Java枚举 自定义枚举 通过enum关键字定义枚举 实现接口 枚举的方法

[code]public class TestEnum1 {
public static void main(String[] args) {

Person man = Person.MAN;
System.out.println(man.toString());
Person woman = Person.WOMAN;
System.out.println(woman);
}
}
//自定义枚举类型
class Person{
//1 属性私有化
private final String name;
private final int age;
//2 构造器私有 化
private Person(String name,int age) {
this.name = name;
this.age = age;
}
//3 创建对象
public final static Person MAN = new Person("小明",20);
public final static Person WOMAN = new Person("小花",23);
@Override
public String toString() {
return "Person [name=" + name + ", age=" + age + "]";
}
}

[code]public class TestEnum2 {
public static void main(String[] args) {
Person1 man = Person1.MAN;
System.out.println(man.info());
Person1 woman = Person1.WOMAN;
System.out.println(woman.info());
}
}
enum Person1{
MAN("小明",20),
WOMAN("小花",24);
//1 属性私有化
private final String name;
private final int age;
//2 构造器私有 化

private Person1(String name,int age) {
this.name = name;
this.age = age;
}
public String info() {
return "Person1 [name=" + name + ", age=" + age + "]";
}
}

注意：创建对象必须放在最枚举类的最前面

[code]interface Interface1{
void show();
}
enum Person1 implements Interface1{
MAN("小明",20){
public void show() {
System.out.println("男人");
}
},
WOMAN("小花",24){
public void show() {
System.out.println("女人");
}
};
//1 属性私有化
private final String name;
private final int age;
//2 构造器私有 化

private Person1(String name,int age) {
this.name = name;
this.age = age;
}
public String info() {
return "Person1 [name=" + name + ", age=" + age + "]";
}
@Override
public void show() {
System.out.println("这是人类");

}
}

[code]//两个常用的方法 values()  valueOf(String)
//values()获取枚举类中的所有对象
Person1[] ps = Person1.values();
for(Person1 p : ps) {
System.out.println(p.info());
}
System.out.println("=============");
//valueOf(对象字符串)获取其中一个
Person1 p1 = Person1.valueOf("MAN");
System.out.println(p1.info());
Person1 p2 = Person1.valueOf("WOMAN");
System.out.println(p2.info());