|
1 /* |
|
2 * @test /nodynamiccopyright/ |
|
3 * @bug 6563143 8008436 8009138 |
|
4 * @summary javac should issue a warning for overriding equals without hashCode |
|
5 * @summary javac should not issue a warning for overriding equals without hasCode |
|
6 * @summary javac, equals-hashCode warning tuning |
|
7 * if hashCode has been overriden by a superclass |
|
8 * @compile/ref=EqualsHashCodeWarningTest.out -Xlint:overrides -XDrawDiagnostics EqualsHashCodeWarningTest.java |
|
9 */ |
|
10 |
|
11 import java.util.Comparator; |
|
12 |
|
13 public class EqualsHashCodeWarningTest { |
|
14 @Override |
|
15 public boolean equals(Object o) { |
|
16 return o == this; |
|
17 } |
|
18 |
|
19 @Override |
|
20 public int hashCode() { |
|
21 return 0; |
|
22 } |
|
23 |
|
24 public Comparator m() { |
|
25 return new Comparator() { |
|
26 @Override |
|
27 public boolean equals(Object o) {return true;} |
|
28 |
|
29 @Override |
|
30 public int compare(Object o1, Object o2) { |
|
31 return 0; |
|
32 } |
|
33 }; |
|
34 } |
|
35 } |
|
36 |
|
37 class SubClass extends EqualsHashCodeWarningTest { |
|
38 @Override |
|
39 public boolean equals(Object o) { |
|
40 return true; |
|
41 } |
|
42 } |
|
43 |
|
44 @SuppressWarnings("overrides") |
|
45 class DontWarnMe { |
|
46 @Override |
|
47 public boolean equals(Object o) { |
|
48 return true; |
|
49 } |
|
50 } |
|
51 |
|
52 class DoWarnMe { |
|
53 @Override |
|
54 public boolean equals(Object o) { |
|
55 return o == this; |
|
56 } |
|
57 } |
|
58 |
|
59 abstract class IamAbstractGetMeOutOfHere { |
|
60 public boolean equals(Object o){return true;} |
|
61 } |
|
62 |
|
63 interface I { |
|
64 public boolean equals(Object o); |
|
65 } |
|
66 |
|
67 enum E { |
|
68 A, B |
|
69 } |
|
70 |
|
71 @interface anno {} |