Java之枚举笔记(Enum)

package com.simope.ljm;

public class MyEnum {
    
    public static void main(String[] args) {
        
        System.out.println(Color.BLUE.getIndex());
        
        System.out.println(Color.BLUE.getName());
        
        System.out.println(Color.BLUE.getIndex());
        
        System.out.println(Color.PURPLE.ordinal());
        
        System.out.println(Color.RED.getName(1));
        
        System.out.println(Color.RED.toString());
        
    }
    
}

enum Color{
    RED("i am red", 1),
    ORANGE("i am orange", 2),
    YELLOW("i am yellow", 3),
    GREEN("i am green", 4),
    BLUE("i am blue", 5),
    CYAN("i am cyan", 6),
    PURPLE("i am purple", 7);
    
    private String name;
    private int index;

    
    
    private Color(String name, int index) {
        this.name = name;
        this.index = index;
    }
    
    
    public String getName(int index) {
        for (Color c : Color.values()) {
            if (c.getIndex() == index) {
                return c.getName();
            }
        }
        return null;
    }
    

    public String toString() {
        return this.name + " " + this.index;
    }
    
    
    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;
    }
    
}