jdk8-mips64-public/langtools: test/tools/javac/6563143/EqualsHashCodeWarningTest.java@3806171b52d8

     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  */

    11 import java.util.Comparator;

    13 public class EqualsHashCodeWarningTest {

    14     @Override

    15     public boolean equals(Object o) {

    16         return o == this;

    17     }

    19     @Override

    20     public int hashCode() {

    21         return 0;

    22     }

    24     public Comparator m() {

    25         return new Comparator() {

    26             @Override

    27             public boolean equals(Object o) {return true;}

    29             @Override

    30             public int compare(Object o1, Object o2) {

    31                 return 0;

    32             }

    33         };

    34     }

    35 }

    37 class SubClass extends EqualsHashCodeWarningTest {

    38     @Override

    39     public boolean equals(Object o) {

    40         return true;

    41     }

    42 }

    44 @SuppressWarnings("overrides")

    45 class DontWarnMe {

    46     @Override

    47     public boolean equals(Object o) {

    48         return true;

    49     }

    50 }

    52 class DoWarnMe {

    53     @Override

    54     public boolean equals(Object o) {

    55         return o == this;

    56     }

    57 }

    59 abstract class IamAbstractGetMeOutOfHere {

    60     public boolean equals(Object o){return true;}

    61 }

    63 interface I {

    64     public boolean equals(Object o);

    65 }

    67 enum E {

    68     A, B

    69 }

    71 @interface anno {}

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