if (obj == this) { return true; } if (!(obj instanceof HistogramDataset)) { return false; } HistogramDataset that = (HistogramDataset) obj; if (!ObjectUtilities.equal(this.type, that.type)) { return false; } if (!ObjectUtilities.equal(this.list, that.list)) { return false; } return true;
if (obj == this) { return true; } if (!(obj instanceof MeanAndStandardDeviation)) { return false; } MeanAndStandardDeviation that = (MeanAndStandardDeviation) obj; if (!ObjectUtilities.equal(this.mean, that.mean)) { return false; } if (!ObjectUtilities.equal( this.standardDeviation, that.standardDeviation) ) { return false; } return true;
Clone fragments detected by clone detection tool
File path: /jfreechart-1.0.10/src/org/jfree/data/statistics/HistogramDataset.java File path: /jfreechart-1.0.10/src/org/jfree/data/statistics/MeanAndStandardDeviation.java
Method name: boolean equals(Object) Method name: boolean equals(Object)
Number of AST nodes: 10 Number of AST nodes: 10
1
if (obj == this) {
1
if (obj == this) {
2
            return true;
2
            return true;   
3
        }
3
        }
4
        if (!(obj instanceof HistogramDataset)) {
4
        if (!(obj instanceof MeanAndStandardDeviation)) {
5
            return false;
5
            return false;   
6
        }
6
        }
7
        HistogramDataset that = (HistogramDataset) obj;
7
        MeanAndStandardDeviation that = (MeanAndStandardDeviation) obj;
8
        if (!ObjectUtilities.equal(this.type, that.type)) {
8
        if (!ObjectUtilities.equal(this.mean, that.mean)) {
9
            return false;
9
            return false;   
10
        }
10
        }
11
        if (!ObjectUtilities.equal(this.list, that.list)
11
        if (!ObjectUtilities.equal(
12
            this.standardDeviation, that.standardDeviation)
12
) {
13
        ) {
13
            return false;
14
            return false;   
14
        }
15
        }
15
        return true;
16
        return true;
Summary
Number of common nesting structure subtrees1
Number of refactorable cases0
Number of non-refactorable cases1
Time elapsed for finding largest common nesting structure subtrees (ms)1.8
Clones locationClones are in different classes
Number of node comparisons41
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements9
    Number of unmapped statements in the first code fragment1
    Number of unmapped statements in the second code fragment1
    Time elapsed for statement mapping (ms)2.4
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (obj == this)
    1
    if (obj == this)
    2
    return true;
    2
    return true;
    3
    if (!(obj instanceof HistogramDataset))
    3
    if (!(obj instanceof HistogramDataset))
    3
    if (!(obj instanceof MeanAndStandardDeviation))
    Differences
    Expression1Expression2Difference
    org.jfree.data.statistics.HistogramDatasetorg.jfree.data.statistics.MeanAndStandardDeviationVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.jfree.data.statistics.HistogramDataset does not match with type org.jfree.data.statistics.MeanAndStandardDeviation
    • Make classes org.jfree.data.statistics.HistogramDataset and org.jfree.data.statistics.MeanAndStandardDeviation extend a common superclass
    3
    if (!(obj instanceof MeanAndStandardDeviation))
    4
    return false;
    4
    return false;
                                                                                                                                  
    5
    MeanAndStandardDeviation that = (MeanAndStandardDeviation)obj;
    5
    HistogramDataset that = (HistogramDataset)obj;
                                                                                                  
    6
    if (!ObjectUtilities.equal(this.type, that.type))
    6
    if (!ObjectUtilities.equal(this.type, that.type))
    6
    if (!ObjectUtilities.equal(this.mean, that.mean))
    Differences
    Expression1Expression2Difference
    typemeanVARIABLE_NAME_MISMATCH
    org.jfree.data.statistics.HistogramTypejava.lang.NumberVARIABLE_TYPE_MISMATCH
    org.jfree.data.statistics.HistogramDatasetorg.jfree.data.statistics.MeanAndStandardDeviationVARIABLE_TYPE_MISMATCH
    typemeanVARIABLE_NAME_MISMATCH
    org.jfree.data.statistics.HistogramTypejava.lang.NumberVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.jfree.data.statistics.HistogramType of variable this.type does not match with type java.lang.Number of variable this.mean
    • Make classes org.jfree.data.statistics.HistogramType and java.lang.Number extend a common superclass
    Type org.jfree.data.statistics.HistogramType of variable that.type does not match with type java.lang.Number of variable that.mean
    • Make classes org.jfree.data.statistics.HistogramDataset and org.jfree.data.statistics.MeanAndStandardDeviation extend a common superclass
    Expression that.type cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression that.mean cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Type org.jfree.data.statistics.HistogramType of variable that.type does not match with type java.lang.Number of variable that.mean
    • Make classes org.jfree.data.statistics.HistogramType and java.lang.Number extend a common superclass
    6
    if (!ObjectUtilities.equal(this.mean, that.mean))
    7
    return false;
    7
    return false;
    8
    if (!ObjectUtilities.equal(this.list, that.list))
    8
    if (!ObjectUtilities.equal(this.list, that.list))
    8
    if (!ObjectUtilities.equal(this.standardDeviation, that.standardDeviation))
    Differences
    Expression1Expression2Difference
    liststandardDeviationVARIABLE_NAME_MISMATCH
    java.util.Listjava.lang.NumberVARIABLE_TYPE_MISMATCH
    org.jfree.data.statistics.HistogramDatasetorg.jfree.data.statistics.MeanAndStandardDeviationVARIABLE_TYPE_MISMATCH
    liststandardDeviationVARIABLE_NAME_MISMATCH
    java.util.Listjava.lang.NumberVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type java.util.List of variable this.list does not match with type java.lang.Number of variable this.standardDeviation
    • Make classes java.util.List and java.lang.Number extend a common superclass
    Type java.util.List of variable that.list does not match with type java.lang.Number of variable that.standardDeviation
    • Make classes org.jfree.data.statistics.HistogramDataset and org.jfree.data.statistics.MeanAndStandardDeviation extend a common superclass
    Expression that.list cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Expression that.standardDeviation cannot be parameterized, because it has dependencies to/from statements that will be extracted
    Type java.util.List of variable that.list does not match with type java.lang.Number of variable that.standardDeviation
    • Make classes java.util.List and java.lang.Number extend a common superclass
    8
    if (!ObjectUtilities.equal(this.standardDeviation, that.standardDeviation))
    9
    return false;
    9
    return false;
    10
    return true;
    10
    return true;
    Precondition Violations (12)
    Row Violation
    1Type org.jfree.data.statistics.HistogramDataset does not match with type org.jfree.data.statistics.MeanAndStandardDeviation
    2Type org.jfree.data.statistics.HistogramType of variable this.type does not match with type java.lang.Number of variable this.mean
    3Type org.jfree.data.statistics.HistogramType of variable that.type does not match with type java.lang.Number of variable that.mean
    4Expression that.type cannot be parameterized, because it has dependencies to/from statements that will be extracted
    5Expression that.mean cannot be parameterized, because it has dependencies to/from statements that will be extracted
    6Type org.jfree.data.statistics.HistogramType of variable that.type does not match with type java.lang.Number of variable that.mean
    7Type java.util.List of variable this.list does not match with type java.lang.Number of variable this.standardDeviation
    8Type java.util.List of variable that.list does not match with type java.lang.Number of variable that.standardDeviation
    9Expression that.list cannot be parameterized, because it has dependencies to/from statements that will be extracted
    10Expression that.standardDeviation cannot be parameterized, because it has dependencies to/from statements that will be extracted
    11Type java.util.List of variable that.list does not match with type java.lang.Number of variable that.standardDeviation
    12The refactoring of the clones is infeasible, because classes org.jfree.data.statistics.HistogramDataset and org.jfree.data.statistics.MeanAndStandardDeviation do not have a common superclass