ProcessChain.java
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|---|---|---|
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edu.rice.cs.util |
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DrJava |
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 | |
|---|---|---|
| LINE_COMMENT | Number of line comments |  |
| DECL_COMMENTS | Comments in declarations | |
| EXEC_COMMENTS | Comments in executable code | |
| JAVA0020 | JAVA0020 Field name does not have required form | |
| JAVA0273 | JAVA0273 Non-final derivative of Thread calls start() in constructor | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0270 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| COMMENTS | Comment lines | |
| JAVA0128 | JAVA0128 Public constructor in non-public class | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| CYCLOMATIC | Cyclomatic complexity | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| COMPARISONS | Number of comparison operators | |
| JAVA0171 | JAVA0171 Unused local variable | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| SIZE | Size of the file in bytes | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| UNIQUE_OPERATORS | Number of unique operators | |
| WHITESPACE | Number of whitespace lines | |
| PARAMS | Number of formal parameter declarations | |
| RETURNS | Number of return points from functions | |
| LOC | Lines of code | |
| ELOC | Effective lines of code | |
| FUNCTIONS | Number of function declarations | |
| OPERANDS | Number of operands | |
| PROGRAM_LENGTH | Halstead program length | |
| OPERATORS | Number of operators | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/*BEGIN_COPYRIGHT_BLOCK
*
* Copyright (c) 2001-2008, JavaPLT group at Rice University (drjava@rice.edu)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the names of DrJava, the JavaPLT group, Rice University, nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software is Open Source Initiative approved Open Source Software.
* Open Source Initative Approved is a trademark of the Open Source Initiative.
*
* This file is part of DrJava. Download the current version of this project
* from http://www.drjava.org/ or http://sourceforge.net/projects/drjava/
*
* END_COPYRIGHT_BLOCK*/
package edu.rice.cs.util;
import java.io.*;
import java.util.Set;
import java.util.HashSet;
import edu.rice.cs.drjava.ui.DrJavaErrorHandler;
/**
* This class represents a piping chain of processes, in which the output of the first
* process is piped into the input of the second process, and so on. The class allows
* the entire chain to be treated as if it were just one process.
* The constructor also sets up the input and output streams of the individual processes
* so they can function as a chain.
*/
public class ProcessChain extends Process {
/** Separator used between different process chains. */
public static final char PROCESS_SEPARATOR_CHAR = '#';
/** Separator used between different process chains. */
public static final String PROCESS_SEPARATOR = String.valueOf(PROCESS_SEPARATOR_CHAR);
/** Separator used between processes inside the same process chain. */
public static final char PIPE_SEPARATOR_CHAR = '|';
/** Separator used between processes inside the same process chain. */
public static final String PIPE_SEPARATOR = String.valueOf(PIPE_SEPARATOR_CHAR);
/** The process creators that create the processes in this process chain. */
protected ProcessCreator[] _creators;
/** The processes inside this piping chain. */
protected Process[] _processes;
/** True when execution of this chain has been aborted. */
protected boolean _aborted = false;
/** The redirector threads that move output (both stdout and stderr) from one process
* to the input of the next process. */
protected Set<StreamRedirectThread> _redirectors = new HashSet<StreamRedirectThread>();
/** The combined input stream of all processes. */
protected PipedInputStream _combinedInputStream;
/** The stream into which all outputs to stdout are written. */
protected PipedOutputStream _combinedStdOutStream;
/** The combined error stream of all processes. */
protected PipedInputStream _combinedErrorStream;
/** The stream into which all outputs to stderr are written. */
protected PipedOutputStream _combinedStdErrStream;
/** Threads that wait for the subprocesses to terminate. */
// protected Thread[] _deathThreads;
/** Constructor for a process chain consisting of the individual processes provided.
* @param pcs array of ProcessCreators */
public ProcessChain(ProcessCreator[] pcs) {
_creators = pcs;
_processes = new Process[_creators.length];
_combinedInputStream = new PipedInputStream();
try {
_combinedStdOutStream = new PipedOutputStream(_combinedInputStream);
_combinedInputStream.connect(_combinedStdOutStream);
}
catch(IOException e) { /* ignore, no output if this goes wrong */ }
_combinedErrorStream = new PipedInputStream();
try {
_combinedStdErrStream = new PipedOutputStream(_combinedErrorStream);
_combinedErrorStream.connect(_combinedStdErrStream);
}
catch(IOException e) { /* ignore, no output if this goes wrong */ }
// _deathThreads = new Thread[_creators.length];
for(int i=0; i<_processes.length; ++i) {
final int index = i;
try {
_processes[i] = _creators[i].start();
// _deathThreads[i] = new Thread(new Runnable() {
// public void run() {
// boolean interrupted = false;
// do {
// interrupted = false;
// try {
// _processes[index].waitFor();
// }
// catch(InterruptedException e) { interrupted = true; }
// } while(interrupted);
// GeneralProcessCreator.LOG.log("Process "+index+" has terminated");
// }
// });
// _deathThreads[i].start();
}
catch(IOException e) {
_aborted = true;
destroy();
return;
}
}
for(int i=0; i<_processes.length-1; ++i) {
// _processes.length-1 because we're processing the gaps between the processes:
// (P0 P1 P2) has two gaps: P0-P1 and P1-P2. There's always one less gap than processes.
StreamRedirectThread r = new StreamRedirectThread("stdout Redirector "+i,
_processes[i].getInputStream(),
_processes[i+1].getOutputStream(),
new ProcessChainThreadGroup(this));
_redirectors.add(r);
r.start();
r = new StreamRedirectThread("stderr Redirector "+i,
_processes[i].getErrorStream(),
_processes[i+1].getOutputStream(),
new ProcessChainThreadGroup(this));
_redirectors.add(r);
r.start();
}
// now pipe output from the last process into our output streams
StreamRedirectThread r = new StreamRedirectThread("stdout Redirector "+(_processes.length-1),
_processes[_processes.length-1].getInputStream(),
_combinedStdOutStream,
new ProcessChainThreadGroup(this));
_redirectors.add(r);
r.start();
r = new StreamRedirectThread("stderr Redirector "+(_processes.length-1),
_processes[_processes.length-1].getErrorStream(),
_combinedStdErrStream,
new ProcessChainThreadGroup(this));
_redirectors.add(r);
r.start();
}
// /**
// * Gets the output stream of the process chain, i.e. the output
// * stream of the first process in the chain.
// *
// * @return the output stream of the process chain.
// */
// public OutputStream getOutputStream() {
// if (_aborted) {
// return new OutputStream() {
// public void write(int b) throws IOException { }
// };
// }
// return _processes[0].getOutputStream();
// }
//
// /**
// * Gets the error stream of the process chain, i.e. the error
// * stream of the last process in the chain.
// *
// * @return the error stream of the process chain.
// */
// public InputStream getErrorStream() {
// if (_aborted) {
// return new InputStream() {
// public int read() throws IOException { return -1; }
// };
// }
// return _processes[_processes.length-1].getErrorStream();
// }
//
// /**
// * Gets the input stream of the process chain, i.e. the input
// * stream of the first process in the chain.
// *
// * @return the input stream of the process chain
// */
// public InputStream getInputStream() {
// if (_aborted) {
// return new InputStream() {
// public int read() throws IOException { return -1; }
// };
// }
// return _processes[_processes.length-1].getInputStream();
// }
/**
* Gets the output stream of the process sequence, i.e. the combined
* output stream of all the processes in the sequence.
*
* @return the output stream of the process sequence.
*/
public OutputStream getOutputStream() {
if (_aborted) {
return new OutputStream() {
public void write(int b) throws IOException { }
};
}
else {
return new BufferedOutputStream(_processes[0].getOutputStream());
}
}
/**
* Gets the error stream of the process sequence, i.e. the combined
* error stream of all the processes in the sequence.
*
* @return the error stream of the process sequence.
*/
public InputStream getErrorStream() {
return _combinedErrorStream;
}
/**
* Gets the input stream of the process sequence, i.e. the combined
* input stream of all the processes in the sequence.
*
* @return the input stream of the process chain
*/
public InputStream getInputStream() {
return _combinedInputStream;
}
/**
* Causes the current thread to wait, if necessary, until the
* process chain has terminated, i.e. until all processes in the
* chain have terminated. This method returns immediately if
* all subprocesses have already terminated. If any of the
* subprocess has not yet terminated, the calling thread will be
* blocked until all subprocesses exit.
*
* @return the exit value of the process chain, i.e. the
* exit code of the last process in the chain.
* @exception InterruptedException if the current thread is
* {@link Thread#interrupt() interrupted} by another thread
* while it is waiting, then the wait is ended and an
* {@link InterruptedException} is thrown.
*/
public int waitFor() throws InterruptedException {
if (_aborted) { return -1; }
int exitCode = 0;
for(int i=0; i<_processes.length; ++i) {
exitCode = _processes[i].waitFor();
// if (i<_processes.length-1) {
// _stdOutRedirectors.get(i).setStopFlag();
// _stdErrRedirectors.get(i).setStopFlag();
// }
// try {
// _processes[i].getInputStream().close();
// _processes[i].getErrorStream().close();
// if (i<_processes.length-1) {
// _processes[i+1].getOutputStream().close();
// }
// }
// catch(IOException e) { /* ignore, just don't close streams */ }
}
// stopAllRedirectors();
return exitCode;
}
/**
* Returns the exit value for the subprocess.
*
* @return the exit value of the subprocess represented by this
* <code>Process</code> object. by convention, the value
* <code>0</code> indicates normal termination.
* @exception IllegalThreadStateException if the subprocess represented
* by this <code>Process</code> object has not yet terminated.
*/
public int exitValue() {
if (_aborted) { return -1; }
int exitCode = 0;
// executing this loop guarantees that the IllegalThreadStateException
// is thrown when at least one thread has not terminated yet.
// just returning the exit value of the last process is not sufficient:
// the last process could have terminated while other processes have not.
for(int i=0; i<_processes.length; ++i) {
exitCode = _processes[i].exitValue();
}
return exitCode;
}
/**
* Kills all subprocesses. The subprocesses represented by this
* <code>ProcessChain</code> object is forcibly terminated.
*/
public void destroy() {
_aborted = true;
for(int i=0; i<_processes.length; ++i) {
_processes[i].destroy();
}
stopAllRedirectors();
}
/** Set the stop flags for all redirector threads. */
protected void stopAllRedirectors() {
for(StreamRedirectThread r: _redirectors) { r.setStopFlag(); }
_redirectors.clear();
}
/** Thread group for all threads that deal with this process sequence. */
protected class ProcessChainThreadGroup extends ThreadGroup {
private ProcessChain _chain;
private PrintWriter _errOut;
public ProcessChainThreadGroup(ProcessChain chain) {
super("Process Chain Thread Group");
_chain = chain;
_errOut = new PrintWriter(new OutputStreamWriter(_chain._combinedStdErrStream));
}
public void uncaughtException(Thread t, Throwable e) {
destroy();
if ((e instanceof StreamRedirectException) &&
(e.getCause() instanceof java.io.IOException)) {
_errOut.println("\n\n\nAn exception occurred during the execution of the command line:\n"+
e.toString()+"\n\n");
}
else {
DrJavaErrorHandler.record(e);
}
}
}
}
The table below shows all metrics for ProcessChain.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 29.00 | Number of blocks | |
| BLOCK_COMMENT | 35.00 | Number of block comment lines | |
| COMMENTS | 186.00 | Comment lines | |
| COMMENT_DENSITY | 1.69 | Comment density | |
| COMPARISONS | 6.00 | Number of comparison operators | |
| CYCLOMATIC | 24.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 69.00 | Comments in declarations | |
| DOC_COMMENT | 71.00 | Number of javadoc comment lines | |
| ELOC | 110.00 | Effective lines of code | |
| EXEC_COMMENTS | 31.00 | Comments in executable code | |
| EXITS | 20.00 | Procedure exits | |
| FUNCTIONS | 11.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 61.09 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 21.00 | 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 | 0.00 | 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 | 10.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 0.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 0.00 | JAVA0035 Missing braces in for statement | |
| JAVA0036 | 0.00 | JAVA0036 Missing braces in while statement | |
| JAVA0038 | 0.00 | JAVA0038 Non-case label in switch statement | |
| JAVA0039 | 0.00 | JAVA0039 Break statement with label | |
| JAVA0040 | 0.00 | JAVA0040 Switch statement contains N cases (maximum: M) | |
| JAVA0041 | 0.00 | JAVA0041 Nested synchronized block | |
| JAVA0042 | 0.00 | JAVA0042 Empty synchronized statement | |
| JAVA0043 | 0.00 | JAVA0043 Inner class does not use outer class | |
| JAVA0044 | 0.00 | JAVA0044 Serializable class with no instance variables | |
| JAVA0045 | 0.00 | JAVA0045 Serializable class with only transient fields | |
| JAVA0046 | 0.00 | JAVA0046 Name of class not derived from Exception ends with 'Exception' | |
| JAVA0047 | 0.00 | JAVA0047 Serializable class derives from invalid base class | |
| JAVA0048 | 0.00 | JAVA0048 Name of class derived from Exception does not end with 'Exception' | |
| JAVA0049 | 0.00 | JAVA0049 Nested block at depth N (maximum: M) | |
| JAVA0050 | 0.00 | JAVA0050 Class derives from java.lang.Error | |
| JAVA0051 | 0.00 | JAVA0051 Class derives from java.lang.RuntimeException | |
| JAVA0052 | 0.00 | JAVA0052 Class derives from java.lang.Throwable | |
| JAVA0053 | 0.00 | JAVA0053 Unused label | |
| JAVA0054 | 0.00 | JAVA0054 Inheritance depth N exceeds maximum M | |
| JAVA0055 | 0.00 | JAVA0055 Class should be interface | |
| JAVA0056 | 0.00 | JAVA0056 Unnecessary abstract modifier for interface or annotation | |
| JAVA0057 | 0.00 | JAVA0057 Unnecessary default constructor | |
| JAVA0058 | 0.00 | JAVA0058 Constructor calls super() | |
| JAVA0059 | 0.00 | JAVA0059 Method override only calls super() | |
| JAVA0061 | 0.00 | JAVA0061 Inaccessible member in anonymous class | |
| JAVA0062 | 0.00 | JAVA0062 Public class missing public member or protected constructor | |
| JAVA0063 | 0.00 | JAVA0063 Identifier name should not contain '$' | |
| JAVA0064 | 0.00 | JAVA0064 N variations of identifier name (maximum: M) | |
| JAVA0065 | 0.00 | JAVA0065 Unnecessary final modifier for method in final class | |
| JAVA0066 | 0.00 | JAVA0066 Unnecessary modifier for interface nested type | |
| JAVA0067 | 0.00 | JAVA0067 Array descriptor on identifier name | |
| JAVA0068 | 0.00 | JAVA0068 Modifiers not declared in recommended order | |
| JAVA0071 | 0.00 | JAVA0071 Strings compared with == | |
| JAVA0073 | 0.00 | JAVA0073 Integer division in floating-point context | |
| JAVA0074 | 0.00 | JAVA0074 Use of Object.notify() | |
| JAVA0075 | 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 | 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 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 1.00 | 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 | 1.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 0.00 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0131 | 0.00 | JAVA0131 Compatible method does not override base | |
| JAVA0132 | 0.00 | JAVA0132 Method overload with compatible signature | |
| JAVA0133 | 0.00 | JAVA0133 Non-synchronized method overrides synchronized method | |
| JAVA0135 | 0.00 | JAVA0135 Only one of Object.equals and Object.hashCode defined: missing 'method' | |
| JAVA0136 | 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 | 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 | 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 | 1.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 0.00 | JAVA0259 Return of collection/array field | |
| JAVA0260 | 0.00 | JAVA0260 Use 'enum' instead of Enumerated Type pattern | |
| JAVA0261 | 0.00 | JAVA0261 Use specialized Enum collection types | |
| JAVA0262 | 0.00 | JAVA0262 Use of char in integer context | |
| JAVA0263 | 0.00 | JAVA0263 Long literal ends with 'l' instead of 'L' | |
| JAVA0264 | 0.00 | JAVA0264 Integer math in long context - check for overflow | |
| JAVA0265 | 0.00 | JAVA0265 Use of Throwable.printStackTrace() | |
| JAVA0266 | 0.00 | JAVA0266 Use of System.out | |
| JAVA0267 | 0.00 | JAVA0267 Use of System.err | |
| JAVA0269 | 0.00 | JAVA0269 Contents of StringBuffer never used | |
| JAVA0270 | 3.00 | JAVA0270 Use Java 5.0 enhanced for loop construct to iterate over all elements in an array | |
| JAVA0271 | 0.00 | JAVA0271 Minimize use of on-demand (.*) static imports | |
| JAVA0272 | 0.00 | JAVA0272 Thread.run() called | |
| JAVA0273 | 4.00 | 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 | 351.00 | Number of lines in the source file | |
| LINE_COMMENT | 80.00 | Number of line comments | |
| LOC | 135.00 | Lines of code | |
| LOGICAL_LINES | 77.00 | Number of statements | |
| LOOPS | 5.00 | Number of loops | |
| NEST_DEPTH | 3.00 | Maximum nesting depth | |
| OPERANDS | 286.00 | Number of operands | |
| OPERATORS | 581.00 | Number of operators | |
| PARAMS | 5.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 867.00 | Halstead program length | |
| PROGRAM_VOCAB | 147.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 16.00 | Number of return points from functions | |
| SIZE | 14013.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 103.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 44.00 | Number of unique operators | |
| WHITESPACE | 30.00 | Number of whitespace lines | |