown</i> (and populated) to the appropriate size.</p>
*
* @param index The index position to insert the new elements at.
* @return The element at the specified position.
*/
public Object get(int index) {
growList(index + 1);
return super.get(index);
}
/**
* <p>Set the element at the specified position.</p>
*
* <p>If the position requested is greater than the current
* size of the List, then the List is automatically
* <i>grown</i> (and populated) to the appropriate size.</p>
*
* @param index The index position to insert the new element at.
* @param element The new element.
* @return The new element.
*/
public Object set(int index, Object element) {
DynaBean dynaBean = transform(element);
growList(index + 1);
return super.set(index, dynaBean);
}
/**
* <p>Converts the List to an Array.</p>
*
* <p>The type of Array created depends on the contents
* of the List:</p>
* <ul>
* <li>If the List contains only LazyDynaMap type elements
* then a java.util.Map[] array will be created.</li>
* <li>If the List contains only elements which are
* "wrapped" DynaBeans then an Object[] of the most
* suitable type will be created.</li>
* <li>...otherwise a DynaBean[] will be created.</li>
*
* @return An Array of the elements in this List.
*/
public Object[] toArray() {
if (size() == 0 && elementType == null) {
return new LazyDynaBean[0];
}
Object[] array = (Object[])Array.newInstance(elementType, size());
for (int i = 0; i < size(); i++) {
if (Map.class.isAssignableFrom(elementType)) {
array[i] = ((LazyDynaMap)get(i)).getMap();
} else if (DynaBean.class.isAssignableFrom(elementType)) {
array[i] = (DynaBean)get(i);
} else {
array[i] = ((WrapDynaBean)get(i)).getInstance();
}
}
return array;
}
/**
* <p>Converts the List to an Array of the specified type.</p>
*
* @param model The model for the type of array to return
* @return An Array of the elements in this List.
*/
public Object[] toArray(Object[] model) {
// Allocate the Array
Class arrayType = model.getClass().getComponentType();
Object[] array = (Object[])Array.newInstance(arrayType, size());
if (size() == 0 && elementType == null) {
return new LazyDynaBean[0];
}
if ((DynaBean.class.isAssignableFrom(arrayType))) {
for (int i = 0; i < size(); i++) {
array[i] = get(i);
}
return array;
}
if ((arrayType.isAssignableFrom(elementType))) {
for (int i = 0; i < size(); i++) {
if (Map.class.isAssignableFrom(elementType)) {
array[i] = ((LazyDynaMap)get(i)).getMap();
} else if (DynaBean.class.isAssignableFrom(elementType)) {
array[i] = get(i);
} else {
array[i] = ((WrapDynaBean)get(i)).getInstance();
}
}
return array;
}
throw new IllegalArgumentException("Invalid array type: "
+ arrayType.getName() + " - not compatible with '"
+ elementType.getName());
}
// ------------------- Public Methods ----------------------------
/**
* <p>Converts the List to an DynaBean Array.</p>
*
* @return A DynaBean[] of the elements in this List.
*/
public DynaBean[] toDynaBeanArray() {
if (size() == 0 && elementDynaBeanType == null) {
return new LazyDynaBean[0];
}
DynaBean[] array = (DynaBean[])Array.newInstance(elementDynaBeanType, size());
for (int i = 0; i < size(); i++) {
array[i] = (DynaBean)get(i);
}
return array;
}
/**
* <p>Set the element Type and DynaClass.</p>
*
* @param elementType The type of the elements.
* @exception IllegalArgumentException if the List already
* contains elements or the DynaClass is null.
*/
public void setElementType(Class elementType) {
if (elementType == null) {
throw new IllegalArgumentException("Element Type is missing");
}
if (size() > 0) {
throw new IllegalStateException("Element Type cannot be reset");
}
this.elementType = elementType;
// Create a new object of the specified type
Object object = null;
try {
object = elementType.newInstance();
} catch (Exception e) {
throw new IllegalArgumentException("Error creating type: "
+ elementType.getName() + " - " + e);
}
// Create a DynaBean
DynaBean dynaBean = null;
if (Map.class.isAssignableFrom(elementType)) {
dynaBean = new LazyDynaMap((Map)object);
this.elementDynaClass = dynaBean.getDynaClass();
} else if (DynaBean.class.isAssignableFrom(elementType)) {
dynaBean = (DynaBean)object;
this.elementDynaClass = dynaBean.getDynaClass();
} else {
dynaBean = new WrapDynaBean(object);
this.wrapDynaClass = (WrapDynaClass)dynaBean.getDynaClass();
}
this.elementDynaBeanType = dynaBean.getClass();
// Re-calculate the type
if (WrapDynaBean.class.isAssignableFrom(elementDynaBeanType )) {
this.elementType = ((WrapDynaBean)dynaBean).getInstance().getClass();
} else if (LazyDynaMap.class.isAssignableFrom(elementDynaBeanType )) {
this.elementType = ((LazyDynaMap)dynaBean).getMap().getClass();
}
}
/**
* <p>Set the element Type and DynaClass.</p>
*
* @param elementDynaClass The DynaClass of the elements.
* @exception IllegalArgumentException if the List already
* contains elements or the DynaClass is null.
*/
public void setElementDynaClass(DynaClass elementDynaClass) {
if (elementDynaClass == null) {
throw new IllegalArgumentException("Element DynaClass is missing");
}
if (size() > 0) {
throw new IllegalStateException("Element DynaClass cannot be reset");
}
// Try to create a new instance of the DynaBean
try {
DynaBean dynaBean = elementDynaClass.newInstance();
this.elementDynaBeanType = dynaBean.getClass();
if (WrapDynaBean.class.isAssignableFrom(elementDynaBeanType)) {
this.elementType = ((WrapDynaBean)dynaBean).getInstance().getClass();
this.wrapDynaClass = (WrapDynaClass)elementDynaClass;
} else if (LazyDynaMap.class.isAssignableFrom(elementDynaBeanType)) {
this.elementType = ((LazyDynaMap)dynaBean).getMap().getClass();
this.elementDynaClass = elementDynaClass;
} else {
this.elementType = dynaBean.getClass();
this.elementDynaClass = elementDynaClass;
}
} catch (Exception e) {
throw new IllegalArgumentException(
"Error creating DynaBean from " +
elementDynaClass.getClass().getName() + " - " + e);
}
}
// ------------------- Private Methods ---------------------------
/**
* <p>Automatically <i>grown</i> the List
* to the appropriate size, populating with
* DynaBeans.</p>
*
* @param requiredSize the required size of the List.
*/
private void growList(int requiredSize) {
if (requiredSize < size()) {
return;
}
ensureCapacity(requiredSize + 1);
for (int i = size(); i < requiredSize; i++) {
DynaBean dynaBean = transform(null);
super.add(dynaBean);
}
}
/**
* <p>Transform the element into a DynaBean:</p>
*
* <ul>
* <li>Map elements are turned into LazyDynaMap's.</li>
* <li>POJO Beans are "wrapped" in a WrapDynaBean.</li>
* <li>DynaBeans are unchanged.</li>
* </li>
*
* @param element The element to transformt.
* @param The DynaBean to store in the List.
*/
private DynaBean transform(Object element) {
DynaBean dynaBean = null;
Class newDynaBeanType = null;
Class newElementType = null;
// Create a new element
if (element == null) {
// Default Types to LazyDynaBean
// if not specified
if (elementType == null) {
setElementDynaClass(new LazyDynaClass());
}
// Get DynaClass (restore WrapDynaClass lost in serialization)
DynaClass dynaClass = (elementDynaClass == null) ? wrapDynaClass : elementDynaClass;
if (dynaClass == null) {
setElementType(elementType);
}
// Create a new DynaBean
try {
dynaBean = dynaClass.newInstance();
newDynaBeanType = dynaBean.getClass();
} catch (Exception e) {
throw new IllegalArgumentException("Error creating DynaBean: "
+ dynaClass.getClass().getName()
+ " - " + e);
}
} else {
// Transform Object to a DynaBean
newElementType = element.getClass();
if (Map.class.isAssignableFrom(element.getClass())) {
dynaBean = new LazyDynaMap((Map)element);
} else if (DynaBean.class.isAssignableFrom(element.getClass())) {
dynaBean = (DynaBean)element;
} else {
dynaBean = new WrapDynaBean(element);
}
newDynaBeanType = dynaBean.getClass();
}
// Re-calculate the element type
newElementType = dynaBean.getClass();
if (WrapDynaBean.class.isAssignableFrom(newDynaBeanType)) {
newElementType = ((WrapDynaBean)dynaBean).getInstance().getClass();
} else if (LazyDynaMap.class.isAssignableFrom(newDynaBeanType)) {
newElementType = ((LazyDynaMap)dynaBean).getMap().getClass();
}
// Check the new element type, matches all the
// other elements in the List
if (newElementType != elementType) {
throw new IllegalArgumentException("Element Type " + newElementType
+ " doesn't match other elements " + elementType);
}
return dynaBean;
}
}
The table below shows all metrics for LazyDynaList.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 70.00 | Number of blocks | |
| BLOCK_COMMENT | 16.00 | Number of block comment lines | |
| COMMENTS | 338.00 | Comment lines | |
| COMMENT_DENSITY | 1.77 | Comment density | |
| COMPARISONS | 55.00 | Number of comparison operators | |
| CYCLOMATIC | 68.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 29.00 | Comments in declarations | |
| DOC_COMMENT | 301.00 | Number of javadoc comment lines | |
| ELOC | 191.00 | Effective lines of code | |
| EXEC_COMMENTS | 13.00 | Comments in executable code | |
| EXITS | 42.00 | Procedure exits | |
| FUNCTIONS | 19.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 77.51 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 54.00 | 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 | 0.00 | 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 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | 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 | 0.00 | 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 | 0.00 | 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 | 3.00 | 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 | 0.00 | 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 | 0.00 | 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 | 0.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 1.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 1.00 | 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 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | 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 | 0.00 | 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 | 0.00 | 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 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 0.00 | 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 | 3.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 0.00 | 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 | 1.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 0.00 | 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 | 1.00 | 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 | 2.00 | 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 | 1.00 | 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 | 2.00 | 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 | 686.00 | Number of lines in the source file | |
| LINE_COMMENT | 21.00 | Number of line comments | |
| LOC | 246.00 | Lines of code | |
| LOGICAL_LINES | 124.00 | Number of statements | |
| LOOPS | 8.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 532.00 | Number of operands | |
| OPERATORS | 1257.00 | Number of operators | |
| PARAMS | 19.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1789.00 | Halstead program length | |
| PROGRAM_VOCAB | 195.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 35.00 | Number of return points from functions | |
| SIZE | 22240.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 151.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 44.00 | Number of unique operators | |
| WHITESPACE | 102.00 | Number of whitespace lines | |