序列化继承(转)

public class SerializableEr implements Serializable{ 

    /**
     * 
    */ 
    private static final long serialVersionUID = 1L; 
    
} 

public class Serial extends SerializableEr { 
    int id; 
    String name; 
    public Serial(int id, String name) { 
        this.id = id; 
        this.name = name; 
    } 
    public String toString() { 
        return "DATA: " + id + " " +name; 
 
    } 
    public static void main(String[] args) { 
        Serial serial=new Serial(1,"4234"); 
        System.out.println("object serial:"+serial);  
        try{ 
            FileOutputStream fos=new FileOutputStream("serialTest.txt");  
           ObjectOutputStream oos=new ObjectOutputStream(fos);  
            oos.writeObject(serial);  
            oos.flush();  
            oos.close();  
        }catch(Exception e){ 
            System.out.println("Exception:"+e);  
        } 
    } 
} 

为一个实现Serializable接口的父类，编写一个能够序列化的子类 子类将自动的实现序列化