if (obj == this) { return true; } if (!(obj instanceof NumberTickUnit)) { return false; } if (!super.equals(obj)) { return false; } NumberTickUnit that = (NumberTickUnit) obj; if (!this.formatter.equals(that.formatter)) { return false; } return true;
if (obj == this) { return true; } if (!(obj instanceof ArrowNeedle)) { return false; } if (!super.equals(obj)) { return false; } ArrowNeedle that = (ArrowNeedle) obj; if (this.isArrowAtTop != that.isArrowAtTop) { return false; } return true;
Clone fragments detected by clone detection tool
File path: /jfreechart-1.0.10/src/org/jfree/chart/axis/NumberTickUnit.java File path: /jfreechart-1.0.10/src/org/jfree/chart/needle/ArrowNeedle.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 NumberTickUnit)) {
4
        if (!(obj instanceof ArrowNeedle)) {
5
            return false;
5
            return false; 
6
        }
6
        }
7
        if (!super.equals(obj)) {
7
        if (!super.equals(obj)) {
8
            return false;
8
            return false;
9
        }
9
        }
10
        NumberTickUnit that = (NumberTickUnit) obj;
10
        ArrowNeedle that = (ArrowNeedle) obj;
11
        if (!this.formatter.equals(that.formatter)) {
11
        if (this.isArrowAtTop != that.isArrowAtTop) {
12
            return false;
12
            return false;
13
        }
13
        }
14
        return true;
14
        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 comparisons28
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements6
    Number of unmapped statements in the first code fragment0
    Number of unmapped statements in the second code fragment0
    Time elapsed for statement mapping (ms)0.8
    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 NumberTickUnit))
    3
    if (!(obj instanceof NumberTickUnit))
    3
    if (!(obj instanceof ArrowNeedle))
    Differences
    Expression1Expression2Difference
    org.jfree.chart.axis.NumberTickUnitorg.jfree.chart.needle.ArrowNeedleVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.jfree.chart.axis.NumberTickUnit does not match with type org.jfree.chart.needle.ArrowNeedle
    • Make classes org.jfree.chart.axis.NumberTickUnit and org.jfree.chart.needle.ArrowNeedle extend a common superclass
    3
    if (!(obj instanceof ArrowNeedle))
    4
    return false;
    4
    return false;
    5
    if (!super.equals(obj))
    5
    if (!super.equals(obj))
    5
    if (!super.equals(obj))
    Preondition Violations
    Super method call if(!super.equals(obj)) cannot be extracted from method
    Super method call if(!super.equals(obj)) cannot be extracted from method
    5
    if (!super.equals(obj))
    6
    return false;
    6
    return false;
    Precondition Violations (5)
    Row Violation
    1Type org.jfree.chart.axis.NumberTickUnit does not match with type org.jfree.chart.needle.ArrowNeedle
    2Super method call if(!super.equals(obj)) cannot be extracted from method
    3Super method call if(!super.equals(obj)) cannot be extracted from method
    4Not all possible execution flows end in a return statement
    5The refactoring of the clones is infeasible, because classes org.jfree.chart.axis.NumberTickUnit and org.jfree.chart.needle.ArrowNeedle do not have a common superclass