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test/tools/javac/6563143/EqualsHashCodeWarningTest.java@2eb010b6cb22 (annotated)

test/tools/javac/6563143/EqualsHashCodeWarningTest.java

Thu, 31 Aug 2017 15:17:03 +0800

author

aoqi

date

Thu, 31 Aug 2017 15:17:03 +0800

changeset 2525

2eb010b6cb22

parent 1620

3806171b52d8

parent 0

959103a6100f

permissions

-rw-r--r--

merge

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