public?class?ObjectToByteDemo?{
	
	??public?static?void?main(String[]?args){
		??try?{
			ObjectOutputStream?objectWriter?=new?ObjectOutputStream(
			new?FileOutputStream("testFolder/objectTestDemo.txt"));
			StudentDemo?st?=new?StudentDemo("XiaoMing","45398",19);
			StudentDemo?st01?=new?StudentDemo("Chen","87659",22);
			
			objectWriter.writeObject(st);
			objectWriter.writeObject(st01);
			objectWriter.flush();
			objectWriter.close();
			
			ObjectInputStream?objectReader?=?new?ObjectInputStream(?
			new?FileInputStream("testFolder/objectTestDemo.txt"));
			StudentDemo?tmpStu?=(StudentDemo)objectReader.readObject();
			System.out.println(tmpStu);
			//Return?the?object?read?from?the?stream
			StudentDemo?tmpStu01?=(StudentDemo)objectReader.readObject();
			System.out.println(tmpStu01);
		}?catch?(Exception?e)?{
			//?TODO?Auto-generated?catch?block
			e.printStackTrace();
		}
		??
		??
	??}

}

結(jié)果：

StudentDemo?[stuName=XiaoMing,?stuID=45398,?age=19]
StudentDemo?[stuName=Chen,?stuID=87659,?age=22]

不會被覆蓋，可以理解為像read()方法一樣，指針從0開始，偏移一個讀一個對象出來。

不能指定反序列哪一個對象。