russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
29 lines
922 B
Java
29 lines
922 B
Java
/*
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* @test /nodynamiccopyright/
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* @bug 8231827
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* @summary Testing pattern matching against the null constant
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* @run main NullsInPatterns
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*/
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import java.util.List;
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public class NullsInPatterns {
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public static void main(String... args) {
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if (null instanceof List t) {
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throw new AssertionError("broken");
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} else {
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System.out.println("null does not match List type pattern");
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}
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//reifiable types not allowed in type test patterns in instanceof:
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// if (null instanceof List<Integer> l) {
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// throw new AssertionError("broken");
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// } else {
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// System.out.println("null does not match List<Integer> type pattern");
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// }
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if (null instanceof List<?> l) {
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throw new AssertionError("broken");
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} else {
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System.out.println("null does not match List<?> type pattern");
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}
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}
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}
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