mainframe.java

Java编程100例,提供了很多经典实例来说明Java

package jobjectstreamdemo;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;

public class MainFrame extends JFrame {
  private JPanel contentPane;
  private BorderLayout borderLayout1 = new BorderLayout();
  private JPanel jPanel1 = new JPanel();
  private JButton jButton1 = new JButton();
  private JButton jButton2 = new JButton();

  DataObject dataObject = new DataObject("008","Zhou Xingchi","30","HongKong");
  File file = null ;
  FileOutputStream fos = null;
  FileInputStream fis = null;
  ObjectOutputStream oos = null;
  ObjectInputStream ois = null;

//  Hashtable ht = new Hashtable();


  String[][] data = {{"ID","008"},{"Name","Zhou Xingchi"},{"age","30"},{"Address","HongKong"}};

  private JScrollPane jScrollPane1 = new JScrollPane();
  private JTextArea jTextArea1 = new JTextArea();

  //Construct the frame
  public MainFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    for (int i=0;i<data.length;i++){
   //   ht.put(data[i][0],data[i][1]);
      this.jTextArea1.append(data[i][0]+"="+data[i][1]+"\n");

    }



    //setIconImage(Toolkit.getDefaultToolkit().createImage(MainFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(382, 112));
    this.setTitle("JObjectStreamDemo");
    jButton1.setText("Save");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    jButton2.setText("Read");
    jButton2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton2_actionPerformed(e);
      }
    });
    contentPane.add(jPanel1,  BorderLayout.SOUTH);
    jPanel1.add(jButton1, null);
    jPanel1.add(jButton2, null);
    contentPane.add(jScrollPane1,  BorderLayout.CENTER);
    jScrollPane1.getViewport().add(jTextArea1, null);
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void jButton2_actionPerformed(ActionEvent e) {
    this.jTextArea1.setText("");

    try{
      fis =new FileInputStream(file);
      ois = new ObjectInputStream(fis);
      DataObject dataReaded = (DataObject)ois.readObject();
      this.jTextArea1.append(dataReaded.getID()+"\n");
      this.jTextArea1.append(dataReaded.getName()+"\n");
      this.jTextArea1.append(dataReaded.getAge()+"\n");
      this.jTextArea1.append(dataReaded.getAddress()+"\n");
    }catch(Exception err){
      err.printStackTrace();
    }





  }

  void jButton1_actionPerformed(ActionEvent e) {


    try{
      file =  File.createTempFile("DataObject",".tmp");
      fos = new FileOutputStream(file);
      oos = new ObjectOutputStream(fos);
   //   oos.writeObject(ht);
      oos.writeObject(dataObject);

    }catch(Exception err){
      err.printStackTrace();
    }





  }



}