Java枚举学习之定义和基本特性详解

public enum Position {
    HERE, THERE
}

package com.xiaoxuzhu;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;

/**
 * Description: 
 *
 * @author xiaoxuzhu
 * @version 1.0
 *
 * <pre>
 * 修改记录:
 * 修改后版本	        修改人		修改日期			修改内容
 * 2022/5/4.1	    xiaoxuzhu		2022/5/4		    Create
 * </pre>
 * @date 2022/5/4
 */

public class Reflection {
    public static void main(String[] args) {
        Class<Position> enumClass = Position.class;
        String modifiers = Modifier.toString(enumClass.getModifiers());
        System.out.println("enum类型的修饰符：" + modifiers);
        System.out.println("enum类型的父类：" + enumClass.getSuperclass());
        System.out.println("enum类型的自定义方法：");
        Method[] methods = enumClass.getDeclaredMethods();
        for (Method method : methods) {
            System.out.println(method);
        }
    }
}

public enum Size {
    SMALL, MEDIUM, LARGE
}

public class EnumClass {

    public static void main(String[] args) {
        for (Size size : Size.values()) {
            System.out.println(size + "的序数是：" + size.ordinal());
            System.out.print(size.compareTo(Size.SMALL) + " ");
            System.out.print(size.equals(Size.SMALL) + " ");
            System.out.println(size == Size.SMALL);
            System.out.println(size.name());
            System.out.println("********************");
        }
    }
}

public enum Size2 {
    SMALL("我是小号"), MEDIUM("我是中号"), LARGE("我是大号");
    private String description;

    private Size2(String description) {
        this.description = description;
    }

    public String getDescription() {
        return description;
    }

    public static void main(String[] args) {
        for (Size2 size : Size2.values()) {
            System.out.println(size + ":" + size.getDescription());
        }
    }
}