OpenNapServerRunner.java
| Index Score | ||
|---|---|---|
 |
 |
org.xnap.plugin.opennap.net |
 |
 |
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 | |
|---|---|---|
| EXITS | Procedure exits |  |
| JAVA0143 | JAVA0143 Synchronized method | |
| BLOCKS | Number of blocks | |
| OPERATORS | Number of operators | |
| JAVA0008 | JAVA0008 Empty catch block | |
| PROGRAM_LENGTH | Halstead program length | |
| CYCLOMATIC | Cyclomatic complexity | |
| OPERANDS | Number of operands | |
| LOC | Lines of code | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| JAVA0076 | JAVA0076 Use of magic number | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| ELOC | Effective lines of code | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| LOGICAL_LINES | Number of statements | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| COMPARISONS | Number of comparison operators | |
| LINES | Number of lines in the source file | |
| JAVA0179 | JAVA0179 Local variable hides visible field | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0254 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| DECL_COMMENTS | Comments in declarations | |
| SIZE | Size of the file in bytes | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0119 | JAVA0119 Control variable changed within body of for loop | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0116 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0087 | JAVA0087 Use of Thread.sleep() | |
| LOOPS | Number of loops | |
| JAVA0029 | JAVA0029 Private method not used | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| RETURNS | Number of return points from functions | |
| LINE_COMMENT | Number of line comments | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| NEST_DEPTH | Maximum nesting depth | |
/*
* 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.plugin.opennap.net;
import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.Socket;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.StringTokenizer;
import org.apache.log4j.Logger;
import org.xnap.XNap;
import org.xnap.net.NetHelper;
import org.xnap.plugin.opennap.OpenNapPlugin;
import org.xnap.plugin.opennap.net.msg.MessageFactory;
import org.xnap.plugin.opennap.net.msg.MessageHandler;
import org.xnap.plugin.opennap.net.msg.MessageStrings;
import org.xnap.plugin.opennap.net.msg.client.ClientMessage;
import org.xnap.plugin.opennap.net.msg.client.LoginMessage;
import org.xnap.plugin.opennap.net.msg.client.NewUserLoginMessage;
import org.xnap.plugin.opennap.net.msg.client.NickCheckMessage;
import org.xnap.plugin.opennap.net.msg.server.BrowseResponseMessage;
import org.xnap.plugin.opennap.net.msg.server.EndBrowseMessage;
import org.xnap.plugin.opennap.net.msg.server.EndSearchMessage;
import org.xnap.plugin.opennap.net.msg.server.ErrorMessage;
import org.xnap.plugin.opennap.net.msg.server.InvalidMessageException;
import org.xnap.plugin.opennap.net.msg.server.InvalidNickMessage;
import org.xnap.plugin.opennap.net.msg.server.LoginAckMessage;
import org.xnap.plugin.opennap.net.msg.server.LoginErrorMessage;
import org.xnap.plugin.opennap.net.msg.server.NickAlreadyRegisteredMessage;
import org.xnap.plugin.opennap.net.msg.server.NickNotRegisteredMessage;
import org.xnap.plugin.opennap.net.msg.server.SearchResponseMessage;
import org.xnap.plugin.opennap.net.msg.server.ServerMessage;
import org.xnap.plugin.opennap.util.*;
import org.xnap.util.Preferences;
import org.xnap.util.PriorityQueue;
import org.xnap.util.State;
import org.xnap.util.StringHelper;
public class OpenNapServerRunner extends Thread {
//--- Constant(s) ---
// wait 30 seconds for login ack
//public static final int LOGIN_TIMEOUT = 30 * 1000;
public static final int CONNECT_TIMEOUT = 1 * 30 * 1000;
public static final int MAX_RETRY_ON_CONNECTION_REFUSED = 3;
public static final int SOCKET_TIMEOUT = 0;
//--- Data field(s) ---
private static Logger logger = Logger.getLogger(OpenNapServerRunner.class);
private Socket socket;
private InputStream in;
private OutputStream out;
private OpenNapServer server;
/**
* Remembers the last <code>ErrorMessage</code>.
*/
private String lastError;
private OpenNapSearch currentSearch;
private OpenNapBrowse currentBrowse;
/**
* Queue of pending searches.
*/
private PriorityQueue searchQueue = new PriorityQueue();
/**
* Queue of pending browses.
*/
private LinkedList browseQueue = new LinkedList();
/**
* Queue of pending messages.
*/
private SendQueue sendQueue = new SendQueue(this);
private Object sendLock = new Object();
/**
* If set to true this runner is to die.
*/
private boolean die = false;
/**
* The state description why the runner has died.
*/
private String dieReason;
private boolean useUTF8Encoding;
//--- Constructor(s) ---
public OpenNapServerRunner(OpenNapServer server)
{
super("OpenNapServer " + server.toString());
this.server = server;
this.useUTF8Encoding
= OpenNapPlugin.getPreferences().getUseUTF8Encoding();
}
//--- Method(s) ---
public synchronized void enqueue(OpenNapBrowse browse)
{
if (die) {
browse.getRequest().failed();
}
else {
browseQueue.add(browse);
allowBrowse();
}
}
/**
*
*/
public synchronized void enqueue(OpenNapSearch search)
{
if (die) {
search.getRequest().failed();
}
else {
searchQueue.add(search, search.getPriority());
allowSearch();
}
}
public synchronized void dequeue(OpenNapBrowse browse)
{
browseQueue.remove(browse);
}
/**
* Invoked by {@link OpenNapSearch} when search did not take place or
* was aborted.
*/
public synchronized void dequeue(OpenNapSearch search)
{
searchQueue.remove(search);
}
public synchronized void die(org.xnap.util.State newState, String description)
{
if (!die) {
die = true;
dieReason = description;
server.setState(newState, description);
}
else {
// ups looks like we died multiple times
logger.error("Already dead");
}
}
public void disconnect()
{
die = true;
// FIX: ugly work around to force close immediatelly
try {
socket.close();
}
catch (Exception e) {
}
this.interrupt();
}
private synchronized void close()
{
if (socket != null) {
try {
socket.close();
} catch (IOException e) {}
}
if (in != null) {
try {
in.close();
} catch (IOException e) {}
}
if (out != null) {
try {
out.close();
} catch (IOException e) {}
}
if (currentBrowse != null) {
currentBrowse.getRequest().failed();
}
for (Iterator i = browseQueue.iterator(); i.hasNext();) {
((OpenNapBrowse)i.next()).getRequest().failed();
}
if (currentSearch != null) {
currentSearch.getRequest().failed();
}
for (Iterator i = searchQueue.iterator(); i.hasNext();) {
((OpenNapSearch)i.next()).getRequest().failed();
}
// notify all peers
}
public SendQueue getSendQueue()
{
return sendQueue;
}
private byte[] read(int length) throws IOException
{
byte[] textBuf = new byte[length];
int read = 0;
while (read < length) {
int c = in.read(textBuf, read, length - read);
if (c == -1) {
throw new IOException("Connection closed");
}
read += c;
}
return textBuf;
}
/**
* Receives the next message. Invoked by {@link #runQueue()}.
*/
private ServerMessage recv()
{
Packet p = null;
while (!die) {
try {
p = recvPacket();
return MessageFactory.create(server, p.id, p.data);
}
catch (IOException e) {
logger.debug(server.getHost() + ":" + server.getPort()
+ " recv ", e);
die(org.xnap.util.State.FAILED, (lastError != null)
? lastError
: NetHelper.getErrorMessage(e));
}
catch (InvalidMessageException e) {
logger.error(server.getHost() + ":" + server.getPort()
+ " recv: " + p, e);
}
}
return null;
}
private Packet recvPacket() throws IOException
{
byte[] header = read(4);
// byte types are signed...
int lo = 0xFF & (int)header[0];
int hi = 0xFF & (int)header[1];
int length = 0xFFFF & (hi << 8 | lo);
lo = 0xFF & (int)header[2];
hi = 0xFF & (int)header[3];
int id = 0xFFFF & (hi << 8 | lo);
byte[] data = read(length);
String content = (length > 0)
? (useUTF8Encoding)
? StringHelper.toString(data)
: new String(data)
: "";
logger.debug("< " + server.getHost() + ":" + server.getPort()
+ " (" + id + ") [" +
MessageFactory.getMessageName(id) + "] " + content);
return new Packet(id, content);
}
/**
* This method should only be invoked by the associated
* {@link SendQueue} object.
*/
void send(ClientMessage msg) throws IOException
{
String data = msg.getData(server.getVersion());
sendPacket(new Packet(msg.getType(), data));
}
private void sendPacket(Packet p) throws IOException
{
logger.debug
("> " + server.getHost() + ":" + server.getPort() + " "
+ MessageStrings.getMessageName(p.id) + "(" + p.id + ") "
+ p.data);
try {
if (out == null) {
// FIX: should not happen
throw new IOException(XNap.tr("Invalid stream state"));
}
byte[] content
= (useUTF8Encoding)
? p.data.getBytes("UTF-8")
: p.data.getBytes();
int dataLength = content.length;
byte[] data = new byte[2 + 2 + dataLength];
int type = (short)p.id;
int len = (short)dataLength;
data[0] = (byte)len;
data[1] = (byte)(len >> 8);
data[2] = (byte)type;
data[3] = (byte)(type >> 8);
System.arraycopy(content, 0, data, 4, content.length);
synchronized (sendLock) {
out.write(data);
out.flush();
}
}
catch (IOException e) {
logger.debug(server.getHost() + ":" + server.getPort() +
" sendPacket " + p, e);
die(org.xnap.util.State.FAILED, NetHelper.getErrorMessage(e));
throw e;
}
}
private void connect()
{
try {
if (server.isRedirector()) {
if (fetchHost(server.getHost(), server.getPort())) {
connect(null, server.getRedirectedHost(),
server.getRedirectedPort());
}
else {
die(org.xnap.util.State.FAILED, "Invalid response");
}
}
else {
connect(server.getIP(), server.getHost(), server.getPort());
}
}
catch (ConnectException e) {
// connection refused, we will try again later
die(org.xnap.util.State.FAILED, NetHelper.getErrorMessage(e));
}
catch (IOException e) {
// unrecoverable error
die(org.xnap.util.State.ERROR, NetHelper.getErrorMessage(e));
if (server.canAutoRemove()) {
OpenNapPlugin.getServerManager().remove(server);
}
}
}
/**
* Opens the socket to the server and connects the streams.
* If host1 != null, it is tried first.
*
* @param host1 the ip address of the server or null if unknown
* @param host2 the hostname of the server
* @param port the port of the server
*/
private void connect(String host1, String host2, int port)
throws IOException
{
if (host1 != null) {
try {
socket = new Socket(host1, port);
}
catch (IOException e) {
server.setIP(null);
}
}
if (socket == null) {
for (int i = 0; i < MAX_RETRY_ON_CONNECTION_REFUSED
&& socket == null; i++) {
try {
socket = new Socket(host2, port);
}
catch (ConnectException e) {
if (i == MAX_RETRY_ON_CONNECTION_REFUSED - 1) {
throw e;
}
try {
Thread.sleep(10);
}
catch (InterruptedException e2) {
}
}
}
}
try {
socket.setSoTimeout(CONNECT_TIMEOUT);
in = new BufferedInputStream(socket.getInputStream());
out = socket.getOutputStream();
server.setStateDescription(XNap.tr("Logging in") + "...");
if (server.isNewUser()) {
send(new NickCheckMessage(server.getNick()));
}
else {
login(false);
}
}
catch (IOException e) {
die(org.xnap.util.State.FAILED, XNap.tr("Login failed"));
}
}
/**
* Connects to a redirector server and reads the host information.
*
* @return true, if successful; false, if failed
*/
public boolean fetchHost(String host, int port) throws IOException
{
Socket socket = null;
InputStream in = null;
try {
socket = new Socket(host, port);
in = new BufferedInputStream(socket.getInputStream());
byte[] b = new byte[1024];
int c = in.read(b, 0, 1024);
if (c > 0) {
// chop the \n
String response = new String(b, 0, c - 1);
StringTokenizer t = new StringTokenizer(response, ":");
if (t.countTokens() == 2) {
try {
server.setRedirectedHost(t.nextToken());
server.setRedirectedPort
(Integer.parseInt(t.nextToken()));
return true;
} catch (NumberFormatException e) {}
}
}
}
finally {
if (socket != null) {
try {
socket.close();
} catch (IOException e) {}
}
if (in != null) {
try {
in.close();
} catch (IOException e) {}
}
}
return false;
}
/**
* Sends the login message to the server.
*/
private void login(boolean newUser) throws IOException
{
Preferences prefs = Preferences.getInstance();
String nick = server.getNick();
String password = server.getPassword();
int port = server.getLocalPort();
String email = server.getEmail();
String info = OpenNapPlugin.getPreferences().getClientInfo();
int linkSpeed = OpenNapLinkType.getIndexOfType(prefs.getLinkSpeed());
if (newUser) {
send(new NewUserLoginMessage
(nick, password, port, info, linkSpeed, email));
}
else {
send(new LoginMessage(nick, password, port, info, linkSpeed));
}
}
/**
* Polls the input stream for messages and passes them to the
* {@link MessageHandler}.
*/
private void runQueue()
{
while (!die) {
ServerMessage msg = recv();
if (die) {
return;
}
if (msg instanceof NickNotRegisteredMessage) {
try {
login(true);
}
catch (IOException e) {
die(org.xnap.util.State.FAILED, e.getLocalizedMessage());
}
}
else if (msg instanceof NickAlreadyRegisteredMessage) {
die(org.xnap.util.State.FAILED, XNap.tr("Nick already registered"));
}
else if (msg instanceof InvalidNickMessage) {
die(org.xnap.util.State.FAILED, XNap.tr("Invalid nick"));
}
else if (msg instanceof LoginAckMessage) {
server.setNewUser(false);
try {
socket.setSoTimeout(SOCKET_TIMEOUT);
}
catch (IOException e) {
logger.warn("Could not set socket timeout", e);
}
server.setState(org.xnap.util.State.CONNECTED);
}
else if (msg instanceof LoginErrorMessage) {
die(org.xnap.util.State.FAILED, ((LoginErrorMessage)msg).message);
}
else if (msg instanceof BrowseResponseMessage) {
if (currentBrowse != null) {
currentBrowse.received((BrowseResponseMessage)msg);
}
}
else if (msg instanceof EndBrowseMessage) {
if (currentBrowse != null) {
synchronized (this) {
currentBrowse.finished();
currentBrowse = null;
}
updateStatus();
}
}
else if (msg instanceof SearchResponseMessage) {
if (currentSearch != null) {
currentSearch.received((SearchResponseMessage)msg);
}
}
else if (msg instanceof EndSearchMessage) {
if (currentSearch != null) {
synchronized (this) {
currentSearch.finished();
currentSearch = null;
}
updateStatus();
}
}
else if (msg instanceof ErrorMessage) {
lastError = ((ErrorMessage)msg).message;
if (lastError.startsWith("You have been killed by server")
|| lastError.startsWith("You were killed by server")) {
// handle server kicks
die(org.xnap.util.State.FAILED, lastError);
}
}
OpenNapPlugin.getMessageHandler().handle(msg);
allowSearch();
allowBrowse();
}
}
/**
*
*/
public void run()
{
Thread.currentThread().setPriority(Thread.MIN_PRIORITY);
//userByNick.clear();
connect();
runQueue();
server.setState(org.xnap.util.State.DISCONNECTED, dieReason);
logger.debug(server.toString() + " has died");
}
private void updateStatus()
{
StringBuffer sb = new StringBuffer(XNap.tr("connected"));
if (currentSearch != null) {
sb.append(", ");
sb.append(XNap.tr("searching"));
}
if (searchQueue.size() > 0) {
sb.append(", ");
sb.append(XNap.tr("{0} searches pending", searchQueue.size()));
}
if (currentBrowse != null) {
sb.append(", browsing");
}
server.setStateDescription(sb.toString());
}
private synchronized void allowBrowse()
{
if (currentBrowse != null || browseQueue.size() == 0) {
return;
}
currentBrowse = (OpenNapBrowse)browseQueue.removeFirst();
MessageHandler.send(server, currentBrowse.getRequest());
updateStatus();
}
private synchronized void allowSearch()
{
if (currentSearch != null || searchQueue.size() == 0) {
return;
}
currentSearch = (OpenNapSearch)searchQueue.pop();
MessageHandler.send(server, currentSearch.getRequest());
updateStatus();
}
}
The table below shows all metrics for OpenNapServerRunner.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 118.00 | Number of blocks | |
| BLOCK_COMMENT | 18.00 | Number of block comment lines | |
| COMMENTS | 89.00 | Comment lines | |
| COMMENT_DENSITY | 0.25 | Comment density | |
| COMPARISONS | 57.00 | Number of comparison operators | |
| CYCLOMATIC | 98.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 21.00 | Comments in declarations | |
| DOC_COMMENT | 55.00 | Number of javadoc comment lines | |
| ELOC | 353.00 | Effective lines of code | |
| EXEC_COMMENTS | 10.00 | Comments in executable code | |
| EXITS | 104.00 | Procedure exits | |
| FUNCTIONS | 23.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 98.45 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 53.00 | 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 | 8.00 | 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 | 1.00 | 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 | 0.00 | JAVA0075 Method parameter hides field | |
| JAVA0076 | 12.00 | 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 | 1.00 | 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 | 6.00 | 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 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 4.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 3.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 6.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 1.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 1.00 | 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 | 8.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 1192.00 | 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 | 2.00 | 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 | 2.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 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 | 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 | 661.00 | Number of lines in the source file | |
| LINE_COMMENT | 16.00 | Number of line comments | |
| LOC | 483.00 | Lines of code | |
| LOGICAL_LINES | 216.00 | Number of statements | |
| LOOPS | 6.00 | Number of loops | |
| NEST_DEPTH | 5.00 | Maximum nesting depth | |
| OPERANDS | 1088.00 | Number of operands | |
| OPERATORS | 2121.00 | Number of operators | |
| PARAMS | 16.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3209.00 | Halstead program length | |
| PROGRAM_VOCAB | 385.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 37.00 | Number of return points from functions | |
| SIZE | 16354.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 326.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 59.00 | Number of unique operators | |
| WHITESPACE | 89.00 | Number of whitespace lines | |