public enum Color {RED,ORANGE,YELLOW,GREEN,INDIGO,BLUE,PURPLE
}

enum Color {RED,ORANGE,YELLOW,GREEN,INDIGO,BLUE,PURPLE
}
public class Draw{Color c = Color.BLUE;public void draw(){switch(c){case RED:c = Color.RED;break;case ORANGE:c = Color.ORANGE;break;case YELLOW:c = Color.YELLOW;break;case GREEN:c = Color.GREEN;break;case INDIGO:c = Color.INDIGO;break;case BLUE:c = Color.BLUE;break;case PURPLE:c = Color.PURPLE;break;}}
} 

public enum Color {RED(1,"红"),ORANGE(2,"橙"),YELLOW(3,"黄"),GREEN(4,"绿"),INDIGO(5,"靛"),BLUE(6,"蓝"),PURPLE(7,"紫");//成员变量private int sequence;private String name;//构造方法private Color(int sequence, String name) {this.sequence = sequence;this.name = name;}//自定义方法public static String getColorName(int sequence){for (Color c : Color.values()) {if(c.getSequence() == sequence)return c.name;}return null;}//getter&setterpublic int getSequence() {return sequence;}public void setSequence(int sequence) {this.sequence = sequence;}public String getName() {return name;}public void setName(String name) {this.name = name;}
}

public enum Color {RED(1,"红"),ORANGE(2,"橙"),YELLOW(3,"黄"),GREEN(4,"绿"),INDIGO(5,"靛"),BLUE(6,"蓝"),PURPLE(7,"紫");//成员变量private int sequence;private String name;//构造方法private Color(int sequence, String name) {this.sequence = sequence;this.name = name;}//覆盖方法
    @Overridepublic String toString() {return "顺序："+this.sequence+"_颜色名："+this.name;}
}

interface Action{void getDetail();
}
public enum Color implements Action{RED(1,"红"),ORANGE(2,"橙"),YELLOW(3,"黄"),GREEN(4,"绿"),INDIGO(5,"靛"),BLUE(6,"蓝"),PURPLE(7,"紫");//成员变量private int sequence;private String name;//构造方法private Color(int sequence, String name) {this.sequence = sequence;this.name = name;}@Overridepublic void getDetail() {System.out.println("顺序："+this.sequence+"_颜色名："+this.name);}
}

public interface Food {  enum Coffee implements Food{  BLACK_COFFEE,DECAF_COFFEE,LATTE,CAPPUCCINO  }  enum Dessert implements Food{  FRUIT, CAKE, GELATO  }
}