Library.java
| Index Score | ||
|---|---|---|
 |
 |
org.xnap.io |
 |
 |
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 | |
| EXITS | Procedure exits | |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0123 | JAVA0123 Use all three components of for loop | |
| LOOPS | Number of loops | |
| BLOCKS | Number of blocks | |
| CYCLOMATIC | Cyclomatic complexity | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0254 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| COMPARISONS | Number of comparison operators | |
| LOC | Lines of code | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| UNIQUE_OPERANDS | Number of unique operands | |
| OPERATORS | Number of operators | |
| LINES | Number of lines in the source file | |
| LOGICAL_LINES | Number of statements | |
| PROGRAM_LENGTH | Halstead program length | |
| FUNCTIONS | Number of function declarations | |
| JAVA0075 | JAVA0075 Method parameter hides field | |
| ELOC | Effective lines of code | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0008 | JAVA0008 Empty catch block | |
| OPERANDS | Number of operands | |
| JAVA0082 | JAVA0082 Unnecessary widening cast | |
| JAVA0128 | JAVA0128 Public constructor in non-public class | |
| NEST_DEPTH | Maximum nesting depth | |
| RETURNS | Number of return points from functions | |
| PROGRAM_VOLUME | Halstead program volume | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0288 | JAVA0288 Inconsistent null check | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0007 | JAVA0007 Should not declare public field | |
| JAVA0067 | JAVA0067 Array descriptor on identifier name | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
/*
* 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.io;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Vector;
import org.apache.log4j.Logger;
import org.xnap.XNap;
import org.xnap.event.ListListener;
import org.xnap.event.ListSupport;
import org.xnap.event.StatusListener;
import org.xnap.util.FileHelper;
import org.xnap.util.Preferences;
import org.xnap.util.SearchTree;
public class Library implements PropertyChangeListener {
//--- Constant(s) ---
/**
* The name of the file where the library is stored.
*/
public static String FILENAME = FileHelper.getHomeDir() + "library";
/**
* The current version of the library.
*/
public static int VERSION = 1;
// --- Data Field(s) ---
private static Logger logger = Logger.getLogger(Library.class);
private static Library singleton = new Library();
private Preferences prefs = Preferences.getInstance();
/**
* Maps absolute filename to repository index.
*/
private Hashtable indexByFile = new Hashtable();
/**
* Contains all files that have been deleted from disk.
*/
private HashSet deletedFiles;
private int totalCount = 0;
private int sharedCount = 0;
private Thread runner;
private Object updateLock = new Object();
private boolean updatePending = false;
private boolean updateRunning = false;
private ArrayList files = new ArrayList();
private SearchTree st = new SearchTree();
private Vector miProviders = new Vector();
private StatusListener listener;
private ListSupport listeners = new ListSupport(this);
private boolean isRead = false;
// --- Constructor(s) ---
public Library()
{
prefs.addPropertyChangeListener("libraryDirs", this);
prefs.addPropertyChangeListener("uploadDirs", this);
updateLater(true);
}
// --- Method(s) ---
public static Library getInstance()
{
return singleton;
}
/**
* <code>Listener</code> is notified when a new file is
* added.
*/
public void addListListener(ListListener listener)
{
listeners.addListListener(listener);
}
/**
* <code>Provider</code> is notified when a file is added or not uptodate.
*/
public void addMetaInfoProvider(MetaInfoProvider provider)
{
miProviders.add(provider);
}
/**
* Returns a file by index. It is save to call this function with
* index <= size() because the library never shrinks.
*
* @return null, if the file was removed from library; the file
* located at index, otherwise */
public synchronized MetaInfoFile get(int index)
{
return (MetaInfoFile)files.get(index);
}
/**
* Returns a MetaInfoFile object if file is part of library.
*
* @return null, if the file is not part of library; the file,
* otherwise
*/
public synchronized MetaInfoFile get(File file)
{
int i = indexOf(file);
return (i != -1) ? get(i) : null;
}
/**
* Returns file at <code>index</code> and compares it to the given
* filename. If filenames match returns the file.
*
* @return null, if file was not found; the file, otherwise */
public synchronized MetaInfoFile get(String filename, int index)
{
if (index >= 0 && index < files.size()) {
MetaInfoFile file = (MetaInfoFile)get(index);
if (file != null && file.getName().equals(filename)) {
return file;
}
}
return null;
}
public synchronized int indexOf(File file)
{
Integer i = (Integer)indexByFile.get(file);
return (i != null) ? i.intValue() : -1;
}
/**
* Returns true, if file is part of repository and shared. */
public synchronized boolean isShared(File file)
{
int index = indexOf(file);
return (index != -1) ? ((MetaInfoFile)get(index)).isShared() : false;
}
public boolean isRead()
{
return isRead;
}
/**
* Returns false, if <code>file</code> is the incomplete folder
* or its name starts with a dot.
*/
public boolean isPartOfRepository(File file)
{
if (file.getName().startsWith(".")) {
return false;
}
else if (file.isDirectory()) {
return !file.equals(new File(prefs.getIncompleteDir()));
}
return true;
}
public boolean isUpdateRunning()
{
synchronized (updateLock) {
return updateRunning;
}
}
public void propertyChange(PropertyChangeEvent e)
{
updateLater();
}
/**
* Removes <code>listener</code>.
*/
public void removeListListener(ListListener listener)
{
listeners.removeListListener(listener);
}
/**
* Removes <code>provider</code>.
*/
public void removeMetaInfoProvider(MetaInfoProvider provider)
{
miProviders.remove(provider);
}
/**
* @return always returns a valid array
*/
public MetaInfoFile[] search(String searchText)
{
if (st == null) {
return new MetaInfoFile[0];
}
HashSet results = st.search(searchText);
return (results != null)
? (MetaInfoFile[])results.toArray(new MetaInfoFile[0])
: null;
}
public File[] search(String searchText, long filesize)
{
if (st == null) {
return new File[0];
}
HashSet results = st.search(searchText);
if (results != null) {
for (Iterator i = results.iterator(); i.hasNext();) {
if (((File)i.next()).length() != filesize) {
i.remove();
}
}
return (File[])results.toArray(new File[0]);
}
return null;
}
public synchronized int size()
{
return files.size();
}
/**
* Updates the repository.
*/
public void updateLater()
{
updateLater(false);
}
public synchronized void setStatusListener(StatusListener newValue)
{
listener = newValue;
updateStatus();
}
public synchronized void updateStatus()
{
if (listener != null) {
listener.setStatus(XNap.tr("{0} of {1} {2}",
new Integer(sharedCount),
new Integer(totalCount),
(isUpdateRunning())
? XNap.tr("updating")
: XNap.tr("shared")));
}
}
/**
* Optionaly reads the repository and then always updates the repository.
*/
private void updateLater(boolean read)
{
updatePending = true;
synchronized (updateLock) {
if (updateRunning) {
return;
}
updateRunning = true;
}
runner = new Thread(new UpdateRunner(read), "UpdateRepository");
runner.start();
}
private void read()
{
logger.debug("reading library from " + FILENAME);
ObjectInputStream in = null;
try {
in = new ObjectInputStream(new FileInputStream(FILENAME));
int v = in.readInt();
logger.debug("current version: " + VERSION
+ ", repository version: " + v);
if (v < VERSION) {
logger.debug("discarding old repository");
return;
}
int size = in.readInt();
if (size >= 0) {
logger.debug("allocating " + size + " items");
files.ensureCapacity(size);
for (int i = 0; i < size; i++) {
try {
Object o = in.readObject();
if (o != null && o instanceof MetaInfoFile) {
MetaInfoFile file = (MetaInfoFile)o;
addFile(file, file.isShared());
}
}
catch (IOException e) {
throw(e);
}
catch (Exception e) {
logger.error("error reading library at item "
+ i + "/" + size, e);
}
}
}
}
catch(IOException e) {
logger.debug("error reading library file", e);
logger.info(XNap.tr("Could not read library file {0}.", FILENAME));
}
finally {
if (in != null) {
try {
in.close();
}
catch(IOException e) {
}
}
}
}
/**
* Writes repository contents to disk.
*/
private void write()
{
logger.debug("writing library to " + FILENAME);
ObjectOutputStream out = null;
try {
out = new ObjectOutputStream(new FileOutputStream(FILENAME));
out.writeInt(VERSION);
out.writeInt(totalCount);
for (Iterator i = files.iterator(); i.hasNext();) {
Object o = i.next();
if (o != null) {
out.writeObject(o);
}
}
}
catch(IOException e) {
logger.debug("error writing library file", e);
logger.info(XNap.tr("Could not write library file {0}.", FILENAME));
}
finally {
if (out != null) {
try {
out.close();
}
catch(IOException e) {
}
}
}
}
/**
* Adds new files, removes old files and writes the repository to disk.
*/
private void update()
{
logger.debug("updating library");
deletedFiles = new HashSet();
// mark all files for deletion
for (Iterator i = files.iterator(); i.hasNext();) {
File f = (File)i.next();
if (f != null) {
deletedFiles.add(f);
}
}
String[] sharedDirs = prefs.getUploadDirs();
HashSet sharedDirsSet = new HashSet(Arrays.asList(sharedDirs));
// add library dirs that are not shared
String[] dirs = prefs.getLibraryDirs();
for (int i = 0; i < dirs.length; i++) {
addDirectory(new File(dirs[i]), false, sharedDirsSet);
}
// add shared files (updates shared flag if already in library)
for (int i = 0; i < sharedDirs.length; i++) {
addDirectory(new File(sharedDirs[i]), true, null);
}
for (Iterator i = deletedFiles.iterator(); i.hasNext();) {
removeFile((MetaInfoFile)i.next());
}
deletedFiles = null;
write();
}
/**
* Adds <code>file</code> recursively.
*
* <p>Only invoked from {@link #update()}.
*/
private void addDirectory(File file, boolean shared,
HashSet excludeDirs)
{
if ((excludeDirs != null
&& excludeDirs.contains(file.getAbsolutePath()))
|| !isPartOfRepository(file)) {
return;
}
if (file.isDirectory()) {
File list[] = file.listFiles();
if (list != null) {
for (int i = 0; i < list.length; i++) {
addDirectory(list[i], shared, excludeDirs);
}
}
}
else if (file.isFile() && file.canRead()) {
addFile(file, shared);
}
}
/**
* <p>Only invoked from {@link #addDirectory(File, boolean, HashSet)}.
*/
private void addFile(File file, boolean shared)
{
int index = indexOf(file);
if (index == -1) {
if (!(file instanceof MetaInfoFile)) {
file = new MetaInfoFile(file);
}
// update
updateFile((MetaInfoFile)file, shared);
// add new file
files.add(file);
indexByFile.put(file, new Integer(files.size() - 1));
totalCount++;
if (shared) {
sharedCount++;
}
listeners.fireItemAdded(file);
if (totalCount % 16 == 0) {
updateStatus();
}
if (st != null) {
st.add(file.getAbsolutePath(), file);
}
}
else {
// update
updateFile(get(index), shared);
}
}
/**
* Adds file if not already present.
*
* <p>Only invoked from {@link #addFile(File,boolean)}.
*/
private void updateFile(MetaInfoFile file, boolean shared)
{
if (deletedFiles != null) {
deletedFiles.remove(file);
}
file.setShared(shared);
if (!file.isUpToDate()) {
Object[] l = miProviders.toArray();
if (l != null) {
for (int i = l.length - 1; i >= 0; i--) {
synchronized (file) {
((MetaInfoProvider)l[i]).handle(file);
}
}
}
file.setLastUpdate(System.currentTimeMillis());
}
}
/**
* <p>Only invoked from {@link #update()}.
*/
private void removeFile(MetaInfoFile file)
{
int index = indexOf(file);
logger.debug("removed (" + index + ") " + file);
// don't acctually remove file to not mess up indicies
files.set(index, null);
indexByFile.remove(file);
if (file.isShared()) {
sharedCount--;
}
// FIX: remove file from search tree here
totalCount--;
if (totalCount % 16 == 0) {
updateStatus();
}
listeners.fireItemRemoved(file);
}
//--- Inner Class(es) ---
private class UpdateRunner implements Runnable
{
boolean read;
public UpdateRunner(boolean read)
{
this.read = read;
}
public void run()
{
updateStatus();
if (read) {
read();
isRead = true;
}
Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
while (updatePending) {
updatePending = false;
update();
}
synchronized (updateLock) {
updateRunning = false;
}
updateStatus();
}
}
}
The table below shows all metrics for Library.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 91.00 | Number of blocks | |
| BLOCK_COMMENT | 18.00 | Number of block comment lines | |
| COMMENTS | 110.00 | Comment lines | |
| COMMENT_DENSITY | 0.41 | Comment density | |
| COMPARISONS | 54.00 | Number of comparison operators | |
| CYCLOMATIC | 90.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 28.00 | Comments in declarations | |
| DOC_COMMENT | 79.00 | Number of javadoc comment lines | |
| ELOC | 267.00 | Effective lines of code | |
| EXEC_COMMENTS | 8.00 | Comments in executable code | |
| EXITS | 84.00 | Procedure exits | |
| FUNCTIONS | 31.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 0.54 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 66.00 | 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 | 2.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 2.00 | 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 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 | 1.00 | 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 | 1.00 | 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 | 1.00 | 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 | 2.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 2.00 | 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 | 2.00 | 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 | 20.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 2.00 | 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 | 10.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 1.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 0.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 4.00 | 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 | 1.00 | 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 | 8.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 861.00 | 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 | 1.00 | 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 | 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 | 3.00 | 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 | 3.00 | 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 | 1.00 | JAVA0288 Inconsistent null check | |
| JAVA0289 | 2.00 | null | |
| LINES | 599.00 | Number of lines in the source file | |
| LINE_COMMENT | 13.00 | Number of line comments | |
| LOC | 392.00 | Lines of code | |
| LOGICAL_LINES | 180.00 | Number of statements | |
| LOOPS | 10.00 | Number of loops | |
| NEST_DEPTH | 6.00 | Maximum nesting depth | |
| OPERANDS | 718.00 | Number of operands | |
| OPERATORS | 1537.00 | Number of operators | |
| PARAMS | 26.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 2255.00 | Halstead program length | |
| PROGRAM_VOCAB | 312.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 40.00 | Number of return points from functions | |
| SIZE | 13347.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 261.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 51.00 | Number of unique operators | |
| WHITESPACE | 97.00 | Number of whitespace lines | |