java二进制对象,从Java中的二进制文件读取序列化的对象？

I have a simple question.

How to read all the contents of the binary file in java ?

I wrote some code but it only retrieves the first object.

Here is my code:

ObjectInputStream in = new ObjectInputStream(new FileInputStream("C:\\Users\\فاطمة\\Downloads\\student.bin"));

Binary b2 = (Binary)in.readObject();

System.out.println("Student ID: " + b2.id);

System.out.println("Student Name: " + b2.name);

System.out.println("Student Grade: " + b2.grade);

in.close();

解决方案

As malinator mentionned, it is bad practice to concatenate serialized objects in a single file, they should be contained in a Collection.

If you do not have access to the code producing the file, there can be 2 situations :

either you know the number of objects, then you can do the right number of ObjectInputStream.readObject() calls, preferably with a for loop

or you don't, then the problem is detecting the end of the file. You could use a while loop coupled with a try/catch(EOFException).