jdk-24/test/langtools/tools/javac/lambda/funcInterfaces/NonSAM2.java

/*
 * @test /nodynamiccopyright/
 * @bug 8003280 7170058
 * @summary Add lambda tests
 *   This test is for identifying a non-SAM type: Having more than one methods due to inheritance, and none of them has a subsignature of all other methods
 * @compile/fail/ref=NonSAM2.out -XDrawDiagnostics NonSAM2.java Helper.java
 */

import java.util.List;

interface Foo1 { int getAge(String s);}
interface Bar1 { Integer getAge(String s);}
interface Foo1Bar1 extends Foo1, Bar1 {} //types Bar1 and Foo1 are incompatible; both define getAge(String), but with unrelated return types

interface AC extends A, C {} //name clash: getOldest(List<?>) in C and getOldest(List<Number>) in A have the same erasure, yet neither overrides the other
interface ABC extends A, B, C {} //ok - raw override
interface AD extends A, D {} //name clash: getOldest(List<Integer>) in D and getOldest(List<Number>) in A have the same erasure, yet neither overrides the other

interface Foo2<T> { void m(T arg);}
interface Bar2<S> { void m(S arg);}
interface Foo2Bar2<T1, T2> extends Foo2<T1>, Bar2<T2> {} //name clash: m(S) in Bar and m(T) in Foo have the same erasure, yet neither overrides the other
8003280: Add lambda tests Turn on lambda expression, method reference and default method support Reviewed-by: jjg 2012-11-17 19:01:03 +00:00			`/*`
			`* @test /nodynamiccopyright/`
7170058: Confusing error message from javac when overriding a method from a raw supertype Reviewed-by: mcimadamore 2017-06-01 19:51:26 +00:00			`* @bug 8003280 7170058`
8003280: Add lambda tests Turn on lambda expression, method reference and default method support Reviewed-by: jjg 2012-11-17 19:01:03 +00:00			`* @summary Add lambda tests`
			`* This test is for identifying a non-SAM type: Having more than one methods due to inheritance, and none of them has a subsignature of all other methods`
			`* @compile/fail/ref=NonSAM2.out -XDrawDiagnostics NonSAM2.java Helper.java`
			`*/`

			`import java.util.List;`

			`interface Foo1 { int getAge(String s);}`
			`interface Bar1 { Integer getAge(String s);}`
			`interface Foo1Bar1 extends Foo1, Bar1 {} //types Bar1 and Foo1 are incompatible; both define getAge(String), but with unrelated return types`

			`interface AC extends A, C {} //name clash: getOldest(List<?>) in C and getOldest(List<Number>) in A have the same erasure, yet neither overrides the other`
8008627: Compiler mishandles three-way return-type-substitutability Compiler should not enforce an order in how ambiguous methods should be resolved Reviewed-by: jjg, vromero 2013-06-06 14:33:40 +00:00			`interface ABC extends A, B, C {} //ok - raw override`
8003280: Add lambda tests Turn on lambda expression, method reference and default method support Reviewed-by: jjg 2012-11-17 19:01:03 +00:00			`interface AD extends A, D {} //name clash: getOldest(List<Integer>) in D and getOldest(List<Number>) in A have the same erasure, yet neither overrides the other`

			`interface Foo2<T> { void m(T arg);}`
			`interface Bar2<S> { void m(S arg);}`
			`interface Foo2Bar2<T1, T2> extends Foo2<T1>, Bar2<T2> {} //name clash: m(S) in Bar and m(T) in Foo have the same erasure, yet neither overrides the other`