if (commandline == null) { commandline = new CommandlineJava(); } return commandline;
if (perm == null) { perm = new Permissions(); } return perm;
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/optional/junit/JUnitTask.java File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/optional/junit/JUnitTask.java
Method name: CommandlineJava getCommandline() Method name: Permissions createPermissions()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (commandline == null) {
1
if (perm == null) {
2
            commandline = new CommandlineJava();
2
            perm = new Permissions();
3
        }
3
        }
4
        return commandline;
4
        return perm;
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 declared in the same 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 (commandline == null)
    1
    if (commandline == null)
    1
    if (perm == null)
    Differences
    Expression1Expression2Difference
    commandlinepermVARIABLE_NAME_MISMATCH
    org.apache.tools.ant.types.CommandlineJavaorg.apache.tools.ant.types.PermissionsVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.apache.tools.ant.types.CommandlineJava of variable commandline does not match with type org.apache.tools.ant.types.Permissions of variable perm
    • Make classes org.apache.tools.ant.types.CommandlineJava and org.apache.tools.ant.types.Permissions extend a common superclass
    1
    if (perm == null)
                                                        
    2
    perm = new Permissions();
    2
    commandline = new CommandlineJava();
                                                                              
                                  
    3
    return perm;
    Preondition Violations
    Unmatched return perm;
    3
    return perm;
    3
    return commandline;
    3
    return commandline;
    Preondition Violations
    Unmatched return commandline;
                                                
    Precondition Violations (3)
    Row Violation
    1Type org.apache.tools.ant.types.CommandlineJava of variable commandline does not match with type org.apache.tools.ant.types.Permissions of variable perm
    2Unmatched return perm;
    3Unmatched return commandline;