1269-1-3

if (this.month != MonthConstants.DECEMBER) { result = new Month(this.month + 1, this.year); } else { if (this.year < 9999) { result = new Month(MonthConstants.JANUARY, this.year + 1); } else { result = null; } }
if (this.quarter < LAST_QUARTER) { result = new Quarter(this.quarter + 1, this.year); } else { if (this.year < 9999) { result = new Quarter(FIRST_QUARTER, this.year + 1); } else { result = null; } }

Clone fragments detected by clone detection tool
File path: /jfreechart-1.0.10/src/org/jfree/data/time/Month.java |  | File path: /jfreechart-1.0.10/src/org/jfree/data/time/Quarter.java
Method name: `RegularTimePeriod next()` |  | Method name: `RegularTimePeriod next()`
Number of AST nodes: 5 |  | Number of AST nodes: 5

1

    if (this.month != MonthConstants.DECEMBER) {↵

1

    if (this.quarter < LAST_QUARTER) {↵

2

                result = new Month(this.month + 1, this.year);↵

2

                result = new Quarter(this.quarter + 1, this.year);↵

3

            }↵

3

            }↵

4

            else {↵

4

            else {↵

5

                if (this.year < 9999) {↵

5

                if (this.year < 9999) {↵

6

                    result = new Month(MonthConstants.JANUARY, this.year + 1);↵

6

                    result = new Quarter(FIRST_QUARTER, this.year + 1);↵

7

                }↵

7

                }↵

8

                else {↵

8

                else {↵

9

                    result = null;↵

9

                    result = null;↵

10

                }↵

10

                }↵

11

            }

11

            }

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 having the same super class
Number of node comparisons | 10

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) | 0.6
   Clone type | Type 2

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

   4

       if (this.year < 9999)

   4 | if (this.year < 9999)
   4 | if (this.year < 9999)

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   int | short | VARIABLE_TYPE_MISMATCH

   Preondition Violations
   Type int of variable this.year does not match with type short of variable this.year

   4

       if (this.year < 9999)

   5

       result = new Quarter(FIRST_QUARTER, this.year + 1);

   5

       result = new Month(MonthConstants.JANUARY, this.year + 1);

       else

       else

   6

       result = null;

   6 | result = null;
   6 | result = null;

   Differences
   Expression1 | Expression2 | Difference
   --- | --- | ---
   org.jfree.data.time.Month | org.jfree.data.time.Quarter | SUBCLASS_TYPE_MISMATCH

   6

       result = null;

   Precondition Violations (2)
   Row | Violation
   --- | ---
   1 | Type int of variable this.year does not match with type short of variable this.year
   2 | Clone fragment #1 returns variable result with type org.jfree.data.time.Month , while Clone fragment #2 returns variable result with type org.jfree.data.time.Quarter