Linker.java
| Index Score | ||
|---|---|---|
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net.sourceforge.pmd.dfa |
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PMD |
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 | |
|---|---|---|
| JAVA0285 | JAVA0285 Dereference of potentially null variable |  |
| JAVA0031 | JAVA0031 Case statement not properly closed | |
| EXEC_COMMENTS | Comments in executable code | |
| COMPARISONS | Number of comparison operators | |
| JAVA0115 | JAVA0115 Incorrect javadoc: no @throws or @exception tag for 'exception' | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0032 | JAVA0032 Switch statement missing default | |
| EXITS | Procedure exits | |
| JAVA0160 | JAVA0160 Method does not throw specified exception | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| SIZE | Size of the file in bytes | |
| UNIQUE_OPERATORS | Number of unique operators | |
| JAVA0123 | JAVA0123 Use all three components of for loop | |
| RETURNS | Number of return points from functions | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| OPERATORS | Number of operators | |
| LOOPS | Number of loops | |
| PROGRAM_LENGTH | Halstead program length | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| DECL_COMMENTS | Comments in declarations | |
| DOC_COMMENT | Number of javadoc comment lines | |
| BLOCK_COMMENT | Number of block comment lines | |
| OPERANDS | Number of operands | |
| FUNCTIONS | Number of function declarations | |
| JAVA0130 | JAVA0130 Non-static method does not use instance fields | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| WHITESPACE | Number of whitespace lines | |
| CYCLOMATIC | Cyclomatic complexity | |
| JAVA0256 | JAVA0256 Assignment of external collection/array to field | |
| NEST_DEPTH | Maximum nesting depth | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/*
* Created on 12.07.2004
*/
package net.sourceforge.pmd.dfa;
import java.util.List;
import net.sourceforge.pmd.ast.ASTLabeledStatement;
import net.sourceforge.pmd.ast.SimpleNode;
/**
* @author raik
* Links data flow nodes to each other.
*/
public class Linker {
private List braceStack;
private List continueBreakReturnStack;
public Linker(List braceStack, List continueBreakReturnStack) {
this.braceStack = braceStack;
this.continueBreakReturnStack = continueBreakReturnStack;
}
/**
* Creates all the links between the data flow nodes.
*/
public void computePaths() throws LinkerException, SequenceException {
// Returns true if there are more sequences, computes the first and
// the last index of the sequence.
SequenceChecker sc = new SequenceChecker(braceStack);
while (!sc.run()) {
if (sc.getFirstIndex() < 0 || sc.getLastIndex() < 0) {
throw new SequenceException("computePaths(): return index < 0");
}
StackObject firstStackObject = (StackObject) braceStack.get(sc.getFirstIndex());
switch (firstStackObject.getType()) {
case NodeType.IF_EXPR:
int x = sc.getLastIndex() - sc.getFirstIndex();
if (x == 2) {
this.computeIf(sc.getFirstIndex(), sc.getFirstIndex() + 1, sc.getLastIndex());
} else if (x == 1) {
this.computeIf(sc.getFirstIndex(), sc.getLastIndex());
} else {
System.out.println("Error - computePaths 1");
}
break;
case NodeType.WHILE_EXPR:
this.computeWhile(sc.getFirstIndex(), sc.getLastIndex());
break;
case NodeType.SWITCH_START:
this.computeSwitch(sc.getFirstIndex(), sc.getLastIndex());
break;
case NodeType.FOR_INIT:
case NodeType.FOR_EXPR:
case NodeType.FOR_UPDATE:
case NodeType.FOR_BEFORE_FIRST_STATEMENT:
this.computeFor(sc.getFirstIndex(), sc.getLastIndex());
break;
case NodeType.DO_BEFORE_FIRST_STATEMENT:
this.computeDo(sc.getFirstIndex(), sc.getLastIndex());
break;
default:
}
for (int y = sc.getLastIndex(); y >= sc.getFirstIndex(); y--) {
braceStack.remove(y);
}
}
while (!continueBreakReturnStack.isEmpty()) {
StackObject stackObject = (StackObject) continueBreakReturnStack.get(0);
IDataFlowNode node = stackObject.getDataFlowNode();
switch (stackObject.getType()) {
case NodeType.THROW_STATEMENT:
// do the same like a return
case NodeType.RETURN_STATEMENT:
// remove all children (should contain only one child)
node.removePathToChild(node.getChildren().get(0));
IDataFlowNode lastNode = node.getFlow().get(node.getFlow().size() - 1);
node.addPathToChild(lastNode);
continueBreakReturnStack.remove(0);
break;
case NodeType.BREAK_STATEMENT:
IDataFlowNode last = getNodeToBreakStatement(node);
node.removePathToChild(node.getChildren().get(0));
node.addPathToChild(last);
continueBreakReturnStack.remove(0);
break;
case NodeType.CONTINUE_STATEMENT:
//List cList = node.getFlow();
/* traverse up the tree and find the first loop start node
*/
/*
for(int i = cList.indexOf(node)-1;i>=0;i--) {
IDataFlowNode n = (IDataFlowNode)cList.get(i);
if(n.isType(NodeType.FOR_UPDATE) ||
n.isType(NodeType.FOR_EXPR) ||
n.isType(NodeType.WHILE_EXPR)) {
*/
/*
* while(..) {
* while(...) {
* ...
* }
* continue;
* }
*
* Without this Expression he continues the second
* WHILE loop. The continue statement and the while loop
* have to be in different scopes.
*
* TODO An error occurs if "continue" is even nested in
* scopes other than local loop scopes, like "if".
* The result is, that the data flow isn't build right
* and the pathfinder runs in invinity loop.
* */
/* if(n.getSimpleNode().getScope().equals(node.getSimpleNode().getScope())) {
System.err.println("equals");
continue;
}
else {
System.err.println("don't equals");
}
//remove all children (should contain only one child)
node.removePathToChild((IDataFlowNode)node.getChildren().get(0));
node.addPathToChild(n);
cbrStack.remove(0);
break;
}else if(n.isType(NodeType.DO_BEFOR_FIRST_STATEMENT)) {
IDataFlowNode inode = (IDataFlowNode)n.getFlow().get(n.getIndex()1);
for(int j=0;j<inode.getParents().size();j) {
IDataFlowNode parent = (IDataFlowNode)inode.getParents().get(j);
if(parent.isType(NodeType.DO_EXPR)) {
node.removePathToChild((IDataFlowNode)node.getChildren().get(0));
node.addPathToChild(parent);
cbrStack.remove(0);
break;
}
}
break;
}
}
*/continueBreakReturnStack.remove(0); // delete this statement if you uncomment the stuff above
}
}
}
private IDataFlowNode getNodeToBreakStatement(IDataFlowNode node) {
// What about breaks to labels above if statements?
List bList = node.getFlow();
int findEnds = 1; // ignore ends of other for's while's etc.
// find out index of the node where the path goes to after the break
int index = bList.indexOf(node);
for (; index < bList.size()-2; index++) {
IDataFlowNode n = (IDataFlowNode) bList.get(index);
if (n.isType(NodeType.DO_EXPR) ||
n.isType(NodeType.FOR_INIT) ||
n.isType(NodeType.WHILE_EXPR) ||
n.isType(NodeType.SWITCH_START)) {
findEnds++;
}
if (n.isType(NodeType.WHILE_LAST_STATEMENT) ||
n.isType(NodeType.SWITCH_END) ||
n.isType(NodeType.FOR_END) ||
n.isType(NodeType.DO_EXPR)) {
if (findEnds > 1) {
// thats not the right node
findEnds--;
} else {
break;
}
}
if (n.isType(NodeType.LABEL_LAST_STATEMENT)) {
SimpleNode parentNode = n.getSimpleNode().getFirstParentOfType(ASTLabeledStatement.class);
if (parentNode == null) {
break;
} else {
String label = node.getSimpleNode().getImage();
if (label == null || label.equals(parentNode.getImage())) {
node.removePathToChild(node.getChildren().get(0));
IDataFlowNode last = (IDataFlowNode) bList.get(index + 1);
node.addPathToChild(last);
break;
}
}
}
}
return node.getFlow().get(index+1);
}
private void computeDo(int first, int last) {
IDataFlowNode doSt = ((StackObject) this.braceStack.get(first)).getDataFlowNode();
IDataFlowNode doExpr = ((StackObject) this.braceStack.get(last)).getDataFlowNode();
IDataFlowNode doFirst = doSt.getFlow().get(doSt.getIndex() + 1);
if (doFirst.getIndex() != doExpr.getIndex()) {
doExpr.addPathToChild(doFirst);
}
}
private void computeFor(int firstIndex, int lastIndex) {
IDataFlowNode fExpr = null;
IDataFlowNode fUpdate = null;
IDataFlowNode fSt = null;
IDataFlowNode fEnd = null;
boolean isUpdate = false;
for (int i = firstIndex; i <= lastIndex; i++) {
StackObject so = (StackObject) this.braceStack.get(i);
IDataFlowNode node = so.getDataFlowNode();
if (so.getType() == NodeType.FOR_EXPR) {
fExpr = node;
} else if (so.getType() == NodeType.FOR_UPDATE) {
fUpdate = node;
isUpdate = true;
} else if (so.getType() == NodeType.FOR_BEFORE_FIRST_STATEMENT) {
fSt = node;
} else if (so.getType() == NodeType.FOR_END) {
fEnd = node;
}
}
IDataFlowNode end = fEnd.getFlow().get(fEnd.getIndex() + 1);
IDataFlowNode firstSt = fSt.getChildren().get(0);
if (isUpdate) {
if (fSt.getIndex() != fEnd.getIndex()) {
end.reverseParentPathsTo(fUpdate);
fExpr.removePathToChild(fUpdate);
fUpdate.addPathToChild(fExpr);
fUpdate.removePathToChild(firstSt);
fExpr.addPathToChild(firstSt);
fExpr.addPathToChild(end);
} else {
fSt.removePathToChild(end);
fExpr.removePathToChild(fUpdate);
fUpdate.addPathToChild(fExpr);
fExpr.addPathToChild(fUpdate);
fExpr.addPathToChild(end);
}
} else {
if (fSt.getIndex() != fEnd.getIndex()) {
end.reverseParentPathsTo(fExpr);
fExpr.addPathToChild(end);
}
}
}
private void computeSwitch(int firstIndex, int lastIndex) {
int diff = lastIndex - firstIndex;
boolean defaultStatement = false;
IDataFlowNode sStart = ((StackObject) this.braceStack.get(firstIndex)).getDataFlowNode();
IDataFlowNode sEnd = ((StackObject) this.braceStack.get(lastIndex)).getDataFlowNode();
IDataFlowNode end = sEnd.getChildren().get(0);
for (int i = 0; i < diff - 2; i++) {
StackObject so = (StackObject) this.braceStack.get(firstIndex + 2 + i);
IDataFlowNode node = so.getDataFlowNode();
sStart.addPathToChild(node.getChildren().get(0));
if (so.getType() == NodeType.SWITCH_LAST_DEFAULT_STATEMENT)
defaultStatement = true;
}
if (!defaultStatement)
sStart.addPathToChild(end);
}
private void computeWhile(int first, int last) {
IDataFlowNode wStart = ((StackObject) this.braceStack.get(first)).getDataFlowNode();
IDataFlowNode wEnd = ((StackObject) this.braceStack.get(last)).getDataFlowNode();
IDataFlowNode end = wEnd.getFlow().get(wEnd.getIndex() + 1);
if (wStart.getIndex() != wEnd.getIndex()) {
end.reverseParentPathsTo(wStart);
wStart.addPathToChild(end);
}
}
private void computeIf(int first, int second, int last) {
IDataFlowNode ifStart = ((StackObject) this.braceStack.get(first)).getDataFlowNode();
IDataFlowNode ifEnd = ((StackObject) this.braceStack.get(second)).getDataFlowNode();
IDataFlowNode elseEnd = ((StackObject) this.braceStack.get(last)).getDataFlowNode();
IDataFlowNode elseStart = ifEnd.getFlow().get(ifEnd.getIndex() + 1);
IDataFlowNode end = elseEnd.getFlow().get(elseEnd.getIndex() + 1);
// if if-statement and else-statement contains statements or expressions
if (ifStart.getIndex() != ifEnd.getIndex() &&
ifEnd.getIndex() != elseEnd.getIndex()) {
elseStart.reverseParentPathsTo(end);
ifStart.addPathToChild(elseStart);
}
// if only if-statement contains no expressions
else if (ifStart.getIndex() == ifEnd.getIndex() &&
ifEnd.getIndex() != elseEnd.getIndex()) {
ifStart.addPathToChild(end);
}
// if only else-statement contains no expressions
else if (ifEnd.getIndex() == elseEnd.getIndex() &&
ifStart.getIndex() != ifEnd.getIndex()) {
ifStart.addPathToChild(end);
}
}
private void computeIf(int first, int last) {
IDataFlowNode ifStart = ((StackObject) this.braceStack.get(first)).getDataFlowNode();
IDataFlowNode ifEnd = ((StackObject) this.braceStack.get(last)).getDataFlowNode();
// only if the if-statement contains another Statement or Expression
if (ifStart.getIndex() != ifEnd.getIndex()) {
IDataFlowNode end = ifEnd.getFlow().get(ifEnd.getIndex() + 1);
ifStart.addPathToChild(end);
}
}
}
The table below shows all metrics for Linker.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 42.00 | Number of blocks | |
| BLOCK_COMMENT | 63.00 | Number of block comment lines | |
| COMMENTS | 82.00 | Comment lines | |
| COMMENT_DENSITY | 0.45 | Comment density | |
| COMPARISONS | 50.00 | Number of comparison operators | |
| CYCLOMATIC | 59.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 3.00 | Comments in declarations | |
| DOC_COMMENT | 7.00 | Number of javadoc comment lines | |
| ELOC | 181.00 | Effective lines of code | |
| EXEC_COMMENTS | 15.00 | Comments in executable code | |
| EXITS | 44.00 | Procedure exits | |
| FUNCTIONS | 9.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 1.23 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 26.00 | 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 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 2.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 1.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 2.00 | 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 | 0.00 | JAVA0113 Incorrect javadoc: no @author tag | |
| JAVA0114 | 1.00 | JAVA0114 Incorrect javadoc: no @version tag | |
| JAVA0115 | 2.00 | 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 | 1.00 | 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 | 0.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 3.00 | 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 | 1.00 | 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 | 0.00 | JAVA0171 Unused local variable | |
| JAVA0173 | 0.00 | JAVA0173 Unused method parameter | |
| JAVA0174 | 0.00 | JAVA0174 Assigned local variable never used | |
| JAVA0175 | 0.00 | JAVA0175 Successive assignment to variable | |
| JAVA0176 | 0.00 | JAVA0176 Local variable name does not have required form | |
| JAVA0177 | 0.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 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 | 2.00 | 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 | 1.00 | 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 | 18.00 | 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 | |
| JAVA0289 | 3.00 | null | |
| LINES | 341.00 | Number of lines in the source file | |
| LINE_COMMENT | 12.00 | Number of line comments | |
| LOC | 217.00 | Lines of code | |
| LOGICAL_LINES | 120.00 | Number of statements | |
| LOOPS | 6.00 | Number of loops | |
| NEST_DEPTH | 5.00 | Maximum nesting depth | |
| OPERANDS | 644.00 | Number of operands | |
| OPERATORS | 1234.00 | Number of operators | |
| PARAMS | 16.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 1878.00 | Halstead program length | |
| PROGRAM_VOCAB | 201.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 10.00 | Number of return points from functions | |
| SIZE | 14461.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 155.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 46.00 | Number of unique operators | |
| WHITESPACE | 42.00 | Number of whitespace lines | |