158-199-212

if (resource.exists()) { try { return FILE_UTILS.getFileURL(resource); } catch (MalformedURLException ex) { return null; } }
try { return (Node) elementAt(i); } catch (ArrayIndexOutOfBoundsException e) { return null; // conforming to NodeList interface }

Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/AntClassLoader.java |  | File path: /apache-ant-1.7.0/src/org/apache/tools/ant/taskdefs/optional/junit/DOMUtil.java
Method name: `URL getResourceURL(File, String)` |  | Method name: `Node item(int)`
Number of AST nodes: 3 |  | Number of AST nodes: 2

1

    if (resource.exists()) {↵

2

                        try {↵

1

    try {↵

3

                            return FILE_UTILS.getFileURL(resource);↵

2

                    return (Node) elementAt(i);↵

4

                        } catch (MalformedURLException ex) {↵

3

                } catch (ArrayIndexOutOfBoundsException e) {↵

5

                            return null;↵

4

                    return null;↵

6

                        }↵

7

        ↵

5

     // conforming to NodeList interface↵

8

                }

6

                }

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) | 0.3
Clones location | Clones are in different classes
Number of node comparisons | 4

1. {Non-refactorable}

   Mapping Summary
   Number of mapped statements | 1
   Number of unmapped statements in the first code fragment | 1
   Number of unmapped statements in the second code fragment | 1
   Time elapsed for statement mapping (ms) | 0.8
   Clone type | Type 2

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

   7

       try

   7 | try
   1 | try

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   java.net.MalformedURLException | java.lang.ArrayIndexOutOfBoundsException | SUBCLASS_TYPE_MISMATCH
   ex | e | VARIABLE_NAME_MISMATCH
   java.net.MalformedURLException | java.lang.ArrayIndexOutOfBoundsException | SUBCLASS_TYPE_MISMATCH

   1

       try

   2 | return (Node)elementAt(i);

   Preondition Violations
   Unmatched return (Node)elementAt(i);

   2

       return (Node)elementAt(i);

   8

       return FILE_UTILS.getFileURL(resource);

   8 | return FILE_UTILS.getFileURL(resource);

   Preondition Violations
   Unmatched statement return FILE_UTILS.getFileURL(resource); 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 FILE_UTILS.getFileURL(resource);

   Precondition Violations (3)
   Row | Violation
   --- | ---
   1 | Unmatched return (Node)elementAt(i);
   2 | Unmatched statement return FILE_UTILS.getFileURL(resource); 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 | Unmatched return FILE_UTILS.getFileURL(resource);