37 lines
1.1 KiB
Java
37 lines
1.1 KiB
Java
// enums/EnumSets.java
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// (c)2016 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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// Operations on EnumSets
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// {java enums.EnumSets}
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package enums;
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import java.util.*;
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import static enums.AlarmPoints.*;
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public class EnumSets {
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public static void main(String[] args) {
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EnumSet<AlarmPoints> points =
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EnumSet.noneOf(AlarmPoints.class); // Empty set
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points.add(BATHROOM);
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System.out.println(points);
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points.addAll(EnumSet.of(STAIR1, STAIR2, KITCHEN));
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System.out.println(points);
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points = EnumSet.allOf(AlarmPoints.class);
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points.removeAll(EnumSet.of(STAIR1, STAIR2, KITCHEN));
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System.out.println(points);
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points.removeAll(EnumSet.range(OFFICE1, OFFICE4));
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System.out.println(points);
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points = EnumSet.complementOf(points);
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System.out.println(points);
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}
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}
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/* Output:
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[BATHROOM]
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[STAIR1, STAIR2, BATHROOM, KITCHEN]
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[LOBBY, OFFICE1, OFFICE2, OFFICE3, OFFICE4, BATHROOM,
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UTILITY]
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[LOBBY, BATHROOM, UTILITY]
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[STAIR1, STAIR2, OFFICE1, OFFICE2, OFFICE3, OFFICE4,
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KITCHEN]
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*/
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