枚举的简单使用

public enum Color {
     
    RED(1,"红色"), 
    YELLOW(2,"黄色"),
    BLUE(3,"蓝色");
     
    private int code;
    private String name;
    
    private Color( int code, String name){
        this.code= code;
        this.name = name;      
    }
     
    public int getCode() {
        return code;
    }
     public String getName() {
        return name;
    }
      
}

public class TestColor {
 
    public static void main(String[] args) {
 
        //输出某一枚举的值
        System.out.println( Color.RED );
        System.out.println( Color.RED.getCode() );
        System.out.println( Color.RED.getName() );

        //遍历所有的枚举
        for( Color color : Color.values()){
            System.out.println( color + "  code: " + color.getCode() + "  name: " + color.getName());
        }
        
    }
 
}

RED
1
红色
RED  index: 1  name: 红色
YELLOW  index: 2  name: 黄色
BLUE  index: 3  name: 蓝色