if (obj == null) { return false; } if (obj == this) { return true; } if (!(obj instanceof HistogramType)) { return false; } HistogramType t = (HistogramType) obj; if (!this.name.equals(t.name)) { return false; } return true;
if (obj == this) { return true; } if (!(obj instanceof XYCoordinate)) { return false; } XYCoordinate that = (XYCoordinate) obj; if (this.x != that.x) { return false; } if (this.y != that.y) { return false; } return true;
Clone fragments detected by clone detection tool
File path: /jfreechart-1.0.10/src/org/jfree/data/statistics/HistogramType.java File path: /jfreechart-1.0.10/src/org/jfree/data/xy/XYCoordinate.java
Method name: boolean equals(Object) Method name: boolean equals(Object)
Number of AST nodes: 10 Number of AST nodes: 10
1
if (obj == null) {
1
if (obj == this) {
2
            return false;   
2
            return true;
3
        }
3
        }
4
        
5
        if (obj == this) {
4
        if (!(obj instanceof XYCoordinate)) {
6
            return true;
5
            return false;
7
        }
6
        }
8
        
7
        
9
        if (!(obj instanceof HistogramType)) {
10
            return false;
11
        }
12
        
13
        HistogramType t = (HistogramType) obj;
14
        if (!this.name.equals(t.name)
8
XYCoordinate that = (XYCoordinate) obj;
9
        if (this.x != that.x) {
10
            return false;
11
        }
15
) {
12
        if (this.y != that.y) {
16
            return false;
13
            return false;
17
        }
14
        }
18
        
19
        return true;
15
        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)0.7
Clones locationClones are in different classes
Number of node comparisons22
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements4
    Number of unmapped statements in the first code fragment2
    Number of unmapped statements in the second code fragment0
    Time elapsed for statement mapping (ms)0.9
    Clone typeType 3
    Mapped Statements
    ID Statement ID Statement
    1
    if (obj == null)
    1
    if (obj == null)
    1
    if (obj == this)
    Differences
    Expression1Expression2Difference
    nullthisTYPE_COMPATIBLE_REPLACEMENT
    1
    if (obj == this)
    2
    return false;
    2
    return false;
    2
    return true;
    Differences
    Expression1Expression2Difference
    falsetrueLITERAL_VALUE_MISMATCH
    2
    return true;
    3
    if (obj == this)
                                        
    4
    return true;
    4
    return true;
    Preondition Violations
    Unmatched return true;
                                  
    5
    if (!(obj instanceof HistogramType))
    5
    if (!(obj instanceof HistogramType))
    3
    if (!(obj instanceof XYCoordinate))
    Differences
    Expression1Expression2Difference
    org.jfree.data.statistics.HistogramTypeorg.jfree.data.xy.XYCoordinateVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.jfree.data.statistics.HistogramType does not match with type org.jfree.data.xy.XYCoordinate
    • Make classes org.jfree.data.statistics.HistogramType and org.jfree.data.xy.XYCoordinate extend a common superclass
    3
    if (!(obj instanceof XYCoordinate))
    6
    return false;
    4
    return false;
    Precondition Violations (3)
    Row Violation
    1Unmatched return true;
    2Type org.jfree.data.statistics.HistogramType does not match with type org.jfree.data.xy.XYCoordinate
    3Not all possible execution flows end in a return statement