一文详解Java中枚举类的使用

package 枚举类;

public class Test {
    public static void main(String[] args) {
        ZiChuan AXiu = ZiChuan.ZiChuanXiu;
        System.out.println(AXiu);
    }
}

//自定义枚举类
class ZiChuan{
    //1.声明紫川对象的属性 ：private final 修饰
    private final String name;
    private final String feature;

    //2.私有化类的构造器，并给对象属性赋值
    private ZiChuan(String name, String feature) {
        this.name = name;
        this.feature = feature;
    }
    //3.提供当前枚举类的多个对象：public static final 修饰
    public static final ZiChuan ZiChuanXiu = new ZiChuan("紫川秀","纨绔不正经，待人真诚");
    public static final ZiChuan DiLin = new ZiChuan("帝林","足智多谋，心狠手辣");
    public static final ZiChuan SiTeLin = new ZiChuan("斯特林","刚直不阿，铁面无私");

    //重写toString
    @Override
    public String toString() {
        return "ZiChuan{" +
                "name='" + name + '\'' +
                ", feature='" + feature + '\'' +
                '}';
    }
}

package 枚举类;

public class Demo {
    public static void main(String[] args) {
        ZiChuan AXiu = ZiChuan.ZiChuanXiu;
        System.out.println(AXiu.toString()); // toString方法输出枚举类对象常量的名称，toString来自java.lang.Enum类

        System.out.println("------------");
        // values方法返回枚举类的对象数组
        ZiChuan[] values = ZiChuan.values();
        for(ZiChuan item : values){
            System.out.println(item);
        }

        System.out.println("------------");
        // valueOf(String objName): 返回枚举类中对象是objName的对象,如果没有则报错
        ZiChuan diLin = ZiChuan.valueOf("DiLin");
        System.out.println(diLin);
    }
}

//使用enum关键字定义枚举类,定义的枚举类默认继承java.lang.Enum类
enum ZiChuan{
    //1.提供当前枚举类的对象,多个对象之间用 "," 隔开，末尾对象 ";" 结束。格式为 对象名（）
    ZiChuanXiu("紫川秀","纨绔不正经，待人真诚"),
    DiLin("帝林","足智多谋，心狠手辣"),
    SiTeLin("斯特林","刚直不阿，铁面无私");

    //2.声明紫川对象的属性 ：private final 修饰
    private final String name;
    private final String feature;

    //3.私有化类的构造器，并给对象属性赋值
    private ZiChuan(String name, String feature) {
        this.name = name;
        this.feature = feature;
    }
}

// 接口
interface Description{
    void description();
}

//使用enum关键字定义枚举类,定义的枚举类默认继承java.lang.Enum类
enum ZiChuan implements Description{
    //1.提供当前枚举类的对象,多个对象之间用 "," 隔开，末尾对象 ";" 结束。格式为 对象名（）
    ZiChuanXiu("紫川秀","纨绔不正经，待人真诚"),
    DiLin("帝林","足智多谋，心狠手辣"),
    SiTeLin("斯特林","刚直不阿，铁面无私");

    //2.声明紫川对象的属性 ：private final 修饰
    private final String name;
    private final String feature;

    //3.私有化类的构造器，并给对象属性赋值
    private ZiChuan(String name, String feature) {
        this.name = name;
        this.feature = feature;
    }

    @Override
    public void description() {
        System.out.println("紫川家族！");
    }
}

// 接口
interface Description{
    void description();
}

//使用enum关键字定义枚举类,定义的枚举类默认继承java.lang.Enum类
enum ZiChuan implements Description{
    //1.提供当前枚举类的对象,多个对象之间用 "," 隔开，末尾对象 ";" 结束。格式为 对象名（）
    ZiChuanXiu("紫川秀","纨绔不正经，待人真诚"){
        @Override
        public void description() {
            System.out.println("老三");
        }
    },
    DiLin("帝林","足智多谋，心狠手辣"){
        @Override
        public void description() {
            System.out.println("老大");
        }
    },
    SiTeLin("斯特林","刚直不阿，铁面无私"){
        @Override
        public void description() {
            System.out.println("老二");
        }
    };

    //2.声明紫川对象的属性 ：private final 修饰
    private final String name;
    private final String feature;

    //3.私有化类的构造器，并给对象属性赋值
    private ZiChuan(String name, String feature) {
        this.name = name;
        this.feature = feature;
    }
}