for (int r = 0; r < rowCount; r++) { for (int c = 0; c < colCount; c++) { Object v1 = getObject(r, c); Object v2 = that.getObject(r, c); if (v1 == null) { if (v2 != null) { return false; } } else { if (!v1.equals(v2)) { return false; } } } }
for (int r = 0; r < rowCount; r++) { for (int c = 0; c < colCount; c++) { Number v1 = getValue(r, c); Number v2 = that.getValue(r, c); if (v1 == null) { if (v2 != null) { return false; } } else if (!v1.equals(v2)) { return false; } } }
Clone fragments detected by clone detection tool
File path: /jfreechart-1.0.10/src/org/jfree/data/KeyedObjects2D.java File path: /jfreechart-1.0.10/src/org/jfree/data/category/DefaultCategoryDataset.java
Method name: boolean equals(Object) Method name: boolean equals(Object)
Number of AST nodes: 9 Number of AST nodes: 9
1
for (int r = 0; r < rowCount; r++) {
1
for (int r = 0; r < rowCount; r++) {
2
            for (int c = 0; c < colCount; c++) {
2
            for (int c = 0; c < colCount; c++) {
3
                Object v1 = getObject(r, c);
3
                Number v1 = getValue(r, c);
4
                Object v2 = that.getObject(r, c);
4
                Number v2 = that.getValue(r, c);
5
                if (v1 == null) {
5
                if (v1 == null) {
6
                    if (v2 != null) {
6
                    if (v2 != null) {
7
                        return false;
7
                        return false;
8
                    }
8
                    }
9
                }
9
                }
10
                else {
10
                else 
11
                    if (!v1.equals(v2)) {
11
if (!v1.equals(v2)) {
12
                        return false;
12
                    return false;
13
                    }
14
                }
13
                }
15
            }
14
            }
16
        }
15
        }
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)0.2
Clones locationClones are in different classes
Number of node comparisons6
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements2
    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
    21
    if (v2 != null)
    21
    if (v2 != null)
    17
    if (v2 != null)
    Differences
    Expression1Expression2Difference
    java.lang.Objectjava.lang.NumberVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type java.lang.Object of variable v2 does not match with type java.lang.Number of variable v2
    • Make classes java.lang.Object and java.lang.Number extend a common superclass
    17
    if (v2 != null)
    22
    return false;
    18
    return false;
    Precondition Violations (2)
    Row Violation
    1Type java.lang.Object of variable v2 does not match with type java.lang.Number of variable v2
    2Not all possible execution flows end in a return statement