CHP14（周五）.rar

import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; public class MyObjectDemo { public static void main(String[] args) { // TODO Auto-generated method stub new MyObjectDemo(); } public MyObjectDemo(){ //1. 输出 myDateOutputStream(); //2. 输入 myDateInputStream(); } private void myDateInputStream() {//对象的输入 // TODO Auto-generated method stub String filename = "./mydate.dat"; File f = new File(filename); FileInputStream fis; try { fis = new FileInputStream(f); ObjectInputStream ois = new ObjectInputStream(fis);//对象的输入流 //读文件：对象 MyDate mydata = (MyDate)ois.readObject(); mydata.show(); mydata = (MyDate)ois.readObject(); mydata.show(); ois.close(); //while(ois.readLine()!=null){ // ois.readObject(); //} } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } } private void myDateOutputStream() {//对象的输出 // TODO Auto-generated method stub String filename = "./mydate.dat"; File f = new File(filename); FileOutputStream fos; try { fos = new FileOutputStream(f); ObjectOutputStream oos = new ObjectOutputStream(fos);//对象输出流 //写入对象 MyDate mydate1 = new MyDate(2021,6,1); oos.writeObject(mydate1); oos.writeObject(new MyDate(2021,6,2)); //关闭资源 oos.close(); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }