private transient String name = "";

Object str = ois.readObject();//用Object接收。readObject方法可能会报classNotFound异常，必须处理

if(strObject instanceof String){//判断

	String strObjecet = (String)str;//强转为String类型

	System.out.println(strObject);

}

import java.io.*;

public class ObjectTest

{

	/**

	*为了演示，先写入流，再从流中读取

	*ObjectInputStream与ObjectOutputStream

	*/

	public static void main(String[] args){

		//输出流

		ByteArrayOutputStream baos = new ByteArrayOutputStream ();

		ObjectOutputStream oos = null;

		try{

		oos = new ObjectOutputStream(baos);

		//操作:写入基础数据类型

		oos.writeUTF("谁言寸草心");

		oos.writeFloat(2.2f);

		//写入引用类型数据

		oos.writeObject("我真的是一个好人");//写入String类型

		Person p = new Person("马云",1000);

		oos.writeObject(p);

		oos.flush();//刷新流

		byte[] datas = baos.toByteArray();//提出数据

		//输入流

		ObjectInputStream ois =

			new ObjectInputStream(

				new ByteArrayInputStream(datas));

		//操作：读取数据-基础类型

		String str = ois.readUTF();

		System.out.println(str);

		float f = ois.readFloat();

		System.out.println(f);

		//读取数据-引用类型

		Object str1 = ois.readObject();

		Object p1 = ois.readObject();

		if(str1 instanceof String){

			String strObject = (String)str1;//强转为String类型

			System.out.println(strObject);

		}

		if(p1 instanceof Person){

			Person p2 = (Person)p1;

			System.out.println("姓名："+p2.getName()+" 工资："+p2.getSalary());

		}

		}catch(ClassNotFoundException e){

			e.printStackTrace();

		}catch(IOException e){

			e.printStackTrace();

		}

	}

}

class Person implements Serializable //实现Serializable接口

{

	private transient String name = "";//使用transient修饰的不会被序列化

	private int salary = 0;

	public Person(){

	}

	public Person(String name,int salary){

		this.name = name;

		this.salary = salary;

	}

	public String getName(){

		return name;

	}

	public int getSalary(){

		return salary;

	}

}