b3b644438e
8207405: Compiler Tree API support for Switch Expressions (Preview) Support for switch expression, switch with rules and multiple constants for cases. Reviewed-by: jjg, mcimadamore, vromero
21 lines
1.0 KiB
Java
21 lines
1.0 KiB
Java
/*
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* @test /nodynamiccopyright/
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* @bug 4974927 8064464
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* @summary The compiler was allowing void types in its parsing of conditional expressions.
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* @author tball
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*
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* @compile/fail/ref=ConditionalWithVoid.out --enable-preview -source 12 -XDrawDiagnostics ConditionalWithVoid.java
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*/
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public class ConditionalWithVoid {
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public void test(Object o, String s) {
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// Should fail to compile since Object.wait() has a void return type. Poly case.
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System.out.println(o instanceof String ? o.hashCode() : o.wait());
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// Should fail to compile since Object.wait() has a void return type. Standalone case.
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(o instanceof String ? o.hashCode() : o.wait()).toString();
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// Should fail to compile since Object.wait() has a void return type. Poly case.
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System.out.println(switch (s) {case "" -> o.hashCode(); default -> o.wait();});
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// Should fail to compile since Object.wait() has a void return type. Standalone case.
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(switch (s) {case "" -> o.hashCode(); default -> o.wait();}).toString();
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}
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}
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