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;
}

}