PluginLoader.java
| Index Score | ||
|---|---|---|
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tvbrowser.core |
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TV-Browser |
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 | |
|---|---|---|
| EXEC_COMMENTS | Comments in executable code |  |
| EXITS | Procedure exits | |
| JAVA0166 | JAVA0166 Generic exception caught | |
| BLOCKS | Number of blocks | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_LENGTH | Halstead program length | |
| OPERATORS | Number of operators | |
| OPERANDS | Number of operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| LOGICAL_LINES | Number of statements | |
| SIZE | Size of the file in bytes | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| COMPARISONS | Number of comparison operators | |
| ELOC | Effective lines of code | |
| CYCLOMATIC | Cyclomatic complexity | |
| JAVA0170 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| LOC | Lines of code | |
| JAVA0049 | JAVA0049 Nested block at depth N (maximum: M) | |
| LINE_COMMENT | Number of line comments | |
| JAVA0008 | JAVA0008 Empty catch block | |
| JAVA0130 | JAVA0130 Non-static method does not use instance fields | |
| LINES | Number of lines in the source file | |
| JAVA0265 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| NEST_DEPTH | Maximum nesting depth | |
| PROGRAM_VOLUME | Halstead program volume | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0171 | JAVA0171 Unused local variable | |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| LOOPS | Number of loops | |
| RETURNS | Number of return points from functions | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/*
* TV-Browser
* Copyright (C) 04-2003 Martin Oberhauser (martin@tvbrowser.org)
*
* 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; either version 2
* of the License, or (at your option) any later version.
*
* 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.
*
* CVS information:
* $RCSfile$
* $Source$
* $Date: 2008-03-16 05:17:04 -0400 (Sun, 16 Mar 2008) $
* $Author: Bananeweizen $
* $Revision: 4403 $
*/
package tvbrowser.core;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import tvbrowser.core.plugin.AbstractPluginProxy;
import tvbrowser.core.plugin.BeanShellPluginProxy;
import tvbrowser.core.plugin.JavaPluginProxy;
import tvbrowser.core.plugin.PluginProxy;
import tvbrowser.core.plugin.PluginProxyManager;
import tvbrowser.core.tvdataservice.DefaultTvDataServiceProxy;
import tvbrowser.core.tvdataservice.DeprecatedTvDataServiceProxy;
import tvbrowser.core.tvdataservice.TvDataServiceProxy;
import tvbrowser.core.tvdataservice.TvDataServiceProxyManager;
import tvdataservice.TvDataService;
import util.exc.ErrorHandler;
import util.exc.TvBrowserException;
import util.io.IOUtilities;
import devplugin.Plugin;
import devplugin.PluginInfo;
import devplugin.Version;
/**
* The PluginLoader loads all plugins and assigns each plugin to
* the appropriate manager (TvDataServiceProxyManager or PluginProxyManager)
*/
public class PluginLoader {
/** The logger for this class */
private static java.util.logging.Logger mLog
= Logger.getLogger(PluginLoader.class.getName());
/** The localizer for this class. */
public static final util.ui.Localizer mLocalizer
= util.ui.Localizer.getLocalizerFor(PluginLoader.class);
private static PluginLoader mInstance;
/** The name of the directory where the plugins are located in TV-Browser 2.1 and later */
private static String PLUGIN_DIRECTORY = "plugins";
private HashSet<String> mSuccessfullyLoadedPluginFiles;
private HashMap<Object, File> mDeleteablePlugin;
private ArrayList<PluginProxy> loadedProxies;
private PluginLoader() {
mSuccessfullyLoadedPluginFiles = new HashSet<String>();
mDeleteablePlugin = new HashMap<Object, File>();
}
public static PluginLoader getInstance() {
if (mInstance == null) {
mInstance = new PluginLoader();
}
return mInstance;
}
/**
* Installs all plugins that could not be installed the last time, because an
* old version was in use.
*/
public void installPendingPlugins() {
File[] fileArr = new File(Settings.propPluginsDirectory.getString()).listFiles();
if (fileArr == null) {
// Nothing to do
return;
}
// Install all pending plugins
for (int i = 0; i < fileArr.length; i++) {
if (fileArr[i].getName().endsWith(".inst")) {
// This plugin wants to be installed
String fileName = fileArr[i].getAbsolutePath();
String oldFileName = fileName.substring(0, fileName.length() - 5);
File oldFile = new File(oldFileName);
// delete the old proxy, this will force loading of the new plugin (even if it's not active)
String oldProxyName = getProxyFileName(oldFile);
File oldProxy = new File(oldProxyName);
if (oldProxy.exists()) {
deletePluginProxy(oldProxy);
}
String oldIconName = getProxyIconFileName(oldFile);
File oldIcon = new File(oldIconName);
if (oldIcon.exists()) {
deletePluginProxy(oldIcon);
}
// Delete the old file
deletePluginProxy(oldFile);
// Rename the file, so the PluginLoader will install it later
if (!fileArr[i].renameTo(oldFile)) {
mLog.warning("Installing pending plugin failed: " + fileName);
}
}
}
}
private PluginProxy loadProxy(File proxyFile) {
String lcFileName = proxyFile.getName().toLowerCase();
if (!lcFileName.endsWith(".proxy")) {
mLog.warning("not a valid proxy file "+proxyFile.getAbsolutePath());
return null;
}
if (proxyFile.canRead()) {
JavaPluginProxy proxy = readPluginProxy(proxyFile);
if (proxy != null) {
PluginProxyManager.getInstance().registerPlugin(proxy);
if (new File(proxy.getPluginFileName()).getParentFile().equals(new File(Settings.propPluginsDirectory.getString()))) {
File pluginFile = new File(proxy.getPluginFileName());
mDeleteablePlugin.put(proxy, pluginFile);
}
return proxy;
}
}
return null;
}
/**
* Loads the plugin from the file system
* @param pluginFile File to load
* @param deleteable is the Plugin deleteable
*/
public Object loadPlugin(File pluginFile, boolean deleteable) {
Object plugin = null;
String lcFileName = pluginFile.getName().toLowerCase();
if (mSuccessfullyLoadedPluginFiles.contains(lcFileName)) {
mLog.warning("cannot load plugin "+pluginFile.getAbsolutePath()+" - already loaded");
return null;
}
try {
if (lcFileName.endsWith(".jar")) {
plugin = loadJavaPlugin(pluginFile);
}
else if (lcFileName.endsWith(".bsh")) {
plugin = loadBeanShellPlugin(pluginFile);
}
else {
mLog.warning("Unknown plugin type: " + pluginFile.getAbsolutePath());
}
if (plugin instanceof Plugin) {
((Plugin)plugin).setJarFile(pluginFile);
// check if the proxy is already loaded, but the plugin was not loaded yet
JavaPluginProxy javaplugin = (JavaPluginProxy) PluginProxyManager.getInstance().getPluginForId(JavaPluginProxy.getJavaPluginId((Plugin) plugin));
if (javaplugin != null) {
javaplugin.setPlugin((Plugin) plugin, pluginFile.getPath());
}
// it was not yet loaded, so create new proxy
else {
javaplugin = new JavaPluginProxy((Plugin)plugin, pluginFile.getPath());
PluginProxyManager.getInstance().registerPlugin(javaplugin);
}
if (deleteable) {
mDeleteablePlugin.put(javaplugin, pluginFile);
}
saveProxyInfo(pluginFile, javaplugin);
}
else if (plugin instanceof AbstractPluginProxy) {
PluginProxyManager.getInstance().registerPlugin((AbstractPluginProxy)plugin);
if (deleteable) {
mDeleteablePlugin.put((AbstractPluginProxy)plugin, pluginFile);
}
}
else if (plugin instanceof devplugin.AbstractTvDataService) {
TvDataServiceProxy proxy = new DefaultTvDataServiceProxy((devplugin.AbstractTvDataService)plugin);
TvDataServiceProxyManager.getInstance().registerTvDataService(proxy);
if (deleteable) {
mDeleteablePlugin.put(proxy, pluginFile);
}
}
else if (plugin instanceof TvDataService) {
TvDataServiceProxy proxy = new DeprecatedTvDataServiceProxy((TvDataService)plugin);
TvDataServiceProxyManager.getInstance().registerTvDataService(proxy);
}
if(plugin != null) {
mSuccessfullyLoadedPluginFiles.add(lcFileName);
mLog.info("Loaded plugin "+pluginFile.getAbsolutePath());
}
}catch (Throwable thr) {
mLog.log(Level.WARNING, "Loading plugin file failed: "
+ pluginFile.getAbsolutePath(), thr);
thr.printStackTrace();
}
return plugin;
}
/**
* read the contents of a proxy file to get the necessary
* information about the plugin managed by this proxy to recreate
* the proxy without the plugin actually being loaded
*
* @param proxyFile
* @return pluginProxy
*/
private JavaPluginProxy readPluginProxy(File proxyFile) {
try {
DataInputStream in = new DataInputStream(new BufferedInputStream(new FileInputStream(proxyFile)));
String name = in.readUTF();
String author = in.readUTF();
String description = in.readUTF();
String license = in.readUTF();
int major = in.readInt();
int minor = in.readInt();
boolean stable = in.readBoolean();
Version version = new Version(major, minor, stable);
String pluginId = in.readUTF();
@SuppressWarnings("unused")
long fileSize = in.readLong();
String lcFileName = in.readUTF();
in.close();
// check existence of plugin file
File pluginFile = new File(lcFileName);
if (!pluginFile.canRead()) {
deletePluginProxy(proxyFile);
return null;
}
// everything seems fine, create plugin proxy and plugin info
PluginInfo info = new PluginInfo(name, description, author, version, license);
// now get icon
String iconFileName = getProxyIconFileName(proxyFile);
return new JavaPluginProxy(info, lcFileName, pluginId, iconFileName);
} catch (Exception e) {
// delete proxy on read error, maybe the format has changed
deletePluginProxy(proxyFile);
return null;
}
}
private void deletePluginProxy(File proxyFile) {
String iconName = getProxyIconFileName(proxyFile);
proxyFile.delete();
File iconFile = new File(iconName);
iconFile.delete();
}
/**
* Saves the information of a plugin to disk, so it does not need to be loaded next time
* @param pluginFile full plugin file name
* @param proxy proxy of the plugin
*/
private void saveProxyInfo(File pluginFile, JavaPluginProxy proxy) {
try {
String proxyFileName = getProxyFileName(pluginFile);
DataOutputStream out = new DataOutputStream(new
BufferedOutputStream(new FileOutputStream(proxyFileName)));
PluginInfo info = proxy.getInfo();
out.writeUTF(info.getName());
out.writeUTF(info.getAuthor());
out.writeUTF(info.getDescription());
String license = info.getLicense();
if (license == null) {
license = "";
}
out.writeUTF(license);
Version version = info.getVersion();
out.writeInt(version.getMajor());
out.writeInt(version.getMinor());
out.writeBoolean(version.isStable());
out.writeUTF(proxy.getId());
out.writeLong(pluginFile.length());
out.writeUTF(proxy.getPluginFileName());
out.close();
// also store the plugin icon, if it is not yet available
String iconFileName = getProxyIconFileName(pluginFile);
File iconFile = new File(iconFileName);
if (!iconFile.exists()) {
Icon pluginIcon = proxy.getPluginIcon();
if (pluginIcon != null && pluginIcon instanceof ImageIcon) {
IOUtilities.writeImageIconToFile((ImageIcon)pluginIcon, "png", iconFile);
}
}
} catch (Exception e) {
}
}
/**
* get the file name of the proxied icon for a plugin
* @param pluginFile
* @return icon file name
*/
private String getProxyIconFileName(File pluginFile) {
String name = pluginFile.getName();
name = name.substring(0, name.indexOf("."));
return Settings.getUserSettingsDirName() + File.separatorChar + name + ".icon.png";
}
/**
* file name of the proxy file for a plugin
*
* @param pluginFile
* @return proxy file name
*/
private String getProxyFileName(File pluginFile) {
return Settings.getUserSettingsDirName() + File.separatorChar + pluginFile.getName() + ".proxy";
}
/**
* Loads all plugins within the specified folder
* @param folder specific Folder
* @param deleteable True if the Plugins in this Folder are deleteable
*/
private void loadPlugins(File folder, boolean deleteable) {
// check for plugin proxies only one time per run
if (loadedProxies == null) {
loadedProxies = new ArrayList<PluginProxy>();
final String[] deactivatedPluginArr = Settings.propDeactivatedPlugins.getStringArray();
// only check proxies if at least one plugin is not active
if (deactivatedPluginArr != null && deactivatedPluginArr.length > 0) {
File settingsDir = new File(Settings.getUserSettingsDirName());
File[] proxyFiles = settingsDir.listFiles(new FilenameFilter() {
public boolean accept(File dir, String name) {
if (!name.endsWith(".jar.proxy")) {
return false;
}
String mainName = name.substring(0, name.length() - 10).toLowerCase();
for (String deactivatedId : deactivatedPluginArr) {
if (deactivatedId.indexOf(mainName)>0) {
return true;
}
}
return false;
}});
if (proxyFiles != null) {
for (File proxyFile : proxyFiles) {
PluginProxy proxy = loadProxy(proxyFile);
if (proxy != null) {
loadedProxies.add(proxy);
mLog.info("Loaded plugin proxy " + proxyFile);
}
else {
mLog.warning("Failed loading plugin proxy " + proxyFile);
}
}
}
}
}
File[] fileArr = folder.listFiles(new FilenameFilter(){
public boolean accept(File dir, String name) {
return !("FavoritesPlugin.jar".equals(name)
|| "ReminderPlugin.jar".equals(name)
|| "ProgramInfo.jar".equals(name)
|| "SearchPlugin.jar".equals(name));
}
});
if (fileArr == null) {
// Nothing to do
return;
}
for (File file : fileArr) {
boolean load = true;
for (PluginProxy proxy : loadedProxies) {
if (proxy.getPluginFileName().equalsIgnoreCase(file.getPath())) {
load = false;
break;
}
}
if (load) {
loadPlugin(file, deleteable);
}
}
}
public void loadAllPlugins() {
/* 0) delete all plugins the user doesn't want anymore */
String[] files = Settings.propDeleteFilesAtStart.getStringArray();
if ((files != null) && (files.length > 0)) {
for (int i=0;i<files.length;i++) {
try {
mLog.info("Deleting " + files[i]);
new File(files[i]).delete();
} catch (Exception e) {
e.printStackTrace();
}
}
Settings.propDeleteFilesAtStart.setStringArray(new String[0]);
}
/* 1) load all plugins from the plugins folder in the user's home directory */
String pluginsFolderName = Settings.propPluginsDirectory.getString();
File f = new File(pluginsFolderName);
boolean success = true;
if (!f.exists()) {
if (!f.mkdirs()) {
mLog.warning("Could not create plugins folder "+f.getAbsolutePath());
success = false;
}
}
if (success) {
loadPlugins(f, true);
}
/* 2) load the plugins from the plugins folder */
loadPlugins(new File(PluginProxyManager.PLUGIN_DIRECTORY), false);
/* 3) load the plugins from the tvdataservice folder */
loadPlugins(new File(TvDataServiceProxyManager.PLUGIN_DIRECTORY), false);
}
private Object loadJavaPlugin(File jarFile) throws TvBrowserException {
Object plugin;
// Create a class loader for the plugin
ClassLoader classLoader;
ClassLoader classLoader2 = null;
try {
URL[] urls = new URL[] { jarFile.toURI().toURL() };
classLoader = URLClassLoader.newInstance(urls, ClassLoader.getSystemClassLoader());
try {
if(!new File(PLUGIN_DIRECTORY).equals(jarFile.getParentFile()) && new File(PLUGIN_DIRECTORY,jarFile.getName()).isFile()) {
urls = new URL[] { new File(PLUGIN_DIRECTORY, jarFile.getName()).toURI().toURL() };
classLoader2 = URLClassLoader.newInstance(urls, ClassLoader.getSystemClassLoader());
}
} catch (MalformedURLException exc) {}
} catch (MalformedURLException exc) {
throw new TvBrowserException(getClass(), "error.1",
"Loading Jar file of a plugin failed: {0}.",
jarFile.getAbsolutePath(), exc);
}
// Get the plugin name
String pluginName = jarFile.getName();
if (pluginName.endsWith(".jar")) {
pluginName = pluginName.substring(0, pluginName.length() - 4);
}
// Create a plugin instance
try {
Class pluginClass = classLoader.loadClass(pluginName.toLowerCase() + "." + pluginName);
if(classLoader2 != null) {
try {
Method getVersion = pluginClass.getMethod("getVersion",new Class[0]);
Class pluginClass2 = classLoader2.loadClass(pluginName.toLowerCase() + "." + pluginName);
Method getVersion2 = pluginClass2.getMethod("getVersion",new Class[0]);
Version version1 = (Version)getVersion.invoke(pluginClass, new Object[0]);
Version version2 = (Version)getVersion2.invoke(pluginClass2, new Object[0]);
if(version2.compareTo(version1) > 0) {
return null;
}
}catch(Throwable t) {}
}
try {
Method preInstancing = pluginClass.getMethod("preInstancing",new Class[0]);
preInstancing.invoke(pluginClass,new Object[0]);
}catch(Throwable ti) {}
plugin = pluginClass.newInstance();
}
catch (Throwable thr) {
throw new TvBrowserException(getClass(), "error.2",
"Could not load plugin {0}.", jarFile.getAbsolutePath(), thr);
}
return plugin;
}
private Object loadBeanShellPlugin(File file) {
return new BeanShellPluginProxy(file);
}
/**
* Delete a Plugin
* @param proxy Proxy for the Plugin that should be deleted
* @return true if successful
*/
public boolean deletePlugin(PluginProxy proxy) {
// mark plugin file for deletion
File file = mDeleteablePlugin.get(proxy);
if (file != null) {
Settings.propDeleteFilesAtStart.addItem(file.toString());
// mark proxy file for deletion
String proxyFile = getProxyFileName(file);
Settings.propDeleteFilesAtStart.addItem(proxyFile);
try {
PluginProxyManager.getInstance().removePlugin(proxy);
} catch (TvBrowserException exc) {
ErrorHandler.handle(exc);
return false;
}
mDeleteablePlugin.remove(proxy);
return true;
}
return false;
}
/**
* Delete a data service
* @param service Data service that should be deleted
* @return true if successful
* @since 2.7
*/
public boolean deleteDataService(TvDataServiceProxy service) {
// mark plugin file for deletion
File file = mDeleteablePlugin.get(service);
if (file != null) {
Settings.propDeleteFilesAtStart.addItem(file.toString());
// mark proxy file for deletion
String proxyFile = getProxyFileName(file);
Settings.propDeleteFilesAtStart.addItem(proxyFile);
mDeleteablePlugin.remove(service);
return true;
}
return false;
}
/**
* Is a Plugin deleteable ?
* @param plugin Plugin that should be deleted
* @return true if deleteable
*/
public boolean isPluginDeletable(PluginProxy plugin) {
return mDeleteablePlugin.containsKey(plugin);
}
/**
* Is a data service deleteable ?
* @param service Data service that should be deleted
* @return true if deleteable
* @since 2.7
*/
public boolean isDataServiceDeletable(TvDataServiceProxy service) {
return mDeleteablePlugin.containsKey(service);
}
/**
* delete all plugin proxies to force re-reading the plugin classes on next start
*/
public void deleteAllPluginProxies() {
File settingsDir = new File(Settings.getUserSettingsDirName());
File[] proxyFiles = settingsDir.listFiles(new FilenameFilter() {
public boolean accept(File dir, String name) {
return name.endsWith(".jar.proxy");
}});
if (proxyFiles != null) {
for (File proxyFile : proxyFiles) {
Settings.propDeleteFilesAtStart.addItem(proxyFile.toString());
}
}
}
}
The table below shows all metrics for PluginLoader.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 98.00 | Number of blocks | |
| BLOCK_COMMENT | 29.00 | Number of block comment lines | |
| COMMENTS | 122.00 | Comment lines | |
| COMMENT_DENSITY | 0.36 | Comment density | |
| COMPARISONS | 60.00 | Number of comparison operators | |
| CYCLOMATIC | 85.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 17.00 | Comments in declarations | |
| DOC_COMMENT | 70.00 | Number of javadoc comment lines | |
| ELOC | 336.00 | Effective lines of code | |
| EXEC_COMMENTS | 27.00 | Comments in executable code | |
| EXITS | 96.00 | Procedure exits | |
| FUNCTIONS | 22.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 75.44 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 59.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 1.00 | 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 | 4.00 | 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 | 3.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 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 | 0.00 | 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 | 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 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 2.00 | 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 | 3.00 | 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 | 1.00 | 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 | 7.00 | JAVA0166 Generic exception caught | |
| JAVA0167 | 0.00 | JAVA0167 ThreadDeath not rethrown | |
| JAVA0169 | 0.00 | JAVA0169 Unnecessary catch block: exception 'exception' | |
| JAVA0170 | 4.00 | JAVA0170 Caught exception not derived from java.lang.Exception | |
| JAVA0171 | 1.00 | 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 | 2.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 0.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 2.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 2.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 0.00 | JAVA0278 Unnecessary use of Boolean constructor | |
| JAVA0279 | 0.00 | JAVA0279 Serialization method readObject or readObjectNoData calls an overridable method | |
| JAVA0280 | 0.00 | JAVA0280 IllegalMonitorStateException caught | |
| JAVA0281 | 0.00 | JAVA0281 Iterator.next() not called in loop | |
| JAVA0282 | 0.00 | JAVA0282 Call to Iterator.next() in loop which does not test Iterator.hasNext() | |
| JAVA0283 | 0.00 | JAVA0283 Control variable not updated in loop body | |
| JAVA0284 | 0.00 | JAVA0284 Explicit garbage collection | |
| JAVA0285 | 0.00 | JAVA0285 Dereference of potentially null variable | |
| JAVA0286 | 0.00 | JAVA0286 Dereference of null variable | |
| JAVA0287 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 618.00 | Number of lines in the source file | |
| LINE_COMMENT | 23.00 | Number of line comments | |
| LOC | 421.00 | Lines of code | |
| LOGICAL_LINES | 227.00 | Number of statements | |
| LOOPS | 2.00 | Number of loops | |
| NEST_DEPTH | 6.00 | Maximum nesting depth | |
| OPERANDS | 1085.00 | Number of operands | |
| OPERATORS | 2015.00 | Number of operators | |
| PARAMS | 23.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3100.00 | Halstead program length | |
| PROGRAM_VOCAB | 385.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 36.00 | Number of return points from functions | |
| SIZE | 20821.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 338.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 47.00 | Number of unique operators | |
| WHITESPACE | 75.00 | Number of whitespace lines | |