java中enum的应用

package com.demo;

public enum TestEnum {

	A("hello"),
	B("world");

	private String value;

	private TestEnum(String value){
		this.value = value;
	}

	public String getValue(){
        return value;
    }
    @Override
    public String toString() {
			return value;
    }

	public static void main(String[] args){
		System.out.println(TestEnum.valueOf("A"));
		System.out.println(TestEnum.A);
	}

}