例:将Employee对象及数组对象存储在文件中,再读出. 其中age属性不需要序列化

/*
 * 需要序列化的对象必须实现Serializable接口(空接口)
 * 若其中存在不想序列化的属性,加transient关键字
 */
public class Employee implements Serializable{
	private String name;
	private transient int age;   //不将age属性序列化
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public Employee(String name, int age) {
		super();
		this.name = name;
		this.age = age;
	}
}

/*
	 * 若存储多个对象,只需多次调用writeObject()和readObject()方法
	 * 对象按顺序写入和读取
	 */
	@Test
	public void test1() throws FileNotFoundException, IOException, ClassNotFoundException {
		
		Employee e=new Employee("小红", 13);
		File src=new File("io.txt");
		
		//序列化, 将对象存储在文件中
		ObjectOutputStream oos=new ObjectOutputStream(
				new BufferedOutputStream(new FileOutputStream(src)));
		oos.writeObject(e);
		
		//存储一个数组
		int[]  i= {1,2,3,4,5};
		oos.writeObject(i);
		
		oos.flush();
		oos.close();
		
		//反序列化.从文件中读出对象
		ObjectInputStream ois=new ObjectInputStream(
				new BufferedInputStream(new FileInputStream(src)));
		e=(Employee)ois.readObject();
		System.out.println(e.getAge());     //age属性打印出来为0,因为加了transient关键字
		System.out.println(e.getName());
		
		//从文件中读取数组
		i=(int[])ois.readObject();
		System.out.println(Arrays.toString(i));
		
	}