if (_spellValidator == null) { _spellValidator = new Validator(); } return _spellValidator;
if (instance == null) { instance = new ColumbaCmdLineParser(); } return instance;
Clone fragments detected by clone detection tool
File path: /columba-1.4-src/mail/src/main/java/org/columba/mail/spellcheck/cswilly/FileSpellChecker.java File path: /columba-1.4-src/core/src/main/java/org/columba/core/main/ColumbaCmdLineParser.java
Method name: Validator _getSpellValidator() Method name: ColumbaCmdLineParser getInstance()
Number of AST nodes: 3 Number of AST nodes: 3
1
if (_spellValidator == null) {
1
if (
2
            _spellValidator = new Validator();
3
        }
4
        return _spellValidator
2
instance == null) {
3
			instance = new ColumbaCmdLineParser();
4
		}
5
;
5
		return instance;
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)0.3
    Clone typeType 2
    Mapped Statements
    ID Statement ID Statement
    1
    if (_spellValidator == null)
    1
    if (_spellValidator == null)
    1
    if (instance == null)
    Differences
    Expression1Expression2Difference
    _spellValidatorinstanceVARIABLE_NAME_MISMATCH
    org.columba.mail.spellcheck.cswilly.Validatororg.columba.core.main.ColumbaCmdLineParserVARIABLE_TYPE_MISMATCH
    Preondition Violations
    Type org.columba.mail.spellcheck.cswilly.Validator of variable _spellValidator does not match with type org.columba.core.main.ColumbaCmdLineParser of variable instance
    • Make classes org.columba.mail.spellcheck.cswilly.Validator and org.columba.core.main.ColumbaCmdLineParser extend a common superclass
    1
    if (instance == null)
                                                                                  
    2
    instance = new ColumbaCmdLineParser();
    2
    _spellValidator = new Validator();
                                                                          
                                          
    3
    return instance;
    Preondition Violations
    Unmatched return instance;
    3
    return instance;
    3
    return _spellValidator;
    3
    return _spellValidator;
    Preondition Violations
    Unmatched return _spellValidator;
                                                        
    Precondition Violations (3)
    Row Violation
    1Type org.columba.mail.spellcheck.cswilly.Validator of variable _spellValidator does not match with type org.columba.core.main.ColumbaCmdLineParser of variable instance
    2Unmatched return instance;
    3Unmatched return _spellValidator;