158-5-201

try { SysProperties c = (SysProperties) super.clone(); c.variables = (Vector) variables.clone(); c.propertySets = (Vector) propertySets.clone(); return c; } catch (CloneNotSupportedException e) { return null; }
try { return loader.findClass(classname); } catch (SecurityException se) { // class found but restricted name; this is // actually the case we're looking for in JDK 1.3+, // so catch the exception and return return null; }

Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/types/CommandlineJava.java |  | File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/condition/HasMethod.java
Method name: `Object clone()` |  | Method name: `Class loadClass(String)`
Number of AST nodes: 5 |  | Number of AST nodes: 2

1

    try {↵

1

    try {↵

2

                    SysProperties c = (SysProperties) super.clone();↵

2

                            return loader.findClass(classname);↵

3

                    c.variables = (Vector) variables.clone();↵

3

                        } catch (Sec↵

4

                    c.propertySets = (Vector) propertySets.clone();↵

5

                    return c;↵

6

                } catch (CloneNotSupportedException e) {↵

4

    urityException se) {↵

5

                            // class found but restricted name; this is↵

6

                            // actually the case we're looking for in JDK 1.3+,↵

7

                            // so catch the exception and return↵

7

                    return null;↵

8

                            return null;↵

8

                }

9

                        }

See real code fragment |  | See real code fragment

Summary
Number of common nesting structure subtrees | 1
Number of refactorable cases | 0
Number of non-refactorable cases | 1
Time elapsed for finding largest common nesting structure subtrees (ms) | 0.1
Clones location | Clones are in different classes
Number of node comparisons | 10

1. {Non-refactorable}

   Mapping Summary
   Number of mapped statements | 1
   Number of unmapped statements in the first code fragment | 4
   Number of unmapped statements in the second code fragment | 1
   Time elapsed for statement mapping (ms) | 0.6
   Clone type | Type 3

   Mapped Statements
   ID | Statement |  | ID | Statement
   --- | --- | --- | --- | ---

   1

       try

   1 | try
   7 | try

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   java.lang.CloneNotSupportedException | java.lang.SecurityException | SUBCLASS_TYPE_MISMATCH
   e | se | VARIABLE_NAME_MISMATCH
   java.lang.CloneNotSupportedException | java.lang.SecurityException | SUBCLASS_TYPE_MISMATCH

   7

       try

   2

       SysProperties c = (SysProperties)super.clone();

   2 | SysProperties c = (SysProperties)super.clone();

   Preondition Violations
   Unmatched statement SysProperties c=(SysProperties)super.clone(); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted

   3

       c.variables = (Vector)variables.clone();

   4

       c.propertySets = (Vector)propertySets.clone();

   5

       return c;

   5 | return c;

   Preondition Violations
   Unmatched return c;

   8 | return loader.findClass(classname);

   Preondition Violations
   Unmatched statement return loader.findClass(classname); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted
   Unmatched return loader.findClass(classname);

   8

       return loader.findClass(classname);

   Precondition Violations (4)
   Row | Violation
   --- | ---
   1 | Unmatched statement SysProperties c=(SysProperties)super.clone(); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted
   2 | Unmatched return c;
   3 | Unmatched statement return loader.findClass(classname); cannot be moved before or after the extracted code, because it throws exception(s) that should be caught by a try block that will be extracted
   4 | Unmatched return loader.findClass(classname);