JavaSE8 the use of the base enum enumeration in a switch statement

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Os:windows7 x64
Jdk:jdk-8u131-windows-x64
Ide:eclipse Oxygen Release (4.7.0)

Enum class:

Package blog.jizuiku8;/** * Enum class, JDK1.5 provides new features *  * @author Jizuiku * @version V17.10.03 */public enum Direction {North (" North "), South (" Nam "), West (" West "), East (" East ");//The extension of the private string Content;private Direction (string content) {this.content = Content;} Public String getcontent () {return this.content;}}

Demo class:

Package blog.jizuiku8;/** * Test Enumeration class *  * @author Jizuiku * @version V17.10.03 */public class Demo {public static void Mai N (string[] args) {Direction d = direction.east;switch (d) {case East:System.out.println ("East"); Break;case West: System.out.println ("West"); Break;case North:System.out.println ("North"); Break;case South:System.out.println (" South "); break;default:break;} I can play the east in the switch statement, but the switch statement alone in the east does not come out//what is the principle?}}

Results:

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JavaSE8 the use of the base enum enumeration in a switch statement