18 lines
483 B
Java
18 lines
483 B
Java
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// enumerations/EnumSwitch.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} Since JDK 14
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public class EnumSwitch {
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enum Signal { GREEN, YELLOW, RED, }
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Signal color = Signal.RED;
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public void change() {
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color = switch(color) {
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case RED -> Signal.GREEN;
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case GREEN -> Signal.YELLOW;
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case YELLOW -> Signal.RED;
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};
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}
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}
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