OpenNapDownloadRunner.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 |  |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0008 | JAVA0008 Empty catch block | |
| RETURNS | Number of return points from functions | |
| BLOCKS | Number of blocks | |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0287 | JAVA0287 Unnecessary null check | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| UNIQUE_OPERANDS | Number of unique operands | |
| JAVA0076 | JAVA0076 Use of magic number | |
| UNIQUE_OPERATORS | Number of unique operators | |
| COMPARISONS | Number of comparison operators | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| LINE_COMMENT | Number of line comments | |
| LOC | Lines of code | |
| OPERATORS | Number of operators | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0171 | JAVA0171 Unused local variable | |
| JAVA0087 | JAVA0087 Use of Thread.sleep() | |
| PROGRAM_LENGTH | Halstead program length | |
| DOC_COMMENT | Number of javadoc comment lines | |
| LOGICAL_LINES | Number of statements | |
| COMMENTS | Comment lines | |
| ELOC | Effective lines of code | |
| PARAMS | Number of formal parameter declarations | |
| FUNCTIONS | Number of function declarations | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
/*
* 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.EOFException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InterruptedIOException;
import java.io.*;
import java.io.RandomAccessFile;
import java.net.*;
import org.apache.log4j.Logger;
import org.xnap.XNap;
import org.xnap.net.NetHelper;
import org.xnap.plugin.opennap.net.msg.MessageHandler;
import org.xnap.plugin.opennap.net.msg.client.*;
import org.xnap.plugin.opennap.net.msg.client.DownloadingFileMessage;
import org.xnap.plugin.opennap.user.OpenNapUser;
import org.xnap.util.IllegalOperationException;
import org.xnap.util.State;
/**
* Takes care of the socket communication to the other peer. Spawned
* by {@link OpenNapDownload} once an incoming socket was received (for
* firewalled downloads) or a DownloadAckMessage was received.
*/
public class OpenNapDownloadRunner implements Runnable {
//--- Constant(s) ---
/**
* Socket timeout during connect.
*/
public static final int CONNECT_TIMEOUT = 1 * 30 * 1000;
/**
* Abort transfer if stalled for this long.
*/
public static final int TRANSFER_TIMEOUT = 2 * 60 * 1000;
/**
* Maximum time to wait for segment.
*/
public static final int SEGMENT_MAX_WAIT = 3 * 60 * 1000;
//--- Data field(s) ---
private static Logger logger = Logger.getLogger(OpenNapDownloadRunner.class);
private OpenNapDownload parent;
private boolean die;
private Socket socket;
private InputStream in;
private OutputStream out;
private OpenNapSegment segment;
//--- Constructor(s) ---
public OpenNapDownloadRunner(OpenNapDownload parent, DownloadSocket d)
{
this.parent = parent;
if (d != null) {
this.socket = d.socket;
this.in = d.in;
}
}
//--- Method(s) ---
public void run()
{
try {
try {
try {
download();
parent.setState(State.SUCCEEDED);
}
finally {
parent.getParent().done(parent);
}
}
catch (FileNotFoundException e) {
logger.debug("download failed", e);
parent.setState(State.FAILED,
XNap.tr("Could not create incomplete file"));
}
catch (IOException e) {
logger.debug("download failed", e);
parent.setState(State.FAILED, NetHelper.getErrorMessage(e));
}
catch (InterruptedException e) {
logger.debug("download aborted");
parent.setState(State.NOT_STARTED, parent.getStatus());
}
}
catch (IllegalOperationException e) {
logger.error("unexpected state", e);
}
}
public void stop()
{
die = true;
}
private void close()
{
try {
if (socket != null)
socket.close();
if (in != null)
in.close();
if (out != null)
out.close();
}
catch (IOException e) {
}
}
/**
* Opens socket and requests file.
*/
private void connect(String ip, int port)
throws IOException, InterruptedException
{
logger.debug("opening socket to " + ip + ":" + port);
//socket = new Socket(ip, port);
try {
socket = NetHelper.connect(ip, port, CONNECT_TIMEOUT);
}
catch (SocketException e) {
MessageHandler.send
(parent.getServer(),
new DataPortErrorMessage(parent.getPeer().getName()));
throw e;
}
socket.setSoTimeout(CONNECT_TIMEOUT);
out = socket.getOutputStream();
in = new BufferedInputStream(socket.getInputStream());
parent.setStateDescription(XNap.tr("Negotiating") + "...");
// read magic number '1'
logger.debug("reading magic number");
char c = (char)in.read();
if (c != '1') {
throw new IOException(XNap.tr("Invalid request"));
}
parent.setStateDescription(XNap.tr("Sending get request") + "...");
// get request needs to be split over 2 packets
String message = "GET";
out.write(message.getBytes());
out.flush();
parent.setStateDescription(XNap.tr("Waiting for segment") + "...");
requestSegment();
parent.setStateDescription(XNap.tr("Sending file request") + "...");
message = parent.getServer().getLocalPeer().getName() + " "
+ "\"" + parent.getResult().getFilename() + "\"" + " "
+ segment.getDownloadOffset();
logger.debug("sending request: " + message);
out.write(message.getBytes());
out.flush();
String expected = segment.getTotal() + "";
StringBuffer sb = new StringBuffer();
while (sb.length() < expected.length()) {
int b = in.read();
if (b == -1) {
throw new IOException(XNap.tr("Socket error"));
}
c = (char)b;
if (Character.isDigit(c)) {
// ignore leading zeros
if (segment.getTotal() == 0 || sb.length() != 0
|| c != '0') {
sb.append(c);
}
}
else if (c == 'F') {
throw new IOException(XNap.tr("File not shared"));
}
else {
throw new IOException(XNap.tr("Invalid request"));
}
}
logger.debug("file length: " + sb.toString());
if (Long.parseLong(sb.toString()) != segment.getTotal()) {
throw new IOException(XNap.tr("Filesizes did not match"));
}
}
private void connect() throws IOException, InterruptedException
{
socket.setSoTimeout(CONNECT_TIMEOUT);
out = socket.getOutputStream();
requestSegment();
// write offset
Long offset = new Long(segment.getDownloadOffset());
out.write(offset.toString().getBytes());
out.flush();
}
private void requestSegment() throws IOException, InterruptedException
{
// spin lock for segment
socket.setSoTimeout(SEGMENT_MAX_WAIT + 30 * 1000);
long startTime = System.currentTimeMillis();
while (segment == null
&& System.currentTimeMillis() - startTime < SEGMENT_MAX_WAIT) {
// request segment for offset
segment = parent.requestSegment();
if (segment != null) {
return;
}
Thread.sleep(500);
}
throw new IOException(XNap.tr("No segment available"));
}
private void download() throws IOException, InterruptedException
{
boolean messageSent = false;
try {
if (socket == null) {
OpenNapUser user = (OpenNapUser)parent.getPeer();
connect(user.getHost(), user.getPort());
}
else {
connect();
}
if (segment.getFile() == null) {
segment.setFile(parent.createIncompleteFile());
}
parent.setState(State.DOWNLOADING);
MessageHandler.send(new DownloadingFileMessage());
messageSent = true;
// compare a few bytes
int byteCount = segment.getOverlap();
if (byteCount > 0) {
match(segment.getFileOffset(), byteCount);
}
downloadToFile();
}
catch (IOException e) {
try {
if (segment != null) {
parent.returnSegment(segment);
}
}
catch (IOException e2) {
logger.debug("segment merge failed", e2);
}
// we propagate the first exception
throw e;
}
catch (InterruptedException e) {
try {
if (segment != null) {
parent.returnSegment(segment);
}
}
catch (IOException e2) {
logger.debug("segment merge failed", e2);
}
// we propagate the first exception
throw e;
}
finally {
close();
if (messageSent) {
MessageHandler.send(new DownloadCompleteMessage());
}
}
parent.returnSegment(segment);
}
private void match(long offset, int byteCount)
throws IOException, InterruptedException
{
RandomAccessFile fileIn = null;
try {
fileIn = new RandomAccessFile(segment.getFile(), "r");
byte[] fileData = new byte[byteCount];
fileIn.seek(offset);
fileIn.readFully(fileData);
byte[] downloadData = new byte[byteCount];
readFully(downloadData, downloadData.length);
for (int i = 0; i < byteCount; i++) {
if (fileData[i] != downloadData[i]) {
throw new IOException(XNap.tr("resume failed at {0}",
new Integer(byteCount)));
}
}
}
finally {
if (fileIn != null) {
try {
fileIn.close();
}
catch (IOException e) {
}
}
}
}
/**
*
* <p>PRECONDITION<br>
* socket != null, in != null, out != null
*/
private void downloadToFile() throws IOException, InterruptedException
{
FileOutputStream fileOut = null;
try {
fileOut = new FileOutputStream
(segment.getFile().getAbsolutePath(), true);
// we need to catch aborts for slow connects quickly
byte[] data = new byte[512];
long transferred = 0;
long toTransfer = segment.getEnd() - segment.getStart();
while (toTransfer > 0) {
int len = (int)Math.min(toTransfer, data.length);
readFully(data, len);
len = segment.commitToFile(len);
parent.commit(len);
try {
fileOut.write(data, 0, len);
}
catch (IOException e) {
// FIX: how many bytes were acctually written?
segment.commitToFile(-len);
throw e;
}
toTransfer = segment.getRemaining();
}
}
finally {
if (fileOut != null) {
try {
fileOut.close();
}
catch (IOException e) {
}
}
}
}
private void readFully(byte[] data, int len)
throws IOException, InterruptedException
{
int byteCount = 0;
long startTime = System.currentTimeMillis();
while (byteCount < len) {
if (die) {
throw new InterruptedException();
}
else if (byteCount == 0 && (System.currentTimeMillis() - startTime
> TRANSFER_TIMEOUT)) {
throw (new IOException(XNap.tr("socket timeout")));
}
try {
// blocks for at most SOCKET_TIMEOUT
int read = in.read(data, byteCount, len - byteCount);
if (read == -1) {
throw new EOFException();
}
byteCount += read;
}
catch (InterruptedIOException e) {
}
}
}
}
The table below shows all metrics for OpenNapDownloadRunner.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 70.00 | Number of blocks | |
| BLOCK_COMMENT | 18.00 | Number of block comment lines | |
| COMMENTS | 57.00 | Comment lines | |
| COMMENT_DENSITY | 0.25 | Comment density | |
| COMPARISONS | 43.00 | Number of comparison operators | |
| CYCLOMATIC | 57.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 11.00 | Comments in declarations | |
| DOC_COMMENT | 22.00 | Number of javadoc comment lines | |
| ELOC | 227.00 | Effective lines of code | |
| EXEC_COMMENTS | 13.00 | Comments in executable code | |
| EXITS | 74.00 | Procedure exits | |
| FUNCTIONS | 11.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 0.62 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 58.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 1.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 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 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 | 3.00 | 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 | 4.00 | 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 | 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 | 2.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 0.00 | 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 | 4.00 | 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 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 0.00 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0137 | 0.00 | JAVA0137 Non-abstract class missing constructor | |
| JAVA0138 | 0.00 | JAVA0138 N parameters defined for method (maximum: M) | |
| JAVA0139 | 0.00 | JAVA0139 Definition of main other than public static void main(java.lang.String[]) | |
| JAVA0141 | 0.00 | JAVA0141 Unnecessary modifier for method in interface | |
| JAVA0143 | 0.00 | JAVA0143 Synchronized method | |
| JAVA0144 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 871.00 | 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 | 0.00 | 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 | 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 | 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 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 0.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 0.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 0.00 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0274 | 0.00 | JAVA0274 Serializable class has a synchronized readObject() | |
| JAVA0275 | 0.00 | JAVA0275 Serializable class has a synchronized writeObject() and no other synchronized methods | |
| JAVA0276 | 0.00 | JAVA0276 Unnecessary use of String constructor | |
| JAVA0277 | 0.00 | JAVA0277 Iterator.next() implementation does not throw NoSuchElementException | |
| JAVA0278 | 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 | 2.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| JAVA0289 | 2.00 | null | |
| LINES | 435.00 | Number of lines in the source file | |
| LINE_COMMENT | 17.00 | Number of line comments | |
| LOC | 309.00 | Lines of code | |
| LOGICAL_LINES | 142.00 | Number of statements | |
| LOOPS | 5.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 622.00 | Number of operands | |
| OPERATORS | 1265.00 | Number of operators | |
| PARAMS | 8.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1887.00 | Halstead program length | |
| PROGRAM_VOCAB | 274.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 50.00 | Number of return points from functions | |
| SIZE | 10264.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 224.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 50.00 | Number of unique operators | |
| WHITESPACE | 69.00 | Number of whitespace lines | |