public class enumstudy {
public static void main(String[] args) {
//枚举测试1
System.out.println("------Grade------");
Grade g = Grade.A;
System.out.println("g.getValue() = " + g.getValue());
System.out.println("g.getDescription() = " + g.getDescription());
System.out.println("g.getMemo() = " + g.getMemo());
//枚举测试2
System.out.println("------WeekDay------");
WeekDay wd = WeekDay.Mon;
System.out.println("wd.getValue() = " + wd.getValue());
System.out.println("wd.getDescription() = " + wd.getDescription());
System.out.println("wd.getMemo() = " + wd.getMemo());
//枚举常用方法
System.out.println("------------");
System.out.println(Grade.A.name());
System.out.println(Grade.A.ordinal());
System.out.println("------getValue------");
g = Grade.valueOf("A");
System.out.println(g.getValue());
g = Grade.valueOf(Grade.class, "A");
System.out.println(g.getDescription());
System.out.println("------values------");
Grade[] gs = Grade.values();
for (Grade gg: gs) {
System.out.println(" gg.getValue() = " + gg.getValue() + " gg.getDescription() = " + gg.getDescription() + " gg.getMemo() = " + gg.getMemo());
}
}
}
//通过构造函数实现枚举类型的属性应用
enum Grade{
A("优", "100-90", "非常优秀"),B("中", "89-60", "一般"),C("差", "59-0", "比较差");
private String value;
private String description;
private String memo;
private Grade(String value, String description, String memo) {
this.value = value;
this.description = description;
this.memo = memo;
}
public String getValue() {
return value;
}
public String getDescription() {
return description;
}
public String getMemo() {
return memo;
}
}
//通过构造函数和抽象方法实现枚举类型的属性应用
enum WeekDay{
Mon("星期一"){
public String getDescription() {
return "星期一描述";
}
public String getMemo() {
return "星期一备注";
}
},
Tues("星期二"){
public String getDescription() {
return "星期二描述";
}
public String getMemo() {
return "星期二备注";
}
},
Wed("星期三"){
public String getDescription() {
return "星期三描述";
}
public String getMemo() {
return "星期三备注";
}
},
Thur("星期四"){
public String getDescription() {
return "星期四描述";
}
public String getMemo() {
return "星期四备注";
}
},
Fri("星期五"){
public String getDescription() {
return "星期五描述";
}
public String getMemo() {
return "星期五备注";
}
},
Sat("星期六"){
public String getDescription() {
return "星期六描述";
}
public String getMemo() {
return "星期六备注";
}
},
Sun("星期天"){
public String getDescription() {
return "星期天描述";
}
public String getMemo() {
return "星期天备注";
}
};
private String value;
private WeekDay(String value){
this.value = value;
}
public String getValue() {
return value;
}
public abstract String getDescription();
public abstract String getMemo();
}
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