158-139-177

if (classLoader != null) { try { clazz = classLoader.loadClass(helperClass); } catch (ClassNotFoundException ex) { // try next method } }
if (device != null) { try { device.close(); } catch (IOException ioex) { //ignore } }

Clone fragments detected by clone detection tool
File path: /apache-ant-1.7.0/src/org/apache/tools/ant/ProjectHelper.java |  | File path: /apache-ant-1.7.0/src/org/apache/tools/ant/util/FileUtils.java
Method name: `ProjectHelper newHelper(String)` |  | Method name: `void close(OutputStream)`
Number of AST nodes: 3 |  | Number of AST nodes: 3

1

    if (classLoader != null) {↵

1

    if (device != null) {↵

2

                    try {↵

2

                try {↵

3

                        clazz = classLoader.loadClass(helperClass);↵

3

                    ↵

4

        ↵

4

    device.close();↵

5

                } catch (ClassNotFoundException ex) {↵

5

                } catch (IOException ioex) {↵

6

                        // try next method↵

6

                    ↵

7

        ↵

7

    //ignore↵

8

                }↵

8

                }↵

9

                }

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) | 0.2
Clones location | Clones are in different classes
Number of node comparisons | 5

1. {Non-refactorable}

   Mapping Summary
   Number of mapped statements | 2
   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) | 0.5
   Clone type | Type 2

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

   4

       if (classLoader != null)

   4 | if (classLoader != null)
   1 | if (device != null)

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   classLoader | device | VARIABLE_NAME_MISMATCH
   java.lang.ClassLoader | java.io.OutputStream | VARIABLE_TYPE_MISMATCH

   Preondition Violations

   Type java.lang.ClassLoader of variable classLoader does not match with type java.io.OutputStream of variable device
   - Make classes java.lang.ClassLoader and java.io.OutputStream extend a common superclass

   1

       if (device != null)

   5

       try

   5 | try
   2 | try

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   java.lang.ClassNotFoundException | java.io.IOException | SUBCLASS_TYPE_MISMATCH
   ex | ioex | VARIABLE_NAME_MISMATCH
   java.lang.ClassNotFoundException | java.io.IOException | SUBCLASS_TYPE_MISMATCH

   2

       try

   3 | device.close();

   Preondition Violations
   Unmatched statement device.close(); 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

       device.close();

   6

       clazz = classLoader.loadClass(helperClass);

   6 | clazz = classLoader.loadClass(helperClass);

   Preondition Violations
   Unmatched statement clazz=classLoader.loadClass(helperClass); 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

   Precondition Violations (3)
   Row | Violation
   --- | ---
   1 | Type java.lang.ClassLoader of variable classLoader does not match with type java.io.OutputStream of variable device
   2 | Unmatched statement device.close(); 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 statement clazz=classLoader.loadClass(helperClass); 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