Object流

一.object流

 

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
/**
 * 一.Object流
 *        ObjectOutputStream流/ObjectInputStream流
 * 二.补充Externalizable(可外部化的)接口 
 * 作用:手动控制   序列可视化
 * @Override
                public void writeExternal(ObjectOutput out) throws IOException {
                }
                
                @Override
                public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
                }
 * @author 罗摩衔那
 *
 */
public class TestObjectIO {
    public static void main(String[] args) throws ClassNotFoundException {
        T t=new T();
        t.k=8;
        try {//确定输出文件
            FileOutputStream fos=new FileOutputStream("C:/Users/罗摩衔那/Desktop/Object.txt");
            //给输出流套上ObjectOutputStream管道
            ObjectOutputStream oos=new ObjectOutputStream(fos);
            //将指定的对象写入ObjectOutputStream
            oos.writeObject(t);
            oos.flush();
            oos.close();//关闭流
            //从输出文件中读取信息
            FileInputStream fis=new FileInputStream("C:/Users/罗摩衔那/Desktop/Object.txt");
            //写入流上套上ObjectInputStream管道
            ObjectInputStream ois=new ObjectInputStream(fis);
            //从ObjectInputStream读取一个对象
            T tReaded=(T) ois.readObject();
            System.out.println(tReaded.i+" "+tReaded.j+" "+tReaded.d+" "+tReaded.k);
        } catch (IOException e) {
            
            e.printStackTrace();
        }
    }
}
/*
 * serializable(序列化)标记此类可序列化
 */
class T implements Serializable
{
    int i=0;
    int j=9;
    double d=2.3;
    //透明
    transient int k=0;
}