AbstractPreferences.java
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|---|---|---|
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org.xnap.util |
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XNap 3 |
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 | |
|---|---|---|
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' |  |
| JAVA0143 | JAVA0143 Synchronized method | |
| DECL_COMMENTS | Comments in declarations | |
| PARAMS | Number of formal parameter declarations | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| EXITS | Procedure exits | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| FUNCTIONS | Number of function declarations | |
| BLOCKS | Number of blocks | |
| JAVA0008 | JAVA0008 Empty catch block | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| CYCLOMATIC | Cyclomatic complexity | |
| LINES | Number of lines in the source file | |
| JAVA0076 | JAVA0076 Use of magic number | |
| DOC_COMMENT | Number of javadoc comment lines | |
| LOC | Lines of code | |
| JAVA0242 | JAVA0242 Transient field in non-Serializable class | |
| RETURNS | Number of return points from functions | |
| JAVA0278 | JAVA0278 Unnecessary use of Boolean constructor | |
| COMMENTS | Comment lines | |
| OPERANDS | Number of operands | |
| PROGRAM_LENGTH | Halstead program length | |
| OPERATORS | Number of operators | |
| SIZE | Size of the file in bytes | |
| UNIQUE_OPERATORS | Number of unique operators | |
| ELOC | Effective lines of code | |
| JAVA0166 | JAVA0166 Generic exception caught | |
| LINE_COMMENT | Number of line comments | |
| PROGRAM_VOLUME | Halstead program volume | |
| LOGICAL_LINES | Number of statements | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| LOOPS | Number of loops | |
| JAVA0075 | JAVA0075 Method parameter hides field | |
/*
* XNap - A P2P framework and client.
*
* See the file AUTHORS for copyright information.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.xnap.util;
import java.awt.Color;
import java.awt.Font;
import java.awt.event.KeyEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Hashtable;
import java.util.Properties;
import java.util.StringTokenizer;
import javax.swing.KeyStroke;
import org.apache.log4j.Logger;
import org.xnap.util.prefs.Validator;
/**
* This class provides a default implementation for a preferences framework.
* Methods are provided that can read and write native types, arrays and a few
* custom types.
*/
public abstract class AbstractPreferences {
//--- Constant(s) ---
public static final String ARRAY_SEPARATOR = ";";
//--- Data field(s) ---
protected static Logger logger = Logger.getLogger(AbstractPreferences.class);
protected transient PropertyChangeSupport propertyChange
= new PropertyChangeSupport(this);
/**
* Determines if preferences need to be saved.
*/
protected boolean changedFlag = false;
/**
* Preferences database.
*/
protected File prefsFile;
/**
* Version of database format.
*/
protected int version;
/**
* Version of database when read.
*/
protected int oldVersion = -1;
/**
* The namespace is prefixed to each key.
*/
protected String namespace;
/**
* Preferences.
*/
protected Properties props = new Properties();
/**
* Maps keys to validators. Validators are used to validate input of
* set methods.
*/
private Hashtable validatorsByKey = new Hashtable();
//--- Constructor(s) ---
/**
* Constructs a <code>PreferencesSupport</code> object.
*
* @param filename the filename of the preferences file
* @param version the current version of the preferences, this version
* can be more recent than the version of the file
* @param namespace the namespace, used as a prefix for all keys
*/
public AbstractPreferences(String filename, int version, String namespace)
{
this.prefsFile = new File(filename);
this.version = version;
if (!namespace.endsWith(".")) {
namespace += ".";
}
this.namespace = namespace;
}
//--- Method(s) ---
/**
* Returns the absolute path of the preferences file.
*/
public String getFilename()
{
return prefsFile.getAbsolutePath();
}
/**
* Reads preferences from <code>f</code>.
*/
public void read(File f)
{
logger.info("reading " + f);
FileInputStream in = null;
try {
in = new FileInputStream(f);
props.load(in);
try {
oldVersion = Integer.parseInt
(props.getProperty("props.ver", "-1"));
}
catch (NumberFormatException e) {
oldVersion = -1;
}
if (oldVersion != -1 && oldVersion < getVersion()) {
logger.debug("converting from version " + oldVersion + " to "
+ getVersion());
convert(oldVersion);
}
}
catch (FileNotFoundException e) {
}
catch (IOException e) {
}
finally {
try {
if (in != null) {
in.close();
}
}
catch (Exception e) {
}
}
}
/**
* Reads preferences from default preferences file.
*/
public void read()
{
read(prefsFile);
}
/**
* Writes preferences to default preferences file. If preferences have not
* changed since the last read or write operation, no action is taken.
*
* @return true, if file is written successfully or preferences were not
* changed; false, if an <code>IOException</code> has occured
*/
public boolean write()
{
if (!changedFlag) {
logger.info("nothing changed, not writing " + prefsFile);
return true;
}
logger.info("writing " + prefsFile);
FileOutputStream out = null;
try {
out = new FileOutputStream(prefsFile);
props.put("props.ver", version + "");
props.store(out, "This file was automatically generated.");
}
catch (IOException e) {
return false;
}
finally {
try {
if (out != null) {
out.close();
}
}
catch (Exception e) {
}
}
changedFlag = false;
return true;
}
/**
* Returns the version of the preferences in the file at the point
* of the last read operation.
*/
public int getOldVersion()
{
return oldVersion;
}
/**
* Returns the current version of the preferences.
*/
public int getVersion()
{
return version;
}
/**
* Invoked by {@link #read()} to converts preferences from
* <code>oldVersion</code> to current version.
*/
public abstract void convert(int oldVersion);
/**
* Adds a preferences listener.
*/
public synchronized
void addPropertyChangeListener(PropertyChangeListener l)
{
propertyChange.addPropertyChangeListener(l);
}
/**
* Adds a preferences listener for a specific key.
*/
public synchronized
void addPropertyChangeListener(String key, PropertyChangeListener l)
{
propertyChange.addPropertyChangeListener(key, l);
}
/**
* Fires PropertyChangeEvent without namespace.
*/
public void firePropertyChange(String key, Object oldValue,
Object newValue) {
// if (key.startsWith(namespace)) {
// key = key.substring(namespace.length() + 1);
// }
int i = key.lastIndexOf(".");
if (key.length() > i + 1) {
key = key.substring(i + 1);
}
propertyChange.firePropertyChange(key, oldValue, newValue);
}
/**
* Removes a preferences listener.
*/
public synchronized
void removePropertyChangeListener(PropertyChangeListener l) {
propertyChange.removePropertyChangeListener(l);
}
public synchronized void removePropertyChangeListener
(String key, PropertyChangeListener l) {
propertyChange.removePropertyChangeListener(key, l);
}
public String get(String key)
{
return getProperty(key, "");
}
public String[] getArray(String key)
{
return StringHelper.toArray(getProperty(key, ""), ARRAY_SEPARATOR);
}
public boolean getBoolean(String key)
{
String val = getProperty(key, "false");
return val.equalsIgnoreCase("true");
}
public Color getColor(String key)
{
int val = getInt(key);
return new Color(val & 0xFF, (val >> 8) & 0xFF, (val >> 16) & 0xFF);
}
/**
* Always returns a valid font.
*/
public Font getFont(String key)
{
String val = getProperty(key, "");
StringTokenizer t = new StringTokenizer(val, ARRAY_SEPARATOR);
if (t.countTokens() >= 3) {
try {
String name = t.nextToken();
int style = Integer.parseInt(t.nextToken());
int size = Integer.parseInt(t.nextToken());
return new Font(name, style, size);
}
catch (NumberFormatException e) {
}
}
return new Font("Monospaced", 0, 12);
}
/**
* Reads a keystroke from the properties.
*
* @return null, if key was not found or value is invalid
*/
public KeyStroke getKeyStroke(String key)
{
String val = getProperty(key, "");
// this would be way easier but there seems to be no serialize
// method that can create the format recognized by getKeyStroke()
//return KeyStroke.getKeyStroke(key);
StringTokenizer t = new StringTokenizer(val, ARRAY_SEPARATOR);
if (t.countTokens() >= 3) {
try {
int keyCode = Integer.parseInt(t.nextToken());
int modifiers = Integer.parseInt(t.nextToken());
Character character = new Character(t.nextToken().charAt(0));
return (keyCode == KeyEvent.VK_UNDEFINED)
? KeyStroke.getKeyStroke(character, modifiers)
: KeyStroke.getKeyStroke(keyCode, modifiers);
}
catch (NumberFormatException e) {
}
}
return null;
}
/**
* Reads an integer from the properties.
*
* @return 0, if conversion fails; the value, otherwise
*/
public int getInt(String key)
{
try {
return Integer.parseInt(getProperty(key, "0"));
}
catch (NumberFormatException e) {
return 0;
}
}
public int[] getIntArray(String key)
{
return StringHelper.toIntArray(getProperty(key, ""), ARRAY_SEPARATOR);
}
public long getLong(String key)
{
try {
return Long.parseLong(getProperty(key, "0"));
}
catch (NumberFormatException e) {
return 0;
}
}
public void set(String key, String newValue)
{
String oldValue = get(key);
if (!areObjectsEqual(newValue, oldValue)) {
setProperty(key, newValue);
firePropertyChange(key, oldValue, newValue);
}
}
public void set(String key, String[] newValue)
{
String[] oldValue = getArray(key);
if (!Arrays.equals(newValue, oldValue)) {
setProperty(key, StringHelper.toString(newValue, ARRAY_SEPARATOR));
firePropertyChange(key, oldValue, newValue);
}
}
public void set(String key, boolean newValue)
{
boolean oldValue = getBoolean(key);
if (newValue != oldValue) {
setProperty(key, newValue + "");
firePropertyChange(key, new Boolean(oldValue),
new Boolean(newValue));
}
}
public void set(String key, Color newValue)
{
Color oldValue = getColor(key);
if (!newValue.equals(oldValue)) {
// encode color
int c = newValue.getRed()
| newValue.getGreen() << 8
| newValue.getBlue() << 16;
setProperty(key, c + "");
firePropertyChange(key, oldValue, newValue);
}
}
/**
* Saves a font.
*/
public void set(String key, Font newValue)
{
Font oldValue = getFont(key);
if (!newValue.equals(oldValue)) {
setProperty(key, toString(newValue));
firePropertyChange(key, oldValue, newValue);
}
}
public void set(String key, int newValue)
{
int oldValue = getInt(key);
if (newValue != oldValue) {
setProperty(key, newValue + "");
firePropertyChange(key, new Integer(oldValue),
new Integer(newValue));
}
}
public void set(String key, int[] newValue)
{
int[] oldValue = getIntArray(key);
if (!Arrays.equals(newValue, oldValue)) {
setProperty(key, StringHelper.toString(newValue, ARRAY_SEPARATOR));
firePropertyChange(key, oldValue, newValue);
}
}
public void set(String key, KeyStroke newValue)
{
KeyStroke oldValue = getKeyStroke(key);
// we can use the != operator since KeyStroke objects are unique
if (newValue != oldValue) {
setProperty(key, toString(newValue));
firePropertyChange(key, oldValue, newValue);
}
}
public void set(String key, long newValue)
{
long oldValue = getLong(key);
if (newValue != oldValue) {
setProperty(key, newValue + "");
firePropertyChange(key, new Long(oldValue),
new Long(newValue));
}
}
/**
* Sets a default property. If key already exists the value is not
* overwritten.
*
* <p>If a key already exists, the corresponding value is validated
* by <code>validator</code> and will replaced by <code>value</code>
* if the validation fails.
*
* @param key the key
* @param value the default value
* @param validator a validator that is invoked each time a value is set
*/
public synchronized void setDefault(String key, String value,
Validator validator)
{
if (validator != null) {
validatorsByKey.put(namespace + key, validator);
}
if (getProperty(key, null) == null) {
// property not set, use default value
setProperty(key, value, false);
}
else if (validator != null) {
try {
// validate already set value
validator.validate(getProperty(key, ""));
}
catch (IllegalArgumentException e) {
// set value is not valid, use default
logger.debug("invalid value: " + namespace + key + " = "
+ getProperty(key, "") + " [" + value + "]", e);
setProperty(key, value, false);
}
}
// else: value is already set and needs no validation
}
/**
* Sets a default property. If key already exists the value is not
* overwritten.
*
* @param key the key
* @param value the default value
*/
public void setDefault(String key, String value)
{
setDefault(key, value, null);
}
/**
* Ignores namespace.
*/
public synchronized void removeProperty(String key)
{
props.remove(key);
changedFlag = true;
}
/**
* Renames a property, used for conversion of property file formats.
* Ignores namespace. Does not fire change event.
*/
public synchronized void renameProperty(String oldKey, String newKey)
{
String value = props.getProperty(oldKey, null);
if (value != null) {
Object oldValue = props.remove(oldKey);
if (oldValue != null) {
props.setProperty(newKey, value);
changedFlag = true;
}
}
}
/**
* Returns a property.
*/
protected synchronized String getProperty(String key, String defaultValue)
{
String s = props.getProperty(namespace + key, defaultValue);
return s;
}
/**
* Sets a property. <code>newValue</code> is validated if
* <code>validate</code> is set to true and a validator has been
* provided.
*
* @exception IllegalArgumentException if <code>newValue</code> is not valid
* @param key the key to set
* @param newValue the value to set
* @param validate if true, <code>newValue</code> will be validated
*/
protected synchronized void setProperty(String key, String newValue,
boolean validate)
{
if (validate) {
Validator v = (Validator)validatorsByKey.get(namespace + key);
if (v != null) {
v.validate(newValue);
}
}
props.setProperty(namespace + key, newValue);
changedFlag = true;
}
/**
* Sets a property. <code>newValue</code> is validated if a validator has
* been provided.
*
* @param key the key to set
* @param newValue the value to set
* @see #setProperty(String, String, boolean)
*/
protected void setProperty(String key, String newValue)
{
setProperty(key, newValue, true);
}
/**
* Determine if 2 objects are equal, or both point to null.
*/
public static boolean areObjectsEqual(Object obj1, Object obj2)
{
return (obj1 != null) ? obj1.equals(obj2) : (obj1 == obj2);
}
/**
* Determine if 2 arrays are equal, or both point to null.
*/
public static boolean areObjectsEqual(Object[] obj1, Object[] obj2)
{
return (obj1 != null) ? obj2 == null : Arrays.equals(obj1, obj2);
}
public static String toString(Font font)
{
// encode font
StringBuffer sb = new StringBuffer();
sb.append(font.getName());
sb.append(ARRAY_SEPARATOR);
sb.append(font.getStyle());
sb.append(ARRAY_SEPARATOR);
sb.append(font.getSize());
return sb.toString();
}
public static String toString(KeyStroke keystroke)
{
if (keystroke == null) {
return "";
}
// encode keystroke
StringBuffer sb = new StringBuffer();
sb.append(keystroke.getKeyCode());
sb.append(ARRAY_SEPARATOR);
sb.append(keystroke.getModifiers());
sb.append(ARRAY_SEPARATOR);
sb.append(keystroke.getKeyChar());
return sb.toString();
}
}
The table below shows all metrics for AbstractPreferences.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 89.00 | Number of blocks | |
| BLOCK_COMMENT | 18.00 | Number of block comment lines | |
| COMMENTS | 179.00 | Comment lines | |
| COMMENT_DENSITY | 0.69 | Comment density | |
| COMPARISONS | 38.00 | Number of comparison operators | |
| CYCLOMATIC | 81.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 38.00 | Comments in declarations | |
| DOC_COMMENT | 143.00 | Number of javadoc comment lines | |
| ELOC | 261.00 | Effective lines of code | |
| EXEC_COMMENTS | 10.00 | Comments in executable code | |
| EXITS | 76.00 | Procedure exits | |
| FUNCTIONS | 42.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 0.53 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 110.00 | 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 | 0.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 6.00 | 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 | 1.00 | JAVA0016 Abstract class contains non-protected 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 | 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 | 1.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 8.00 | 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 | 1.00 | 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 | 23.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 7.00 | 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 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 1.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 17.00 | 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 | 1.00 | 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 | 9.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 675.00 | 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 | 2.00 | 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 | 0.00 | 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 | 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 | 1.00 | 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 | 0.00 | 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 | 2.00 | 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 | |
| JAVA0289 | 1.00 | null | |
| LINES | 653.00 | Number of lines in the source file | |
| LINE_COMMENT | 18.00 | Number of line comments | |
| LOC | 389.00 | Lines of code | |
| LOGICAL_LINES | 153.00 | Number of statements | |
| LOOPS | 0.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 803.00 | Number of operands | |
| OPERATORS | 1448.00 | Number of operators | |
| PARAMS | 62.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 2251.00 | Halstead program length | |
| PROGRAM_VOCAB | 334.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 48.00 | Number of return points from functions | |
| SIZE | 16225.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 282.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 52.00 | Number of unique operators | |
| WHITESPACE | 85.00 | Number of whitespace lines | |