ExternalProcessPanel.java
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|---|---|---|
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edu.rice.cs.drjava.ui |
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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 | |
|---|---|---|
| EXEC_COMMENTS | Comments in executable code |  |
| LINE_COMMENT | Number of line comments | |
| JAVA0020 | JAVA0020 Field name does not have required form | |
| COMPARISONS | Number of comparison operators | |
| CYCLOMATIC | Cyclomatic complexity | |
| BLOCKS | Number of blocks | |
| OPERATORS | Number of operators | |
| EXITS | Procedure exits | |
| PROGRAM_LENGTH | Halstead program length | |
| SIZE | Size of the file in bytes | |
| LOOPS | Number of loops | |
| LOGICAL_LINES | Number of statements | |
| JAVA0049 | JAVA0049 Nested block at depth N (maximum: M) | |
| OPERANDS | Number of operands | |
| ELOC | Effective lines of code | |
| UNIQUE_OPERANDS | Number of unique operands | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| LOC | Lines of code | |
| NEST_DEPTH | Maximum nesting depth | |
| JAVA0171 | JAVA0171 Unused local variable | |
| JAVA0080 | JAVA0080 Import declaration not used | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| FUNCTIONS | Number of function declarations | |
| JAVA0166 | JAVA0166 Generic exception caught | |
| LINES | Number of lines in the source file | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| JAVA0013 | JAVA0013 Non-blank final field is not static | |
| UNIQUE_OPERATORS | Number of unique operators | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0087 | JAVA0087 Use of Thread.sleep() | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0173 | JAVA0173 Unused method parameter | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| WHITESPACE | Number of whitespace lines | |
| RETURNS | Number of return points from functions | |
| DOC_COMMENT | Number of javadoc comment lines | |
| JAVA0130 | JAVA0130 Non-static method does not use instance fields | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| 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.drjava.ui;
import java.awt.*;
import java.awt.event.*;
import java.awt.font.*;
import java.io.*;
import java.util.List;
import java.util.ArrayList;
import java.util.LinkedList;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.tree.*;
import javax.swing.table.*;
import javax.swing.text.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.BasicToolTipUI;
import edu.rice.cs.drjava.config.*;
import edu.rice.cs.util.swing.Utilities;
import edu.rice.cs.util.ProcessCreator;
import edu.rice.cs.drjava.model.SingleDisplayModel;
import edu.rice.cs.drjava.ui.predictive.*;
import edu.rice.cs.drjava.model.OpenDefinitionsDocument;
import edu.rice.cs.util.FileOps;
import edu.rice.cs.plt.concurrent.CompletionMonitor;
import static edu.rice.cs.drjava.ui.MainFrame.GoToFileListEntry;
/** Panel for displaying some component with buttons, one of which is an "Abort" button.
* This should be used to display the output of an external process.
* This class is a swing class that should only be accessed from the event thread.
* @version $Id$
*/
public class ExternalProcessPanel extends AbortablePanel {
/** Size of the buffer read at once. */
public final int BUFFER_SIZE = 10240;
/** Number of buffer reads before the event thread is allowed to do something else. */
public final int BUFFER_READS_PER_TIMER = 5;
protected JTextArea _textArea;
protected ProcessCreator _pc = null;
protected Process _p = null;
protected InputStreamReader _is = null;
protected InputStreamReader _erris = null;
protected JButton _updateNowButton;
protected JButton _runAgainButton;
protected Thread _updateThread;
protected Thread _readThread;
protected Thread _deathThread;
protected StringBuilder _sb = new StringBuilder();
protected volatile int _changeCount = 0;
private char[] _buf = new char[BUFFER_SIZE];
private int _red = -1;
private char[] _errbuf = new char[BUFFER_SIZE];
private int _errred = -1;
private int _retVal;
private String _header;
protected CompletionMonitor _abortMonitor = new CompletionMonitor();
/** Constructs a new "process" panel to watch process output.
* This is swing view class and hence should only be accessed from the event thread.
* @param frame the MainFrame
* @param title title of the pane
* @param pc the process creator to use
*/
public ExternalProcessPanel(MainFrame frame, String title, ProcessCreator pc) {
super(frame, title);
_sb = new StringBuilder("Command line: ");
_sb.append(pc.cmdline());
_sb.append('\n');
_header = _sb.toString();
_textArea.setText(_header);
initThread(pc);
_textArea.addMouseListener(new MouseListener() {
public void mouseClicked(MouseEvent e) {
if ((SwingUtilities.isLeftMouseButton(e)) &&
(e.getClickCount()==2)) {
doubleClicked(e);
}
}
public void mouseEntered(MouseEvent e) { }
public void mouseExited(MouseEvent e) { }
public void mousePressed(MouseEvent e) { }
public void mouseReleased(MouseEvent e) { }
});
EventQueue.invokeLater(new Runnable() {
public void run() { updateText(); } });
// MainFrame.LOG.log("\tProcessPanel ctor done");
}
protected void initThread(ProcessCreator pc) {
_abortMonitor.reset();
// MainFrame.LOG.log("\tProcessPanel ctor");
try {
_pc = pc;
_pc.getPropertyMaps().clearVariables();
_readThread = new Thread(new Runnable() {
public void run() {
while((_is!=null) || (_erris!=null)) {
readText(false);
}
}
},"External Process Read Thread");
_updateThread = new Thread(new Runnable() {
public void run() {
while((_is!=null) || (_erris!=null)) {
try {
Thread.sleep(edu.rice.cs.drjava.DrJava.getConfig().
getSetting(edu.rice.cs.drjava.config.OptionConstants.FOLLOW_FILE_DELAY));
}
catch(InterruptedException ie) { /* ignore */ }
updateText();
}
}
},"External Process Update Thread");
_p = _pc.start();
_sb.append("Evaluated command line: ");
_sb.append(_pc.evaluatedCommandLine());
_sb.append('\n');
_is = new InputStreamReader(_p.getInputStream());
_erris = new InputStreamReader(_p.getErrorStream());
_readThread.start();
_updateThread.start();
_updateNowButton.setEnabled(true);
_deathThread = new Thread(new Runnable() {
public void run() {
try {
_retVal = _p.waitFor();
Utilities.invokeLater(new Runnable() {
public void run() {
_sb.append("\n\nProcess returned ");
_sb.append(_retVal);
_sb.append("\n");
_textArea.setText(_sb.toString());
}
});
}
catch(InterruptedException e) {
Utilities.invokeLater(new Runnable() {
public void run() {
_p.destroy();
_sb.append("\n\nProcess returned ");
_sb.append(_retVal);
_sb.append("\n");
_textArea.setText(_sb.toString());
}
});
}
finally {
abortActionPerformed(null);
}
}
},"External Process Death Thread");
_deathThread.start();
// MainFrame.LOG.log("\tUpdate thread started");
}
catch(Exception e) {
_sb.append("\n\nException from process:\n"+e.toString());
_textArea.setText(_sb.toString());
edu.rice.cs.util.GeneralProcessCreator.LOG.log(_sb.toString());
abortActionPerformed(null);
}
}
/** Setup left panel. Must be overridden to return the component on the left side. */
protected Component makeLeftPanel() {
_textArea = new JTextArea();
_textArea.setEditable(false);
return _textArea;
}
/** Abort action was performed.
* @param e action event performed by user, or null if aborted due to problem */
protected void abortActionPerformed(ActionEvent e) {
_abortButton.setEnabled(false);
_updateNowButton.setEnabled(false);
_runAgainButton.setEnabled(false);
// spin this off in a separate thread so the event thread is free
new Thread(new Runnable() {
public void run() {
if (_is!=null) {
try {
_is.close();
}
catch(IOException ioe) { /* ignore, just stop polling */ }
_is = null;
Utilities.invokeLater(new Runnable() { public void run() { updateButtons(); } });
}
if (_erris!=null) {
try {
_erris.close();
}
catch(IOException ioe) { /* ignore, just stop polling */ }
_erris = null;
Utilities.invokeLater(new Runnable() { public void run() { updateButtons(); } });
}
if (_p!=null) {
_p.destroy();
_p = null;
}
Utilities.invokeLater(new Runnable() { public void run() { updateText(); updateButtons(); } });
_abortMonitor.signal();
}
}).start();
}
/** Run Again action was performed
* @param e action event performed by user, or null if initiated programmatically */
protected void runAgainActionPerformed(ActionEvent e) {
_abortButton.setEnabled(false);
_updateNowButton.setEnabled(false);
_runAgainButton.setEnabled(false);
abortActionPerformed(e);
// spin this off in a separate thread so the event thread is free
new Thread(new Runnable() {
public void run() {
while(!_abortMonitor.attemptEnsureSignalled()) { } // wait for the abortActionPerformed() call to finish
_abortMonitor.reset();
_sb = new StringBuilder("Command line:");
_sb.append(_pc.cmdline());
_sb.append('\n');
_header = _sb.toString();
initThread(_pc);
EventQueue.invokeLater(new Runnable() {
public void run() {
_textArea.setText(_header);
updateText();
} });
}
}).start();
}
// public static edu.rice.cs.util.Log LOG = new edu.rice.cs.util.Log("external.txt",true);
/** Gets called when the user double-clicks on the text pane. */
public void doubleClicked(MouseEvent e) {
// LOG.log("doubleClicked");
final String t = _textArea.getText();
int caret = _textArea.getCaretPosition();
int start = caret;
int end = start;
while((start-1>0) && (t.charAt(start-1)!='\n')) { --start; }
while((end>=0) && (end<t.length()) && (t.charAt(end)!='\n')) { ++end; }
// LOG.log("\tstart="+start+"\n\tend="+end);
if ((start<0) || (end<0) || (start>=t.length()) || (end>=t.length())) return;
final String line = t.substring(start,end);
// LOG.log("\t'"+line+"'");
caret -= start; // calculate caret position within the line
if (caret>=line.length()) { caret = line.length()-1; }
start = end = caret;
char ch;
while((end>=0) && (end<line.length())) {
ch = line.charAt(end);
if (ch==':') {
if ((end+1<line.length()) && (Character.isDigit(line.charAt(end+1)))) {
// perhaps a colon followed by a line number: Foo.java:10
// advance to the end of the number, then break
do {
++end;
} while((end<line.length()) && (Character.isDigit(line.charAt(end))));
break;
}
else {
// colon without digit behind it, break here
break;
}
}
else if (Character.isJavaIdentifierPart(ch)) {
// character is a Java identifier part, advance
++end;
}
else if ((ch=='.') || (ch==File.separatorChar)) {
// allow the period and file separator, could be the part of file name; advance
++end;
}
else {
// character should not be in a Java name, break here
break;
}
}
List<OpenDefinitionsDocument> docs = _model.getOpenDefinitionsDocuments();
if ((docs == null) || (docs.size() == 0)) return; // do nothing
ArrayList<GoToFileListEntry> list;
list = new ArrayList<GoToFileListEntry>(docs.size());
// create a list with fully qualified class names
for(OpenDefinitionsDocument d: docs) {
// LOG.log("Doc: "+d);
try {
String fullyQualified = d.getPackageName() + "." + d.toString();
if (fullyQualified.startsWith(".")) { fullyQualified = fullyQualified.substring(1); }
list.add(new GoToFileListEntry(d, fullyQualified));
// LOG.log("\tname: "+fullyQualified);
}
catch(IllegalStateException ex) { /* ignore */ }
}
PredictiveInputModel<GoToFileListEntry> pim =
new PredictiveInputModel<GoToFileListEntry>(true, new PredictiveInputModel.PrefixLineNumStrategy<GoToFileListEntry>(), list);
GoToFileListEntry uniqueMatch = null;
String name, oldName = null, simpleName = null;
while(start>0) {
ch = line.charAt(start);
while(start>0) {
ch = line.charAt(start);
if ((ch==':') || (ch=='.') || (Character.isJavaIdentifierPart(ch))) { --start; } else { break; }
}
// LOG.log("\tstart="+start+"\n\tend="+end);
if ((start>=0) && (end>=start) && (start<line.length()) && (end<line.length())) {
name = line.substring(start,end).replace(File.separatorChar,'.');
if ((name.length()>0) && (!Character.isJavaIdentifierPart(name.charAt(0)))) { name = name.substring(1); }
if (simpleName==null) { simpleName = name; }
if (name.equals(oldName)) { break; }
if ((name.indexOf(".java")>=0) ||
(name.indexOf(".j")>=0) ||
(name.indexOf(".dj0")>=0) ||
(name.indexOf(".dj1")>=0) ||
(name.indexOf(".dj2")>=0)) {
// LOG.log("\t--> '"+name+"'");
uniqueMatch = getUniqueMatch(name, pim);
if (uniqueMatch!=null) {
// unique match found, go there
// LOG.log("\t ^^^^^^^^^^ unique match found");
final OpenDefinitionsDocument newDoc = pim.getCurrentItem().doc;
final boolean docChanged = ! newDoc.equals(_model.getActiveDocument());
final boolean docSwitch = _model.getActiveDocument() != newDoc;
if (docSwitch) _model.setActiveDocument(newDoc);
final int curLine = newDoc.getCurrentLine();
final int last = name.lastIndexOf(':');
if (last >= 0) {
try {
String nend = name.substring(last + 1);
int val = Integer.parseInt(nend);
final int lineNum = Math.max(1, val);
Runnable command = new Runnable() {
public void run() {
try { _frame._jumpToLine(lineNum); } // adds this region to browser history
catch (RuntimeException ex) { _frame._jumpToLine(curLine); }
}
};
if (docSwitch) {
// postpone running command until after document switch, which is pending in the event queue
EventQueue.invokeLater(command);
}
else command.run();
}
catch(RuntimeException ex) { /* ignore */ }
}
else if (docChanged) {
// defer executing this code until after active document switch (if any) is complete
EventQueue.invokeLater(new Runnable() { public void run() { _frame.addToBrowserHistory(); } });
}
break;
}
}
oldName = name;
}
else {
break;
}
if (ch==File.separatorChar) { --start; } // file separator ('/' or '\'), include preceding directory
}
if (uniqueMatch==null) {
// couldn't find a unique match, even after gradually including the fully qualified name
_frame.gotoFileMatchingMask(simpleName);
}
}
/** Return the unique match for the mask, or null if no match found or not unique.
* @param mask word specifying the file to go to
* @param pim predictive input model with possible matches
* @return unique match, or null if no match found or not unique */
GoToFileListEntry getUniqueMatch(String mask, PredictiveInputModel<GoToFileListEntry> pim) {
pim.setMask(mask);
if (pim.getMatchingItems().size() == 1) {
// exactly one match, go to file
if (pim.getCurrentItem() != null) { return pim.getCurrentItem(); }
}
return null;
}
/** Update button state and text. Should be overridden if additional buttons are added besides "Go To", "Remove" and "Remove All". */
protected void updateButtons() {
boolean ended = true;
if (_p!=null) {
try {
// try to get exitValue() to see if process has terminated; exit value is not otherwise important
int ignored = _p.exitValue();
// if no exception is thrown, then the process has finished
ended = true;
}
catch(IllegalThreadStateException e) {
// process has NOT finished yet
ended = false;
}
}
_abortButton.setEnabled((_is!=null) && (_erris!=null) && (!ended));
_updateNowButton.setEnabled((_is!=null) && (_erris!=null) && (!ended));
_runAgainButton.setEnabled((_is==null) || (_erris==null) || (ended));
}
/** Creates the buttons for controlling the regions. Should be overridden. */
protected JComponent[] makeButtons() {
_updateNowButton = new JButton("Update");
_updateNowButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
EventQueue.invokeLater(new Runnable() { public void run() { updateText(); } }); }
});
_runAgainButton = new JButton("Run Again");
_runAgainButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
runAgainActionPerformed(e);
}
});
return new JComponent[] { _updateNowButton, _runAgainButton };
}
/** Read new text from the stream.
* @param finish whether to read the entire rest */
protected void readText(final boolean finish) {
// MainFrame.LOG.log("readText");
if (((_is!=null) || (_erris!=null))) {
_changeCount = 0;
// MainFrame.LOG.log("\tgot text");
try {
// MainFrame.LOG.log("\treading...");
// abort after reading 5 blocks (50 kB), read more later
// don't block the event thread any longer
while((_is!=null) &&
(_erris!=null) &&
(_changeCount<=BUFFER_READS_PER_TIMER) &&
(_erris!=null) &&
((_red = _is.read(_buf))>=0)) {
// MainFrame.LOG.log("\tread "+_red+" bytes");
_sb.append(new String(_buf, 0, _red));
if (finish) { _changeCount = 1; } else { ++_changeCount; }
}
while((_changeCount<=BUFFER_READS_PER_TIMER) &&
(_erris!=null) &&
((_errred = _erris.read(_errbuf))>=0)) {
// MainFrame.LOG.log("\tread "+_red+" bytes");
_sb.append(new String(_errbuf, 0, _errred));
if (finish) { _changeCount = 1; } else { ++_changeCount; }
}
if ((_red>0) && (_changeCount<BUFFER_READS_PER_TIMER)) {
_sb.append(new String(_buf, 0, _red));
if (finish) { _changeCount = 1; } else { ++_changeCount; }
}
if ((_errred>0) && (_changeCount<BUFFER_READS_PER_TIMER)) {
_sb.append(new String(_errbuf, 0, _errred));
if (finish) { _changeCount = 1; } else { ++_changeCount; }
}
if ((_p!=null) && (_is==null)) {
try {
// try to get exitValue() to see if process has terminated; exit value is not otherwise important
int ignored = _p.exitValue();
// if no exception is thrown, then the process has finished, and the stream may be null
}
catch(IllegalThreadStateException e) {
// process has NOT finished yet, but the stream is null; this is a problem
_sb.append("\nInput stream suddenly became null.");
}
}
if ((_p!=null) && (_erris==null)) {
try {
// try to get exitValue() to see if process has terminated; exit value is not otherwise important
int ignored = _p.exitValue();
// if no exception is thrown, then the process has finished, and the stream may be null
}
catch(IllegalThreadStateException e) {
// process has NOT finished yet, but the stream is null; this is a problem
_sb.append("\nError input stream suddenly became null.");
}
}
}
catch(IOException ioe) {
// MainFrame.LOG.log("\taborted");
// stop polling
if (_p!=null) {
try {
_p.exitValue();
// if we get here, process has finished, and we don't display the I/O exception
}
catch(IllegalThreadStateException e) {
// process has NOT finished yet, display the I/O exception
_sb.append("\n\nI/O Exception reading from process:\n"+ioe.toString());
edu.rice.cs.util.GeneralProcessCreator.LOG.log("\n\nI/O Exception reading from process:");
edu.rice.cs.util.GeneralProcessCreator.LOG.log(ioe.toString(),ioe);
}
}
if (finish) { _changeCount = 1; } else { ++_changeCount; }
abortActionPerformed(null);
}
}
}
/** Update the text area with the text that was read. */
protected void updateText() {
// MainFrame.LOG.log("updateText");
if (_updateNowButton.isEnabled()) {
// try {
// if ((_is!=null) && (_p!=null) &&
// (_is.ready()) &&
// (_p.getInputStream().available()>0)) { readText(false); }
// }
// catch(IOException ioe) {
// try {
// _p.exitValue();
// // if we get here, process has finished, and we don't display the I/O exception
// }
// catch(IllegalThreadStateException e) {
// // process has NOT finished yet, display the I/O exception
// _sb.append("\n\nI/O Exception reading from process\n");
// }
// abortActionPerformed(null);
// ++_changeCount;
// }
if (_changeCount>0) {
_changeCount = 0;
EventQueue.invokeLater(new Runnable() {
public void run() {
// MainFrame.LOG.log("\tsetting text");
_textArea.setText(_sb.toString());
int maxLines = edu.rice.cs.drjava.DrJava.getConfig().
getSetting(edu.rice.cs.drjava.config.OptionConstants.FOLLOW_FILE_LINES);
if (maxLines>0) { // if maxLines is 0, buffer is unlimited
try {
int start = 0;
int len = _textArea.getText().length();
int curLines = _textArea.getLineCount();
if (curLines>maxLines) {
start = _textArea.getLineStartOffset(curLines-maxLines);
len -= start;
_sb = new StringBuilder(_textArea.getText(start,len));
_textArea.setText(_sb.toString());
}
}
catch(javax.swing.text.BadLocationException e) { /* ignore, do not truncate */ }
}
// MainFrame.LOG.log("\ttext length = "+s.length());
}
});
}
// MainFrame.LOG.log("\tupdating buttons");
updateButtons();
}
}
}
The table below shows all metrics for ExternalProcessPanel.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 124.00 | Number of blocks | |
| BLOCK_COMMENT | 35.00 | Number of block comment lines | |
| COMMENTS | 130.00 | Comment lines | |
| COMMENT_DENSITY | 0.37 | Comment density | |
| COMPARISONS | 93.00 | Number of comparison operators | |
| CYCLOMATIC | 126.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 15.00 | Comments in declarations | |
| DOC_COMMENT | 28.00 | Number of javadoc comment lines | |
| ELOC | 352.00 | Effective lines of code | |
| EXEC_COMMENTS | 61.00 | Comments in executable code | |
| EXITS | 79.00 | Procedure exits | |
| FUNCTIONS | 34.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 94.40 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 54.00 | 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 | 2.00 | 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 | 19.00 | 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 | 4.00 | 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 | 4.00 | 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 | 9.00 | 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 | 1.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 0.00 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0110 | 2.00 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0111 | 0.00 | JAVA0111 Incorrect javadoc: @return tag for void method | |
| JAVA0112 | 0.00 | JAVA0112 Incorrect javadoc: no exception 'exception' in throws | |
| JAVA0113 | 1.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 0.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 0.00 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| JAVA0116 | 0.00 | JAVA0116 Missing javadoc: field 'field' | |
| JAVA0117 | 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 | 0.00 | JAVA0128 Public constructor in non-public class | |
| JAVA0130 | 1.00 | 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 | 3.00 | 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 | 3.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 1.00 | 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 | 3.00 | 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 | 1.00 | 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 | 0.00 | JAVA0287 Unnecessary null check | |
| JAVA0288 | 0.00 | JAVA0288 Inconsistent null check | |
| LINES | 586.00 | Number of lines in the source file | |
| LINE_COMMENT | 67.00 | Number of line comments | |
| LOC | 434.00 | Lines of code | |
| LOGICAL_LINES | 241.00 | Number of statements | |
| LOOPS | 11.00 | Number of loops | |
| NEST_DEPTH | 9.00 | Maximum nesting depth | |
| OPERANDS | 1023.00 | Number of operands | |
| OPERATORS | 2314.00 | Number of operators | |
| PARAMS | 17.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3337.00 | Halstead program length | |
| PROGRAM_VOCAB | 353.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 37.00 | Number of return points from functions | |
| SIZE | 23634.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 298.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 55.00 | Number of unique operators | |
| WHITESPACE | 22.00 | Number of whitespace lines | |