带抽象方法的枚举

import org.junit.Test;public class lan {@Testpublic void test(){print(Grade.B);}public void print(Grade g) {String valueString = g.localValue();System.out.println(valueString);}}enum Grade{A("100-90"){public String localValue() {return "优";}},B("89-80"){public String localValue() {return "良";}},C("79-70"){public String localValue() {return "一般";}},D("69-60"){public String localValue() {return "差";}},E("59-0"){public String localValue() {return "不及格";}};private String value;private Grade(String value){this.value = value;}public String getValue(){return this.value;}public abstract String localValue();}