java串行化

1.先建立一个员工类

import java.io.Serializable;

public class Employee implements  Serializable 
{
   int  ID;
   String Name;
   transient float salary;
   public Employee(int id,String name,float salary)
   { 
        this.ID=id;
        this.Name=name;
        this.salary=salary;
   }
   
  
}

2.在main方法中实现串行化

public static void main(String[] args) throws IOException,ClassNotFoundException
	{ 
	 Employee em=new Employee(1,"cetus",5000);
	 
	 try
	   {
		   FileOutputStream fo=new FileOutputStream("h:/data.ser");
		   ObjectOutputStream objs=new ObjectOutputStream(fo);
		   objs.writeObject(em);
		   objs.close();
		   
	   }
	   catch(IOException e)
	   {
         System.out.println(e); 
	   }
	   em=null;
	   try
	   {
	 FileInputStream fis=new FileInputStream("h:/data.ser");
		   ObjectInputStream ois=new ObjectInputStream(fis);
		   em=(Employee)ois.readObject();
		   ois.close();
	   }
	   catch(IOException e)
	   {
		   System.out.println(e); 
	   }
	   
	   System.out.println("Employee Info:"); 
	
	     System.out.println("ID:" + em.ID); 
	
	     System.out.println("Name:" + em.Name); 
	
	     System.out.println("Saraly:" + em.salary); 


	 
	}

summary:
1.用FileOutputStream 创建data.ser文件
2.用objectOutputstream 的writeobjecet(实例)写入数据
3.创建FileInputStream 读取data.ser文件
4.objectinputstream适配器似的读取FileInputStream,用readobject读取对象，要记得转换类型


ps：对于要保密的信息,可以用transient定义