java中Serializable接口作用 java中Serializable接口作用详解

import java.io.*;

public class SerializationDemo{

public static void main(String args[]){

//Object serialization 
try{ 
MyClass object1=new MyClass("Hello",-7,2.7e10); 
System.out.println("object1:"+object1); 
FileOutputStream fos=new FileOutputStream("serial"); 
ObjectOutputStream oos=new ObjectOutputStream(fos); 
oos.writeObject(object1); 
oos.flush(); 
oos.close(); 
} 
catch(Exception e){ 
System.out.println("Exception during serialization:"+e); 
System.exit(0); 
}

//Object deserialization 
try{ 
MyClass object2; 
FileInputStream fis=new FileInputStream("serial"); 
ObjectInputStream ois=new ObjectInputStream(fis); 
object2=(MyClass)ois.readObject(); 
ois.close(); 
System.out.println("object2:"+object2); 
} 
catch(Exception e){ 
System.out.println("Exception during deserialization:"+e); 
System.exit(0); 
} 
} 
}

class MyClass implements Serializable{ 
String s; 
int i; 
double d; 
public MyClass(String s,int i,double d){ 
this.s=s; 
this.i=i; 
this.d=d; 
} 
public String toString(){ 
return "s="+s+";i="+i+";d="+d; 
} 
} 

 import java.io.ObjectInputStream; 
 import java.io.ObjectOutputStream; 
 import java.io.Serializable; 
 
 /** 
 * @author Yan Chenyang 
 * 
 * TODO 要更改此生成的类型注释的模板，请转至 
 * 窗口 － 首选项 － Java － 代码样式 － 代码模板 
 */ 
 public class  JFunction implements Serializable{ 
 
 private double[][] bounds; 
 private int vnum; 
 private double result; 
 private String funcname; 
 
 public JFunction(){ 
 super(); 
 this.bounds=null; 
 this.vnum=0; 
 this.result=0.0; 
 this.funcname=null; 
 } 
 
 public JFunction(double[][] bounds){ 
 super(); 
 this.bounds=bounds; 
 this.vnum=bounds[0].length; 
 this.result=0.0; 
 this.funcname="Function 1"; 
 } 
 
 public double Func(double[] var){ 
 
 result=0.0; 
 for(int i=0;i<var.length;i++) 
 result+=var[i]; 
 return result; 
 } 
 
 
 public static JFunction deserialize(ObjectInputStream oin)  
 throws Exception{ 
 
 JFunction f=(JFunction)oin.readObject(); 
     return f; 
 
 } 
 
 public void serialize(ObjectOutputStream oout)  
 throws Exception{ 
 oout.writeObject(this); 
 } 
 
 public String toString(){ 
 return funcname ; 
 
 } 
 /** 
 * @return 返回 funcname。 
 */ 
 public String getFuncname() { 
 return funcname; 
 } 
 /** 
 * @param funcname 要设置的 funcname。 
 */ 
 public void setFuncname(String funcname) { 
 this.funcname = funcname; 
 } 
 } 
 
 public class JFunctionTest0 { 
 
 public static void main(String[] args){ 
 
 double[][] bounds={{-2.048,-2.048},{2.048,2.048}}; 
 JFunction function=new JFunction(bounds); 
 
 Interpreter interpreter=new Interpreter(); 
 
 try { 
 
 double[] x={2.15,1.00}; 
 interpreter.set("var",x); 
 interpreter.source("c:/x.bsh"); 
 System.out.println(interpreter.get("ret")); 
 
 } catch (EvalError e) { 
 // TODO 自动生成 catch 块 
 e.printStackTrace(); 
 } catch (FileNotFoundException e) { 
 // TODO 自动生成 catch 块 
 e.printStackTrace(); 
 } catch (IOException e) { 
 // TODO 自动生成 catch 块 
 e.printStackTrace(); 
 } 
 
 
 FileInputStream in=null; 
     FileOutputStream out=null; 
     ObjectInputStream oin=null; 
     ObjectOutputStream oout=null; 
     
     try{ 
     out = new FileOutputStream("function1.func"); 
     oout = new ObjectOutputStream(out); 
     function.serialize(oout);//序列化 
     oout.close(); 
     oout=null; 
 
     in = new FileInputStream("function1.func"); 
     oin = new ObjectInputStream(in); 
     JFunction tfunction =JFunction.deserialize(oin);//反序列化 
     
     double[] var={2.0,5.0}; 
     
 //    System.out.println(tfunction.Func(var)); 
 //    System.out.println(tfunction);//打印结果 
 //     
     
     }catch(Exception ex){ 
     ex.printStackTrace(); 
     }finally{ 
     try { 
         if (in != null) { 
           in.close(); 
         } 
         if (oin != null) { 
           oin.close(); 
         } 
         if (out != null) { 
           out.close(); 
         } 
         if (oout != null) { 
 
           oout.close(); 
         } 
       } catch (IOException ex1) { 
         ex1.printStackTrace(); 
       } 
     }     
 } 
 }