Java的枚举类型比较

使用“==”

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class Main {
    public static void main(String[] args) throws Exception {

        //测试Integer
        Integer i = new Integer(1111);
        byte[] bytes = object2ByteArray(i);
        Object o = byteArray2Object(bytes);
        System.out.println(i==o);//结果为false

        //测试Enum
        MyEnum m = MyEnum.MyEnum1;
        byte[] bytes1 = object2ByteArray(m);
        Object o1 = byteArray2Object(bytes1);
        System.out.println(m==o1);//结果为true
    }

    //把字节数组反序列化为对象
    public static Object byteArray2Object(byte[] bs) throws Exception{
        ByteArrayInputStream bais = new ByteArrayInputStream(bs);
        ObjectInputStream bis = new ObjectInputStream(bais);
        return bis.readObject();
    }

    //把对象序列化为字节数组
    public static byte[] object2ByteArray(Object o) throws Exception{
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        ObjectOutputStream oos = new ObjectOutputStream(baos);
        oos.writeObject(o);
        return baos.toByteArray();
    }
}
enum MyEnum {
    MyEnum1(1,"枚举1"),
    MyEnum2(2,"枚举2"),
    ;
    private int code;
    private String name;
    MyEnum(int code, String name){
        this.code = code;
        this.name = name;
    }
}