if (files == null) { files = getFileNames(this); } return files;
if (filterChains == null) { filterChains = new Vector(); } filterChains.addElement(filterChain);
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/Tar.java File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/Concat.java
Method name: String[] getFiles(Project) Method name: void addFilterChain(FilterChain)
Number of AST nodes: 3 Number of AST nodes: 3
1
if (files == null) {
1
if (filterChains == null) {
2
                files = getFileNames(this);
2
            filterChains = new Vector();
3
            }
3
        
4
}
4
            return files;
5
        filterChains.addElement(filterChain);
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)0.1
Clones locationClones are in different classes having the same super class
Number of node comparisons5
  1. {Non-refactorable}
    Mapping Summary
    Number of mapped statements1
    Number of unmapped statements in the first code fragment2
    Number of unmapped statements in the second code fragment2
    Time elapsed for statement mapping (ms)0.3
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (files == null)
    1
    if (files == null)
    1
    if (filterChains == null)
    Differences
    Expression1Expression2Difference
    filesfilterChainsVARIABLE_NAME_MISMATCH
    java.lang.String[]java.util.VectorVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type java.lang.String[] of variable files does not match with type java.util.Vector of variable filterChains
    • Make classes java.lang.String[] and java.util.Vector extend a common superclass
    1
    if (filterChains == null)
                                                              
    2
    filterChains = new Vector();
    2
    files = getFileNames(this);
                                                            
                                                                                    
    3
    filterChains.addElement(filterChain);
    3
    return files;
    3
    return files;
    Preondition Violations
    Unmatched return files;
                                    
    Precondition Violations (2)
    Row Violation
    1Type java.lang.String[] of variable files does not match with type java.util.Vector of variable filterChains
    2Unmatched return files;