StringWriter sw = new StringWriter(); PrintWriter w = new PrintWriter(sw);
StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw);
Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/Java.java File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/optional/junit/JUnitTestRunner.java
Method name: void log(Throwable) Method name: String filterStack(String)
Number of AST nodes: 2 Number of AST nodes: 2
1
StringWriter sw = new StringWriter();
1
StringWriter sw = new StringWriter();
2
        PrintWriter w = new PrintWriter(sw);
2
        PrintWriter pw = new PrintWriter(sw);
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)0.0
Clones locationClones are in different classes
Number of node comparisons2
  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)0.0
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    StringWriter sw = new StringWriter();
    3
    StringWriter sw = new StringWriter();
    2
    PrintWriter w = new PrintWriter(sw);
    2
    PrintWriter w = new PrintWriter(sw);
    4
    PrintWriter pw = new PrintWriter(sw);
    Differences
    Expression1Expression2Difference
    wpwVARIABLE_NAME_MISMATCH
    4
    PrintWriter pw = new PrintWriter(sw);
    Precondition Violations (2)
    Row Violation
    1Clone fragment #1 returns variables w, sw , while Clone fragment #2 returns variables pw, sw
    2The refactoring of the clones is infeasible, because classes org.apache.tools.ant.taskdefs.Java and org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner do not have a common superclass