if (instance == null) { instance = new HeaderItemDNDManager(); } return instance;
if (delimiter == null) { // try to determine delimiter delimiter = fetchDelimiter(); } return delimiter;
Clone fragments detected by clone detection tool
File path: /columba-1.4-src/contact/src/main/java/org/columba/addressbook/gui/list/HeaderItemDNDManager.java File path: /columba-1.4-src/mail/src/main/java/org/columba/mail/imap/IMAPServer.java
Method name: HeaderItemDNDManager getInstance() Method name: String getDelimiter()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (instance == null) {
1
if (delimiter == null) {
2
            instance = new HeaderItemDNDManag
2
            // try to determine delimiter
3
er();
3
            delimiter = fetchDelimiter();
4
        }
4
        }
5

6
        return instance;
5
        return delimiter;
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
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)0.4
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (instance == null)
    1
    if (instance == null)
    1
    if (delimiter == null)
    Differences
    Expression1Expression2Difference
    instancedelimiterVARIABLE_NAME_MISMATCH
    org.columba.addressbook.gui.list.HeaderItemDNDManagerjava.lang.StringVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.columba.addressbook.gui.list.HeaderItemDNDManager of variable instance does not match with type java.lang.String of variable delimiter
    • Make classes org.columba.addressbook.gui.list.HeaderItemDNDManager and java.lang.String extend a common superclass
    1
    if (delimiter == null)
                                                                
    2
    delimiter = fetchDelimiter();
    2
    instance = new HeaderItemDNDManager();
                                                                                  
                                            
    3
    return delimiter;
    Preondition Violations
    Unmatched return delimiter;
    3
    return delimiter;
    3
    return instance;
    3
    return instance;
    Preondition Violations
    Unmatched return instance;
                                          
    Precondition Violations (3)
    Row Violation
    1Type org.columba.addressbook.gui.list.HeaderItemDNDManager of variable instance does not match with type java.lang.String of variable delimiter
    2Unmatched return delimiter;
    3Unmatched return instance;