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public enum Color { RED, GREEN, BLANK, YELLOW }
enum Signal { GREEN, YELLOW, RED}public class TrafficLight { Signal color = Signal.RED; public void change() { switch (color) { case RED: color = Signal.GREEN; break; case YELLOW: color = Signal.RED; break; case GREEN: color = Signal.YELLOW; break; } }}
public enum Color { RED("红色", 1), GREEN("绿色", 2), BLANK("白色", 3), YELLO("黄色", 4); // 成员变量 private String name; private int index; // 构造方法 private Color(String name, int index) { this.name = name; this.index = index; } // 普通方法 public static String getName(int index) { for (Color c : Color.values()) { if (c.getIndex() == index) { return c.name; } } return null; } // get set 方法 public String getName() { return name; } public void setName(String name) { this.name = name; } public int getIndex() { return index; } public void setIndex(int index) { this.index = index; }}
public enum Color { RED("红色", 1), GREEN("绿色", 2), BLANK("白色", 3), YELLO("黄色", 4); // 成员变量 private String name; private int index; // 构造方法 private Color(String name, int index) { this.name = name; this.index = index; } //覆盖方法 @Override public String toString() { return this.index+"_"+this.name; }}
public interface Behaviour { void print(); String getInfo();}public enum Color implements Behaviour{ RED("红色", 1), GREEN("绿色", 2), BLANK("白色", 3), YELLO("黄色", 4); // 成员变量 private String name; private int index; // 构造方法 private Color(String name, int index) { this.name = name; this.index = index; }//接口方法 @Override public String getInfo() { return this.name; } //接口方法 @Override public void print() { System.out.println(this.index+":"+this.name); }}
public interface Food { enum Coffee implements Food{ BLACK_COFFEE,DECAF_COFFEE,LATTE,CAPPUCCINO } enum Dessert implements Food{ FRUIT, CAKE, GELATO }}
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