RDG1.java
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weka.datagenerators.classifiers.classification |
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Weka |
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 | |
|---|---|---|
| DECL_COMMENTS | Comments in declarations |  |
| DOC_COMMENT | Number of javadoc comment lines | |
| JAVA0034 | JAVA0034 Missing braces in if statement | |
| COMMENTS | Comment lines | |
| LOOPS | Number of loops | |
| SIZE | Size of the file in bytes | |
| LINES | Number of lines in the source file | |
| RETURNS | Number of return points from functions | |
| JAVA0177 | JAVA0177 Variable declaration missing initializer | |
| FUNCTIONS | Number of function declarations | |
| LOGICAL_LINES | Number of statements | |
| COMPARISONS | Number of comparison operators | |
| JAVA0233 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| EXITS | Procedure exits | |
| CYCLOMATIC | Cyclomatic complexity | |
| ELOC | Effective lines of code | |
| INTERFACE_COMPLEXITY | Interface complexity | |
| OPERATORS | Number of operators | |
| PROGRAM_LENGTH | Halstead program length | |
| LOC | Lines of code | |
| JAVA0035 | JAVA0035 Missing braces in for statement | |
| OPERANDS | Number of operands | |
| UNIQUE_OPERANDS | Number of unique operands | |
| JAVA0119 | JAVA0119 Control variable changed within body of for loop | |
| PROGRAM_VOCAB | Halstead program vocabulary | |
| EXEC_COMMENTS | Comments in executable code | |
| BLOCKS | Number of blocks | |
| JAVA0123 | JAVA0123 Use all three components of for loop | |
| WHITESPACE | Number of whitespace lines | |
| JAVA0081 | JAVA0081 Boolean literal in comparison | |
| JAVA0144 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0096 | JAVA0096 Field in nested class hides outer field | |
| JAVA0117 | JAVA0117 Missing javadoc: method 'method' | |
| UNIQUE_OPERATORS | Number of unique operators | |
| PROGRAM_VOLUME | Halstead program volume | |
| JAVA0136 | JAVA0136 N methods defined in class (maximum: M) | |
| JAVA0160 | JAVA0160 Method does not throw specified exception | |
| JAVA0126 | JAVA0126 Method declares unchecked exception in throws | |
| LINE_COMMENT | Number of line comments | |
| JAVA0110 | JAVA0110 Incorrect javadoc: no @return tag | |
| JAVA0043 | JAVA0043 Inner class does not use outer class | |
| JAVA0067 | JAVA0067 Array descriptor on identifier name | |
| PARAMS | Number of formal parameter declarations | |
| JAVA0100 | JAVA0100 Class contains N non-final fields (maximum: M) | |
| JAVA0108 | JAVA0108 Incorrect javadoc: no @param tag for 'parameter' | |
| JAVA0145 | JAVA0145 Tab character used in source file | |
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* RDG1.java
* Copyright (C) 2000 University of Waikato, Hamilton, New Zealand
*
*/
package weka.datagenerators.classifiers.classification;
import weka.core.Attribute;
import weka.core.FastVector;
import weka.core.Instance;
import weka.core.Instances;
import weka.core.Option;
import weka.core.RevisionHandler;
import weka.core.RevisionUtils;
import weka.core.Utils;
import weka.datagenerators.ClassificationGenerator;
import weka.datagenerators.Test;
import java.io.Serializable;
import java.util.Enumeration;
import java.util.Random;
import java.util.Vector;
/**
<!-- globalinfo-start -->
* A data generator that produces data randomly by producing a decision list.<br/>
* The decision list consists of rules.<br/>
* Instances are generated randomly one by one. If decision list fails to classify the current instance, a new rule according to this current instance is generated and added to the decision list.<br/>
* <br/>
* The option -V switches on voting, which means that at the end of the generation all instances are reclassified to the class value that is supported by the most rules.<br/>
* <br/>
* This data generator can generate 'boolean' attributes (= nominal with the values {true, false}) and numeric attributes. The rules can be 'A' or 'NOT A' for boolean values and 'B < random_value' or 'B >= random_value' for numeric values.
* <p/>
<!-- globalinfo-end -->
*
<!-- options-start -->
* Valid options are: <p/>
*
* <pre> -h
* Prints this help.</pre>
*
* <pre> -o <file>
* The name of the output file, otherwise the generated data is
* printed to stdout.</pre>
*
* <pre> -r <name>
* The name of the relation.</pre>
*
* <pre> -d
* Whether to print debug informations.</pre>
*
* <pre> -S
* The seed for random function (default 1)</pre>
*
* <pre> -n <num>
* The number of examples to generate (default 100)</pre>
*
* <pre> -a <num>
* The number of attributes (default 10).</pre>
*
* <pre> -c <num>
* The number of classes (default 2)</pre>
*
* <pre> -R <num>
* maximum size for rules (default 10) </pre>
*
* <pre> -M <num>
* minimum size for rules (default 1) </pre>
*
* <pre> -I <num>
* number of irrelevant attributes (default 0)</pre>
*
* <pre> -N
* number of numeric attributes (default 0)</pre>
*
* <pre> -V
* switch on voting (default is no voting)</pre>
*
<!-- options-end -->
*
* Following an example of a generated dataset: <br/>
* <pre>
* %
* % weka.datagenerators.RDG1 -r expl -a 2 -c 3 -n 4 -N 1 -I 0 -M 2 -R 10 -S 2
* %
* relation expl
*
* attribute a0 {false,true}
* attribute a1 numeric
* attribute class {c0,c1,c2}
*
* data
*
* true,0.496823,c0
* false,0.743158,c1
* false,0.408285,c1
* false,0.993687,c2
* %
* % Number of attributes chosen as irrelevant = 0
* %
* % DECISIONLIST (number of rules = 3):
* % RULE 0: c0 := a1 < 0.986, a0
* % RULE 1: c1 := a1 < 0.95, not(a0)
* % RULE 2: c2 := not(a0), a1 >= 0.562
* </pre>
*
* @author Gabi Schmidberger (gabi@cs.waikato.ac.nz)
* @version $Revision: 1.5 $
*/
public class RDG1
extends ClassificationGenerator {
/** for serialization */
static final long serialVersionUID = 7751005204635320414L;
/**
* class to represent decisionlist
*/
private class RuleList
implements Serializable, RevisionHandler {
/** for serialization */
static final long serialVersionUID = 2830125413361938177L;
/** rule list */
private FastVector m_RuleList = null;
/** class */
double m_ClassValue = 0.0;
/**
* returns the class value
*
* @return the class value
*/
public double getClassValue() {
return m_ClassValue;
}
/**
* sets the class value
*
* @param newClassValue the new classvalue
*/
public void setClassValue(double newClassValue) {
m_ClassValue = newClassValue;
}
/**
* adds the given test to the list
*
* @param newTest the test to add
*/
private void addTest (Test newTest) {
if (m_RuleList == null)
m_RuleList = new FastVector();
m_RuleList.addElement(newTest);
}
/**
* classifies the given example
*
* @param example the instance to classify
* @return the classification
* @throws Exception if classification fails
*/
private double classifyInstance (Instance example) throws Exception {
boolean passedAllTests = true;
for (Enumeration e = m_RuleList.elements();
passedAllTests && e.hasMoreElements(); ) {
Test test = (Test) e.nextElement();
passedAllTests = test.passesTest(example);
}
if (passedAllTests) return m_ClassValue;
else return -1.0;
}
/**
* returns a string representation of the rule list
*
* @return the rule list as string
*/
public String toString () {
StringBuffer str = new StringBuffer();
str = str.append(" c" + (int) m_ClassValue + " := ");
Enumeration e = m_RuleList.elements();
if (e.hasMoreElements()) {
Test test = (Test) e.nextElement();
str = str.append(test.toPrologString());
}
while (e.hasMoreElements()) {
Test test = (Test) e.nextElement();
str = str.append(", " + test.toPrologString());
}
return str.toString();
}
/**
* Returns the revision string.
*
* @return the revision
*/
public String getRevision() {
return RevisionUtils.extract("$Revision: 1.5 $");
}
} /*end class RuleList ******/
/** Number of attribute the dataset should have */
protected int m_NumAttributes;
/** Number of Classes the dataset should have */
protected int m_NumClasses;
/** maximum rule size*/
private int m_MaxRuleSize;
/** minimum rule size*/
private int m_MinRuleSize;
/** number of irrelevant attributes.*/
private int m_NumIrrelevant;
/** number of numeric attribute*/
private int m_NumNumeric;
/** flag that stores if voting is wished*/
private boolean m_VoteFlag = false;
/** decision list */
private FastVector m_DecisionList = null;
/** array defines which attributes are irrelevant, with:
* true = attribute is irrelevant; false = attribute is not irrelevant*/
boolean[] m_AttList_Irr;
/**
* initializes the generator with default values
*/
public RDG1() {
super();
setNumAttributes(defaultNumAttributes());
setNumClasses(defaultNumClasses());
setMaxRuleSize(defaultMaxRuleSize());
setMinRuleSize(defaultMinRuleSize());
setNumIrrelevant(defaultNumIrrelevant());
setNumNumeric(defaultNumNumeric());
}
/**
* Returns a string describing this data generator.
*
* @return a description of the data generator suitable for
* displaying in the explorer/experimenter gui
*/
public String globalInfo() {
return
"A data generator that produces data randomly by producing a decision list.\n"
+ "The decision list consists of rules.\n"
+ "Instances are generated randomly one by one. If decision list fails "
+ "to classify the current instance, a new rule according to this current "
+ "instance is generated and added to the decision list.\n\n"
+ "The option -V switches on voting, which means that at the end "
+ "of the generation all instances are "
+ "reclassified to the class value that is supported by the most rules.\n\n"
+ "This data generator can generate 'boolean' attributes (= nominal with "
+ "the values {true, false}) and numeric attributes. The rules can be "
+ "'A' or 'NOT A' for boolean values and 'B < random_value' or "
+ "'B >= random_value' for numeric values.";
}
/**
* Returns an enumeration describing the available options.
*
* @return an enumeration of all the available options
*/
public Enumeration listOptions() {
Vector result = enumToVector(super.listOptions());
result.addElement(new Option(
"\tThe number of attributes (default "
+ defaultNumAttributes() + ").",
"a", 1, "-a <num>"));
result.addElement(new Option(
"\tThe number of classes (default " + defaultNumClasses() + ")",
"c", 1, "-c <num>"));
result.addElement(new Option(
"\tmaximum size for rules (default "
+ defaultMaxRuleSize() + ") ",
"R", 1, "-R <num>"));
result.addElement(new Option(
"\tminimum size for rules (default "
+ defaultMinRuleSize() + ") ",
"M", 1, "-M <num>"));
result.addElement(new Option(
"\tnumber of irrelevant attributes (default "
+ defaultNumIrrelevant() + ")",
"I", 1, "-I <num>"));
result.addElement(new Option(
"\tnumber of numeric attributes (default "
+ defaultNumNumeric() + ")",
"N", 1, "-N"));
result.addElement(new Option(
"\tswitch on voting (default is no voting)",
"V", 1, "-V"));
return result.elements();
}
/**
* Parses a list of options for this object. <p/>
*
<!-- options-start -->
* Valid options are: <p/>
*
* <pre> -h
* Prints this help.</pre>
*
* <pre> -o <file>
* The name of the output file, otherwise the generated data is
* printed to stdout.</pre>
*
* <pre> -r <name>
* The name of the relation.</pre>
*
* <pre> -d
* Whether to print debug informations.</pre>
*
* <pre> -S
* The seed for random function (default 1)</pre>
*
* <pre> -n <num>
* The number of examples to generate (default 100)</pre>
*
* <pre> -a <num>
* The number of attributes (default 10).</pre>
*
* <pre> -c <num>
* The number of classes (default 2)</pre>
*
* <pre> -R <num>
* maximum size for rules (default 10) </pre>
*
* <pre> -M <num>
* minimum size for rules (default 1) </pre>
*
* <pre> -I <num>
* number of irrelevant attributes (default 0)</pre>
*
* <pre> -N
* number of numeric attributes (default 0)</pre>
*
* <pre> -V
* switch on voting (default is no voting)</pre>
*
<!-- options-end -->
*
* @param options the list of options as an array of strings
* @throws Exception if an option is not supported
*/
public void setOptions(String[] options) throws Exception {
String tmpStr;
super.setOptions(options);
tmpStr = Utils.getOption('a', options);
if (tmpStr.length() != 0)
setNumAttributes(Integer.parseInt(tmpStr));
else
setNumAttributes(defaultNumAttributes());
tmpStr = Utils.getOption('c', options);
if (tmpStr.length() != 0)
setNumClasses(Integer.parseInt(tmpStr));
else
setNumClasses(defaultNumClasses());
tmpStr = Utils.getOption('R', options);
if (tmpStr.length() != 0)
setMaxRuleSize(Integer.parseInt(tmpStr));
else
setMaxRuleSize(defaultMaxRuleSize());
tmpStr = Utils.getOption('M', options);
if (tmpStr.length() != 0)
setMinRuleSize(Integer.parseInt(tmpStr));
else
setMinRuleSize(defaultMinRuleSize());
tmpStr = Utils.getOption('I', options);
if (tmpStr.length() != 0)
setNumIrrelevant(Integer.parseInt(tmpStr));
else
setNumIrrelevant(defaultNumIrrelevant());
if ((getNumAttributes() - getNumIrrelevant()) < getMinRuleSize())
throw new Exception("Possible rule size is below minimal rule size.");
tmpStr = Utils.getOption('N', options);
if (tmpStr.length() != 0)
setNumNumeric(Integer.parseInt(tmpStr));
else
setNumNumeric(defaultNumNumeric());
setVoteFlag(Utils.getFlag('V', options));
}
/**
* Gets the current settings of the datagenerator RDG1.
*
* @return an array of strings suitable for passing to setOptions
*/
public String[] getOptions() {
Vector result;
String[] options;
int i;
result = new Vector();
options = super.getOptions();
for (i = 0; i < options.length; i++)
result.add(options[i]);
result.add("-a");
result.add("" + getNumAttributes());
result.add("-c");
result.add("" + getNumClasses());
result.add("-N");
result.add("" + getNumNumeric());
result.add("-I");
result.add("" + getNumIrrelevant());
result.add("-M");
result.add("" + getMinRuleSize());
result.add("-R");
result.add("" + getMaxRuleSize());
if (getVoteFlag())
result.add("-V");
return (String[]) result.toArray(new String[result.size()]);
}
/**
* returns the default number of attributes
*
* @return the default number of attributes
*/
protected int defaultNumAttributes() {
return 10;
}
/**
* Sets the number of attributes the dataset should have.
* @param numAttributes the new number of attributes
*/
public void setNumAttributes(int numAttributes) {
m_NumAttributes = numAttributes;
}
/**
* Gets the number of attributes that should be produced.
* @return the number of attributes that should be produced
*/
public int getNumAttributes() {
return m_NumAttributes;
}
/**
* Returns the tip text for this property
*
* @return tip text for this property suitable for
* displaying in the explorer/experimenter gui
*/
public String numAttributesTipText() {
return "The number of attributes the generated data will contain.";
}
/**
* returns the default number of classes
*
* @return the default number of classes
*/
protected int defaultNumClasses() {
return 2;
}
/**
* Sets the number of classes the dataset should have.
* @param numClasses the new number of classes
*/
public void setNumClasses(int numClasses) {
m_NumClasses = numClasses;
}
/**
* Gets the number of classes the dataset should have.
* @return the number of classes the dataset should have
*/
public int getNumClasses() {
return m_NumClasses;
}
/**
* Returns the tip text for this property
*
* @return tip text for this property suitable for
* displaying in the explorer/experimenter gui
*/
public String numClassesTipText() {
return "The number of classes to generate.";
}
/**
* returns the default max size of rules
*
* @return the default max size of rules
*/
protected int defaultMaxRuleSize() {
return 10;
}
/**
* Gets the maximum number of tests in rules.
*
* @return the maximum number of tests allowed in rules
*/
public int getMaxRuleSize() {
return m_MaxRuleSize;
}
/**
* Sets the maximum number of tests in rules.
*
* @param newMaxRuleSize new maximum number of tests allowed in rules.
*/
public void setMaxRuleSize(int newMaxRuleSize) {
m_MaxRuleSize = newMaxRuleSize;
}
/**
* Returns the tip text for this property
*
* @return tip text for this property suitable for
* displaying in the explorer/experimenter gui
*/
public String maxRuleSizeTipText() {
return "The maximum number of tests in rules.";
}
/**
* returns the default min size of rules
*
* @return the default min size of rules
*/
protected int defaultMinRuleSize() {
return 1;
}
/**
* Gets the minimum number of tests in rules.
*
* @return the minimum number of tests allowed in rules
*/
public int getMinRuleSize() {
return m_MinRuleSize;
}
/**
* Sets the minimum number of tests in rules.
*
* @param newMinRuleSize new minimum number of test in rules.
*/
public void setMinRuleSize(int newMinRuleSize) {
m_MinRuleSize = newMinRuleSize;
}
/**
* Returns the tip text for this property
*
* @return tip text for this property suitable for
* displaying in the explorer/experimenter gui
*/
public String minRuleSizeTipText() {
return "The minimum number of tests in rules.";
}
/**
* returns the default number of irrelevant attributes
*
* @return the default number of irrelevant attributes
*/
protected int defaultNumIrrelevant() {
return 0;
}
/**
* Gets the number of irrelevant attributes.
*
* @return the number of irrelevant attributes
*/
public int getNumIrrelevant() {
return m_NumIrrelevant;
}
/**
* Sets the number of irrelevant attributes.
*
* @param newNumIrrelevant the number of irrelevant attributes.
*/
public void setNumIrrelevant(int newNumIrrelevant) {
m_NumIrrelevant = newNumIrrelevant;
}
/**
* Returns the tip text for this property
*
* @return tip text for this property suitable for
* displaying in the explorer/experimenter gui
*/
public String numIrrelevantTipText() {
return "The number of irrelevant attributes.";
}
/**
* returns the default number of numeric attributes
*
* @return the default number of numeric attributes
*/
protected int defaultNumNumeric() {
return 0;
}
/**
* Gets the number of numerical attributes.
*
* @return the number of numerical attributes.
*/
public int getNumNumeric() {
return m_NumNumeric;
}
/**
* Sets the number of numerical attributes.
*
* @param newNumNumeric the number of numerical attributes.
*/
public void setNumNumeric(int newNumNumeric) {
m_NumNumeric = newNumNumeric;
}
/**
* Returns the tip text for this property
*
* @return tip text for this property suitable for
* displaying in the explorer/experimenter gui
*/
public String numNumericTipText() {
return "The number of numerical attributes.";
}
/**
* Gets the vote flag.
*
* @return voting flag.
*/
public boolean getVoteFlag() {
return m_VoteFlag;
}
/**
* Sets the vote flag.
*
* @param newVoteFlag boolean with the new setting of the vote flag.
*/
public void setVoteFlag(boolean newVoteFlag) {
m_VoteFlag = newVoteFlag;
}
/**
* Returns the tip text for this property
*
* @return tip text for this property suitable for
* displaying in the explorer/experimenter gui
*/
public String voteFlagTipText() {
return "Whether to use voting or not.";
}
/**
* Gets the single mode flag.
*
* @return true if methode generateExample can be used.
*/
public boolean getSingleModeFlag() {
return (!getVoteFlag());
}
/**
* Gets the array that defines which of the attributes
* are seen to be irrelevant.
*
* @return the array that defines the irrelevant attributes
*/
public boolean[] getAttList_Irr() {
return m_AttList_Irr;
}
/**
* Sets the array that defines which of the attributes
* are seen to be irrelevant.
*
* @param newAttList_Irr array that defines the irrelevant attributes.
*/
public void setAttList_Irr(boolean[] newAttList_Irr) {
m_AttList_Irr = newAttList_Irr;
}
/**
* Returns the tip text for this property
*
* @return tip text for this property suitable for
* displaying in the explorer/experimenter gui
*/
public String attList_IrrTipText() {
return "The array with the indices of the irrelevant attributes.";
}
/**
* Initializes the format for the dataset produced.
*
* @return the output data format
* @throws Exception data format could not be defined
*/
public Instances defineDataFormat() throws Exception {
Instances dataset;
Random random = new Random (getSeed());
setRandom(random);
m_DecisionList = new FastVector();
// number of examples is the same as given per option
setNumExamplesAct(getNumExamples());
// define dataset
dataset = defineDataset(random);
return dataset;
}
/**
* Generate an example of the dataset dataset.
* @return the instance generated
* @throws Exception if format not defined or generating <br/>
* examples one by one is not possible, because voting is chosen
*/
public Instance generateExample() throws Exception {
Random random = getRandom();
Instances format = getDatasetFormat();
if (format == null)
throw new Exception("Dataset format not defined.");
if (getVoteFlag())
throw new Exception("Examples cannot be generated one by one.");
// generate values for all attributes
format = generateExamples(1, random, format);
return format.lastInstance();
}
/**
* Generate all examples of the dataset.
* @return the instance generated
* @throws Exception if format not defined or generating <br/>
* examples one by one is not possible, because voting is chosen
*/
public Instances generateExamples() throws Exception {
Random random = getRandom();
Instances format = getDatasetFormat();
if (format == null)
throw new Exception("Dataset format not defined.");
// generate values for all attributes
format = generateExamples(getNumExamplesAct(), random, format);
// vote all examples, and set new class value
if (getVoteFlag())
format = voteDataset(format);
return format;
}
/**
* Generate all examples of the dataset.
* @param num the number of examples to generate
* @param random the random number generator to use
* @param format the dataset format
* @return the instance generated
* @throws Exception if format not defined or generating <br/>
* examples one by one is not possible, because voting is chosen
*/
public Instances generateExamples(int num,
Random random,
Instances format) throws Exception {
if (format == null)
throw new Exception("Dataset format not defined.");
// generate values for all attributes
for (int i = 0; i < num; i++) {
// over all examples to be produced
Instance example = generateExample(random, format);
// set class of example using decision list
boolean classDefined = classifyExample(example);
if (!classDefined) {
// set class with newly generated rule
example = updateDecisionList(random, example);
}
example.setDataset(format);
format.add(example);
}
return (format);
}
/**
* Generates a new rule for the decision list.
* and classifies the new example
* @param random random number generator
* @param example example used to update decision list
* @return the classified example
* @throws Exception if dataset format not defined
*/
private Instance updateDecisionList(Random random, Instance example)
throws Exception {
FastVector TestList;
Instances format = getDatasetFormat();
if (format == null)
throw new Exception("Dataset format not defined.");
TestList = generateTestList(random, example);
int maxSize = getMaxRuleSize() < TestList.size() ?
getMaxRuleSize() : TestList.size();
int ruleSize = ((int) (random.nextDouble() *
(double) (maxSize - getMinRuleSize())))
+ getMinRuleSize();
RuleList newRule = new RuleList();
for (int i=0; i < ruleSize; i++) {
int testIndex = (int) (random.nextDouble() * (double) TestList.size());
Test test = (Test) TestList.elementAt(testIndex);
newRule.addTest(test);
TestList.removeElementAt(testIndex);
}
double newClassValue = 0.0;
if (m_DecisionList.size() > 0) {
RuleList r = (RuleList)(m_DecisionList.lastElement());
double oldClassValue = (double)
(r.getClassValue());
newClassValue = (double)((int)oldClassValue + 1)
% getNumClasses();
}
newRule.setClassValue(newClassValue);
m_DecisionList.addElement(newRule);
example = (Instance)example.copy();
example.setDataset(format);
example.setClassValue(newClassValue);
return example;
}
/**
* Generates a new rule for the decision list
* and classifies the new example.
*
* @param random random number generator
* @param example the instance to classify
* @return a list of tests
* @throws Exception if dataset format not defined
*/
private FastVector generateTestList(Random random, Instance example)
throws Exception {
Instances format = getDatasetFormat();
if (format == null)
throw new Exception("Dataset format not defined.");
int numTests = getNumAttributes() - getNumIrrelevant();
FastVector TestList = new FastVector(numTests);
boolean[] irrelevant = getAttList_Irr();
for (int i = 0; i < getNumAttributes(); i++) {
if (!irrelevant[i]) {
Test newTest = null;
Attribute att = example.attribute(i);
if (att.isNumeric()) {
double newSplit = random.nextDouble();
boolean newNot = newSplit < example.value(i);
newTest = new Test(i, newSplit, format, newNot);
} else {
newTest = new Test(i, example.value(i), format, false);
}
TestList.addElement (newTest);
}
}
return TestList;
}
/**
* Generates an example with its classvalue set to missing
* and binds it to the datasets.
*
* @param random random number generator
* @param format dataset the example gets bind to
* @return the generated example
* @throws Exception if attribute type not supported
*/
private Instance generateExample(Random random, Instances format)
throws Exception {
double[] attributes;
Instance example;
attributes = new double[getNumAttributes() + 1];
for (int i = 0; i < getNumAttributes(); i++) {
double value = random.nextDouble();
if (format.attribute(i).isNumeric()) {
attributes[i] = value;
} else {
if (format.attribute(i).isNominal())
attributes[i] = (value > 0.5) ? 1.0 : 0.0;
else
throw new Exception ("Attribute type is not supported.");
}
}
example = new Instance(0, attributes);
example.setDataset(format);
example.setClassMissing();
return example;
}
/**
* Tries to classify an example.
*
* @param example the example to classify
* @return true if it could be classified
* @throws Exception if something goes wrong
*/
private boolean classifyExample(Instance example) throws Exception {
double classValue = -1.0;
for (Enumeration e = m_DecisionList.elements();
e.hasMoreElements() && classValue < 0.0;) {
RuleList rl = (RuleList) e.nextElement();
classValue = rl.classifyInstance(example);
}
if (classValue >= 0.0) {
example.setClassValue(classValue);
return true;
}
else {
return false;
}
}
/**
* Classify example with maximum vote the following way.
* With every rule in the decisionlist, it is evaluated if
* the given instance could be the class of the rule.
* Finally the class value that receives the highest number of votes
* is assigned to the example.
*
* @param example example to be reclassified
* @return instance with new class value
* @throws Exception if classification fails
*/
private Instance votedReclassifyExample(Instance example) throws Exception {
int classVotes[] = new int [getNumClasses()];
for (int i = 0; i < classVotes.length; i++) classVotes[i] = 0;
for (Enumeration e = m_DecisionList.elements();
e.hasMoreElements();) {
RuleList rl = (RuleList) e.nextElement();
int classValue = (int) rl.classifyInstance(example);
if (classValue >= 0) classVotes[classValue]++;
}
int maxVote = 0;
int vote = -1;
for (int i = 0; i < classVotes.length; i++) {
if (classVotes[i] > maxVote) {
maxVote = classVotes[i];
vote = i;
}
}
if (vote >= 0)
example.setClassValue((double) vote);
else
throw new Exception ("Error in instance classification.");
return example;
}
/**
* Returns a dataset header.
* @param random random number generator
* @return dataset header
* @throws Exception if something goes wrong
*/
private Instances defineDataset(Random random) throws Exception {
boolean[] attList_Irr;
int[] attList_Num;
FastVector attributes = new FastVector();
Attribute attribute;
FastVector nominalValues = new FastVector (2);
nominalValues.addElement("false");
nominalValues.addElement("true");
FastVector classValues = new FastVector (getNumClasses());
Instances dataset;
// set randomly those attributes that are irrelevant
attList_Irr = defineIrrelevant(random);
setAttList_Irr(attList_Irr);
// set randomly those attributes that are numeric
attList_Num = defineNumeric(random);
// define dataset
for (int i = 0; i < getNumAttributes(); i++) {
if (attList_Num[i] == Attribute.NUMERIC)
attribute = new Attribute("a" + i);
else
attribute = new Attribute("a" + i, nominalValues);
attributes.addElement(attribute);
}
for (int i = 0; i < classValues.capacity(); i++)
classValues.addElement("c" + i);
attribute = new Attribute ("class", classValues);
attributes.addElement(attribute);
dataset = new Instances(getRelationNameToUse(), attributes,
getNumExamplesAct());
dataset.setClassIndex(getNumAttributes());
// set dataset format of this class
Instances format = new Instances(dataset, 0);
setDatasetFormat(format);
return dataset;
}
/**
* Defines randomly the attributes as irrelevant.
* Number of attributes to be set as irrelevant is either set
* with a preceeding call of setNumIrrelevant() or is per default 0.
*
* @param random the random number generator to use
* @return list of boolean values with one value for each attribute,
* and each value set true or false according to if the corresponding
* attribute was defined irrelevant or not
*/
private boolean[] defineIrrelevant(Random random) {
boolean[] irr = new boolean [getNumAttributes()];
// initialize
for (int i = 0; i < irr.length; i++)
irr[i] = false;
// set randomly
int numIrr = 0;
for (int i = 0;
(numIrr < getNumIrrelevant()) && (i < getNumAttributes() * 5);
i++) {
int maybeNext = (int) (random.nextDouble() * (double) irr.length);
if (irr[maybeNext] == false) {
irr [maybeNext] = true;
numIrr++;
}
}
return irr;
}
/**
* Chooses randomly the attributes that get datatyp numeric.
* @param random the random number generator to use
* @return list of integer values, with one value for each attribute,
* and each value set to Attribut.NOMINAL or Attribut.NUMERIC
*/
private int[] defineNumeric(Random random) {
int[] num = new int [getNumAttributes()];
// initialize
for (int i = 0; i < num.length; i++)
num[i] = Attribute.NOMINAL;
int numNum = 0;
for (int i = 0;
(numNum < getNumNumeric()) && (i < getNumAttributes() * 5); i++) {
int maybeNext = (int) (random.nextDouble() * (double) num.length);
if (num[maybeNext] != Attribute.NUMERIC) {
num[maybeNext] = Attribute.NUMERIC;
numNum++;
}
}
return num;
}
/**
* Generates a comment string that documentates the data generator.
* By default this string is added at the beginning of the produced output
* as ARFF file type, next after the options.
*
* @return string contains info about the generated rules
*/
public String generateStart () {
return "";
}
/**
* Compiles documentation about the data generation. This is the number of
* irrelevant attributes and the decisionlist with all rules.
* Considering that the decisionlist might get enhanced until
* the last instance is generated, this method should be called at the
* end of the data generation process.
*
* @return string with additional information about generated dataset
* @throws Exception no input structure has been defined
*/
public String generateFinished() throws Exception {
StringBuffer dLString = new StringBuffer();
// string for output at end of ARFF-File
boolean[] attList_Irr = getAttList_Irr();
Instances format = getDatasetFormat();
dLString.append("%\n% Number of attributes chosen as irrelevant = " +
getNumIrrelevant() + "\n");
for (int i = 0; i < attList_Irr.length; i++) {
if (attList_Irr[i])
dLString.append("% " + format.attribute(i).name() + "\n");
}
dLString.append("%\n% DECISIONLIST (number of rules = " +
m_DecisionList.size() + "):\n");
for (int i = 0; i < m_DecisionList.size(); i++) {
RuleList rl = (RuleList) m_DecisionList.elementAt(i);
dLString.append("% RULE " + i + ": " + rl.toString() + "\n");
}
return dLString.toString();
}
/**
* Resets the class values of all instances using voting.
* For each instance the class value that satisfies the most rules
* is choosen as new class value.
*
* @param dataset the dataset to work on
* @return the changed instances
* @throws Exception if something goes wrong
*/
private Instances voteDataset(Instances dataset) throws Exception {
for (int i = 0; i < dataset.numInstances(); i++) {
Instance inst = dataset.firstInstance();
inst = votedReclassifyExample(inst);
dataset.add(inst);
dataset.delete(0);
}
return dataset;
}
/**
* Returns the revision string.
*
* @return the revision
*/
public String getRevision() {
return RevisionUtils.extract("$Revision: 1.5 $");
}
/**
* Main method for testing this class.
*
* @param args should contain arguments for the data producer:
*/
public static void main(String[] args) {
runDataGenerator(new RDG1(), args);
}
}
The table below shows all metrics for RDG1.java.
| Metric | Value | Description | |
|---|---|---|---|
| BLOCKS | 87.00 | Number of blocks | |
| BLOCK_COMMENT | 20.00 | Number of block comment lines | |
| COMMENTS | 532.00 | Comment lines | |
| COMMENT_DENSITY | 1.17 | Comment density | |
| COMPARISONS | 87.00 | Number of comparison operators | |
| CYCLOMATIC | 117.00 | Cyclomatic complexity | |
| DECL_COMMENTS | 76.00 | Comments in declarations | |
| DOC_COMMENT | 495.00 | Number of javadoc comment lines | |
| ELOC | 454.00 | Effective lines of code | |
| EXEC_COMMENTS | 17.00 | Comments in executable code | |
| EXITS | 88.00 | Procedure exits | |
| FUNCTIONS | 59.00 | Number of function declarations | |
| HALSTEAD_DIFFICULTY | 85.02 | Halstead difficulty | |
| HALSTEAD_EFFORT | 0.00 | Halstead effort | |
| INTERFACE_COMPLEXITY | 123.00 | Interface complexity | |
| JAVA0001 | 0.00 | JAVA0001 Package name does not contain only lower case letters | |
| JAVA0002 | 1.00 | JAVA0002 Package name does not begin with a top level domain name or country code | |
| JAVA0003 | 0.00 | JAVA0003 Minimize use of on-demand (.*) imports | |
| JAVA0004 | 0.00 | JAVA0004 Unnecessary import from java.lang | |
| JAVA0005 | 1.00 | JAVA0005 Imports not in specified order | |
| JAVA0006 | 0.00 | JAVA0006 Empty finally block | |
| JAVA0007 | 0.00 | JAVA0007 Should not declare public field | |
| JAVA0008 | 0.00 | JAVA0008 Empty catch block | |
| JAVA0009 | 0.00 | JAVA0009 Protected member in final class | |
| JAVA0010 | 0.00 | JAVA0010 Non-instantiable class does not contain a non-private static member | |
| JAVA0011 | 0.00 | JAVA0011 Abstract class does not contain an abstract method | |
| JAVA0012 | 0.00 | JAVA0012 Non-constructor method with same name as declaring class | |
| JAVA0013 | 0.00 | JAVA0013 Non-blank final field is not static | |
| JAVA0014 | 0.00 | JAVA0014 Class with only static members has non-private constructor | |
| JAVA0015 | 0.00 | JAVA0015 Package class contains public nested type | |
| JAVA0016 | 0.00 | JAVA0016 Abstract class contains public constructor | |
| JAVA0017 | 0.00 | JAVA0017 Class name does not have required form | |
| JAVA0018 | 0.00 | JAVA0018 Method name does not have required form | |
| JAVA0019 | 0.00 | JAVA0019 Interface name does not have required form | |
| JAVA0020 | 0.00 | JAVA0020 Field name does not have required form | |
| JAVA0021 | 0.00 | JAVA0021 Interface method name does not have required form | |
| JAVA0022 | 0.00 | JAVA0022 Static final field name does not have required form | |
| JAVA0023 | 0.00 | JAVA0023 Empty finalize method | |
| JAVA0024 | 0.00 | JAVA0024 Empty class | |
| JAVA0025 | 0.00 | JAVA0025 Method override is empty | |
| JAVA0026 | 0.00 | JAVA0026 Finalize method with parameters | |
| JAVA0029 | 0.00 | JAVA0029 Private method not used | |
| JAVA0030 | 0.00 | JAVA0030 Private field not used | |
| JAVA0031 | 0.00 | JAVA0031 Case statement not properly closed | |
| JAVA0032 | 0.00 | JAVA0032 Switch statement missing default | |
| JAVA0033 | 0.00 | JAVA0033 default: not last case in switch statement | |
| JAVA0034 | 32.00 | JAVA0034 Missing braces in if statement | |
| JAVA0035 | 5.00 | 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 | 1.00 | 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 | 1.00 | 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 | 1.00 | 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 | 2.00 | 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 | 1.00 | JAVA0081 Boolean literal in comparison | |
| JAVA0082 | 1.00 | 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 | 1.00 | JAVA0096 Field in nested class hides outer field | |
| JAVA0098 | 1.00 | 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 | 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 | 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 | 0.00 | JAVA0117 Missing javadoc: method 'method' | |
| JAVA0118 | 0.00 | JAVA0118 Missing javadoc: type 'type' | |
| JAVA0119 | 4.00 | JAVA0119 Control variable changed within body of for loop | |
| JAVA0123 | 3.00 | 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 | 1.00 | 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 | 3.00 | JAVA0144 Line exceeds maximum M characters | |
| JAVA0145 | 16.00 | 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 | 12.00 | JAVA0177 Variable declaration missing initializer | |
| JAVA0179 | 0.00 | JAVA0179 Local variable hides visible field | |
| JAVA0233 | 2.00 | JAVA0233 Definition of serialVersionUID other than 'private static final long serialVersionUID' | |
| JAVA0234 | 0.00 | JAVA0234 Class is Serializable but does not define serialVersionUID | |
| JAVA0235 | 0.00 | JAVA0235 Class defines serialVersionUID but does not implement Serializable | |
| JAVA0236 | 0.00 | JAVA0236 Attempt to clone an object which does not implement Cloneable | |
| JAVA0237 | 0.00 | JAVA0237 Class implements Cloneable but does not have public clone method | |
| JAVA0238 | 0.00 | JAVA0238 Clone method does not call super.clone() | |
| JAVA0239 | 0.00 | JAVA0239 Class declares 'readObject' or 'writeObject' but does not implement Serializable | |
| JAVA0240 | 0.00 | JAVA0240 Serializable class which declares readObject or writeObject but not both | |
| JAVA0241 | 0.00 | JAVA0241 'readObject' or 'writeObject' should be declared private in Serializable class | |
| JAVA0242 | 0.00 | JAVA0242 Transient field in non-Serializable class | |
| JAVA0243 | 0.00 | JAVA0243 'readResolve' or 'writeReplace' should be declared private or protected | |
| JAVA0244 | 0.00 | JAVA0244 Field or method name in subclass differs only by case from inherited field or method | |
| JAVA0245 | 0.00 | JAVA0245 JUnit TestCase with non-trivial constructor | |
| JAVA0246 | 0.00 | JAVA0246 JUnit assertXXX statement missing message parameter | |
| JAVA0247 | 0.00 | JAVA0247 JUnit 'setUp()' and 'tearDown()' should call super method | |
| JAVA0248 | 0.00 | JAVA0248 JUnit method 'setUp' or 'tearDown' with incorrect signature | |
| JAVA0249 | 0.00 | JAVA0249 JUnit TestCase 'suite()' should be declared static | |
| JAVA0250 | 0.00 | JAVA0250 JUnit TestCase declares testXXX method with incorrect signature | |
| JAVA0251 | 0.00 | JAVA0251 Use '%n' for line breaks in printf/format for platform independence | |
| JAVA0252 | 0.00 | JAVA0252 'enum' is a Java 1.5 reserved word | |
| JAVA0253 | 0.00 | JAVA0253 Not all enum constants consumed in switch statement | |
| JAVA0254 | 0.00 | JAVA0254 Use enhanced for loop construct instead of Iterator | |
| JAVA0255 | 0.00 | JAVA0255 Result of method invocation not used | |
| JAVA0256 | 1.00 | JAVA0256 Assignment of external collection/array to field | |
| JAVA0257 | 0.00 | JAVA0257 Use of 'Constant Interface' anti-pattern | |
| JAVA0258 | 0.00 | JAVA0258 Implement Iterable for foreach compatibility | |
| JAVA0259 | 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 | 1226.00 | Number of lines in the source file | |
| LINE_COMMENT | 17.00 | Number of line comments | |
| LOC | 540.00 | Lines of code | |
| LOGICAL_LINES | 317.00 | Number of statements | |
| LOOPS | 20.00 | Number of loops | |
| NEST_DEPTH | 4.00 | Maximum nesting depth | |
| OPERANDS | 1167.00 | Number of operands | |
| OPERATORS | 2313.00 | Number of operators | |
| PARAMS | 28.00 | Number of formal parameter declarations | |
| PROGRAM_LENGTH | 3480.00 | Halstead program length | |
| PROGRAM_VOCAB | 401.00 | Halstead program vocabulary | |
| PROGRAM_VOLUME | 0.00 | Halstead program volume | |
| RETURNS | 95.00 | Number of return points from functions | |
| SIZE | 35007.00 | Size of the file in bytes | |
| UNIQUE_OPERANDS | 350.00 | Number of unique operands | |
| UNIQUE_OPERATORS | 51.00 | Number of unique operators | |
| WHITESPACE | 154.00 | Number of whitespace lines | |