相关疑难解决方法(0)

我正在阅读有关transient和final关键字的内容,我找到了一个答案,我们不能使用带有final关键字的transient关键字.我试过并感到困惑,因为这里工作正常.

import java.io.FileOutputStream;
import java.io.FileInputStream;
import java.io.ObjectOutputStream;
import java.io.ObjectInputStream;
import java.io.Serializable;

public class SerExample{
    public static void main(String... args){
        Student foo = new Student(3,2,"ABC");
        Student koo = new Student(6,4,"DEF");
        try
        {
            FileOutputStream fos = new FileOutputStream("abc.txt");
            ObjectOutputStream oos = new ObjectOutputStream(fos);
            oos.writeObject(foo);
            oos.writeObject(koo);
            oos.close();
            fos.close();
        }
        catch(Exception e){/**/}

        try{
            FileInputStream fis = new FileInputStream("abc.txt");
            ObjectInputStream ois = new ObjectInputStream(fis);
            System.out.println(ois.readObject());
            System.out.println(ois.readObject());
            fis.close();
            ois.close();
        }catch(Exception e){/**/}
    }
}

这是Serializable Student类代码:

class Student implements Serializable{
        private transient final int id;
        private transient …

我有一个实现的类,Serializable我通过一个类型的锁对象来保护这个类的不变量Object.是暂时还是可以有任何不必要的副作用？

代码:

class MyClass implements Serializable{

 private final transient lock = new Object();
  ....
}