21 lines
550 B
Java
21 lines
550 B
Java
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// enumerations/Dominance.java
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// (c)2021 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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// {NewFeature} Preview in JDK 17
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// Compile with javac flags:
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// --enable-preview --source 17
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import java.util.*;
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sealed interface Base {}
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record Derived() implements Base {}
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public class Dominance {
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static String test(Base base) {
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return switch(base) {
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case Derived d -> "Derived";
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case Base b -> "B"; // [1]
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};
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}
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}
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