BrowserHistoryManager.java
| Index Score | ||
|---|---|---|
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edu.rice.cs.drjava.model |
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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 | |
|---|---|---|
| JAVA0034 | JAVA0034 Missing braces in if statement |  |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| DECL_COMMENTS | Comments in declarations | |
| JAVA0020 | JAVA0020 Field name does not have required form | |
| EXEC_COMMENTS | Comments in executable code | |
| LINE_COMMENT | Number of line comments | |
| JAVA0109 | JAVA0109 Incorrect javadoc: no parameter 'parameter' | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0080 | JAVA0080 Import declaration not used | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0035 | JAVA0035 Missing braces in for statement | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0171 | JAVA0171 Unused local variable | |
| JAVA0254 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| LOC | Lines of code | |
| ELOC | Effective lines of code | |
| WHITESPACE | Number of whitespace lines | |
| JAVA0018 | JAVA0018 Method name does not have required form | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
| LINES | Number of lines in the 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.model;
import java.awt.EventQueue;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;
import edu.rice.cs.plt.lambda.Lambda;
import edu.rice.cs.util.swing.Utilities;
/** Browser history manager for the entire model. Follows readers/writers locking protocol of EventNotifier. This
* history is simply a list together with a current pointer.
*/
public class BrowserHistoryManager extends EventNotifier<RegionManagerListener<BrowserDocumentRegion>> {
/** List of regions. Public operations are thread safe. */
private volatile TreeSet<BrowserDocumentRegion> _regions = new TreeSet<BrowserDocumentRegion>();
private volatile BrowserDocumentRegion _current = null;
private volatile int _maxSize;
/** Create a new ConcreteRegionManager with the specified maximum size.
* @param size maximum number of regions that can be stored in this manager.
*/
public BrowserHistoryManager(int size) { _maxSize = size; }
/** Create a new ConcreteRegionManager without maximum size. */
public BrowserHistoryManager() { this(0); }
/** Tests if specified region r is contained in this manager.
* @param r The region
* @return whether the manager contains region r
*/
// public boolean contains(DocumentRegion r) { return _regionSet.contains(r); }
// Not used
// private boolean equals(BrowserDocumentRegion r1, BrowserDocumentRegion r2) {
// return r1.getDocument() == r2.getDocument() && r1.getStartOffset() == r2.getStartOffset() &&
// r1.getEndOffset() == r2.getEndOffset();
// }
/** Add the supplied DocumentRegion r to the manager just above _current and set _current to refer to r. Only runs
* in event thread after initialization. Notifies regionAdded listeners if _currentIndex is changed. Assumes
* _regions.isEmpty() || _regions.contains(_current) and _regions.isEmpty() == (_current == null)
* @param region the DocumentRegion to be inserted into the manager
* @param index the index at which the DocumentRegion was inserted
*/
public void addBrowserRegion(final BrowserDocumentRegion r, final GlobalEventNotifier notifier) {
assert EventQueue.isDispatchThread();
// Utilities.show("addBrowserRegion(" + r + ") called with regions = " + _regions + " and current = " + _current);
if (_current != null) {
// flush the stack of regions above _current
// Utilities.show("Flushing elements above current = " + _current);
SortedSet<BrowserDocumentRegion> tail = _regions.tailSet(_current);
// Utilities.show("Tail set above current is " + tail);
Iterator<BrowserDocumentRegion> it = tail.iterator();
if (it.hasNext()) {
BrowserDocumentRegion nr = it.next(); // skip over current
assert nr == _current;
// Utilities.show("Skipped " + nr);
}
while (it.hasNext()) {
BrowserDocumentRegion nr = it.next();
it.remove();
// Utilities.show("Removed " + nr + ", leaving " + _regions);
}
}
// Utilities.show("Before adding, regions = " + _regions);
_current = r;
_regions.add(r);
r.getDocument().addBrowserRegion(r);
// Notify listeners of this event
Utilities.invokeLater(new Runnable() {
public void run() {
_lock.startRead();
try { for (RegionManagerListener<BrowserDocumentRegion> l: _listeners) { l.regionAdded(r); } }
finally { _lock.endRead(); }
}
});
// remove a region if necessary
shrinkManager();
notifier.browserChanged();
}
/** Remove regions if there are more than the maximum number allowed. Typically used to remove one region. */
private void shrinkManager() {
if (_maxSize > 0) {
int size = _regions.size();
int diff = size - _maxSize;
for (int i = 0; i < diff; ++i) remove(_regions.first());
}
}
/** Remove the given DocumentRegion from the manager.
* @param region the DocumentRegion to be removed.
*/
public /* synchronized */ void remove(final BrowserDocumentRegion r) {
OpenDefinitionsDocument doc = r.getDocument();
_regions.remove(r);
doc.removeBrowserRegion(r);
_current = next(r);
}
/** @return the region immediately higher than r and last (highest) if no higher region exists). */
private BrowserDocumentRegion next(BrowserDocumentRegion r) {
BrowserDocumentRegion next = _higher(_regions, r);
if (next == null && ! _regions.isEmpty()) next = _regions.last();
return next;
}
/** @return an ArrayList<DocumentRegion> containing the DocumentRegion objects in this mangager. */
public SortedSet<BrowserDocumentRegion> getRegions() { return _regions; }
/** Tells the manager to remove all regions. */
public /* synchronized */ void clearBrowserRegions() {
_current = null;
_regions.clear();
}
/** @return the current region or null if none selected */
public BrowserDocumentRegion getCurrentRegion() { return _current; }
/** @return true if the current region is the first in the list, i.e. prevCurrentRegion is without effect */
public /* synchronized */ boolean isCurrentRegionFirst() { return (! _regions.isEmpty()) && _current == _regions.first(); }
/** @return true if the current region is the last in the list, i.e. nextCurrentRegion is without effect */
public /* synchronized */ boolean isCurrentRegionLast() { return (! _regions.isEmpty()) && _current == _regions.last(); }
/** Set the current region.
* @param index the index of the new current region, may be -1. */
public void setCurrentRegion(BrowserDocumentRegion r) { _current = r; }
/** Make the region that is more recent the current region. If _current is null, set it to refer to first.
* @return new current region */
public /* synchronized */ BrowserDocumentRegion nextCurrentRegion(final GlobalEventNotifier notifier) {
// Utilities.show("nextCurrentRegion called with regions = " + _regions + " and _current = " + _current);
if (_regions.isEmpty()) return null;
if (_current == null) _current = _regions.first();
else _current = _higher(_regions, _current);
notifier.browserChanged();
return _current;
}
/** Make the region that is less recent the current region. If _current is null, set it to refer to last.
* @return new current region */
public /* synchronized */ BrowserDocumentRegion prevCurrentRegion(final GlobalEventNotifier notifier) {
// Utilities.show("prevCurrentRegion called with regions = " + _regions + " and _current = " + _current);
if (_regions.isEmpty()) return null;
if (_current == null) _current = _regions.last();
else _current = _lower(_regions, _current);
// Utilities.show("returning " + _current);
notifier.browserChanged();
return _current;
}
/** @return the highest region (using compareTo) <= r; if no such region exists, return the lowest region,
* which is null if _regions is empty. */
private BrowserDocumentRegion _lower(TreeSet<BrowserDocumentRegion> regions, BrowserDocumentRegion r) {
if (_regions.isEmpty()) return null;
BrowserDocumentRegion least = _regions.first();
SortedSet<BrowserDocumentRegion> lowerSet = regions.subSet(least, r);
// Utilities.show("Given regions = " + _regions + ", lowerSet = " + lowerSet);
if (lowerSet.isEmpty()) return _regions.first();
return lowerSet.last();
}
/** @return the lowest region (using compareTo) greater than r; if no such region exists, return the highest region,
* which is null if _regions is empty. */
private BrowserDocumentRegion _higher(TreeSet<BrowserDocumentRegion> regions, BrowserDocumentRegion r) {
if (_regions.isEmpty()) return null;
SortedSet<BrowserDocumentRegion> higherSet = regions.tailSet(r);
Iterator<BrowserDocumentRegion> it = higherSet.iterator();
while (it.hasNext()) {
BrowserDocumentRegion result = it.next();
if (! result.equals(r)) return result;
}
return _regions.last();
}
/** Set the maximum number of regions that can be stored in this manager. If the maximum capacity has been reached
* and another region is added, the region at the end farther away from the insertion location will be discarded.
* @param size maximum number of regions, or 0 if no maximum
*/
public /* synchronized */ void setMaximumSize(int size) {
_maxSize = size;
// remove regions if necessary
shrinkManager();
}
/** @return the maximum number of regions that can be stored in this manager. */
public int getMaximumSize() { return _maxSize; }
/** Apply the given command to the specified region to change it.
* @param region the region to find and change
* @param cmd command that mutates the region. */
public void changeRegion(final BrowserDocumentRegion region, Lambda<BrowserDocumentRegion,Object> cmd) {
cmd.value(region);
Utilities.invokeLater(new Runnable() { public void run() {
// notify
_lock.startRead();
try {
for (RegionManagerListener<BrowserDocumentRegion> l: _listeners) { l.regionChanged(region); }
} finally { _lock.endRead(); }
} });
}
}
The table below shows all metrics for BrowserHistoryManager.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 32.00 | Number of blocks | |
| BLOCK_COMMENT | 35.00 | Number of block comment lines | |
| COMMENTS | 102.00 | Comment lines | |
| COMMENT_DENSITY | 1.01 | Comment density | |
| COMPARISONS | 21.00 | Number of comparison operators | |
| CYCLOMATIC | 39.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 29.00 | Comments in declarations | |
| DOC_COMMENT | 46.00 | Number of javadoc comment lines | |
| ELOC | 101.00 | Effective lines of code | |
| EXEC_COMMENTS | 15.00 | Comments in executable code | |
| EXITS | 32.00 | Procedure exits | |
| FUNCTIONS | 21.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 54.17 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 42.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 0.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 0.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 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 | 2.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 3.00 | 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 | 11.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 1.00 | 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 | 5.00 | 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 | 11.00 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0109 | 4.00 | 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 | 0.00 | 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 | 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 | 1.00 | 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 | 1.00 | 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 | 257.00 | Number of lines in the source file | |
| LINE_COMMENT | 21.00 | Number of line comments | |
| LOC | 118.00 | Lines of code | |
| LOGICAL_LINES | 81.00 | Number of statements | |
| LOOPS | 3.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 325.00 | Number of operands | |
| OPERATORS | 647.00 | Number of operators | |
| PARAMS | 15.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 972.00 | Halstead program length | |
| PROGRAM_VOCAB | 160.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 27.00 | Number of return points from functions | |
| SIZE | 11407.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 120.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 40.00 | Number of unique operators | |
| WHITESPACE | 37.00 | Number of whitespace lines | |