frame1.java~11~

文件拷贝的源码,相信大家都已经看过了吧.给不懂的初学者

package untitled1;

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

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class Frame1 extends JFrame {
  private JPanel contentPane;
  private BorderLayout borderLayout1=new BorderLayout();
  private JPanel jPanel1=new JPanel();
  private JScrollPane jScollPane1=new JScrollPane();
  private JTextArea jTextArea1=new JTextArea();
  private JButton jButton1 = new JButton();
  private JLabel jLabel1=new JLabel();
  private JLabel jLabel2=new JLabel();
  private GridLayout gridLayout=new GridLayout();
  private JTextField jTextField1=new  JTextField();
  private JTextField jTextField2=new  JTextField();
  File infile=null;
  File outfile=null;
  FileInputStream fis=null;
  FileOutputStream fos=null;
  DataInputStream dis=null;
  DataOutputStream dos=null;
  public Frame1() {
   enableEvents(AWTEvent.WINDOW_EVENT_MASK);
   try {
     jbInit();
   }
   catch(Exception e) {
     e.printStackTrace();
   }
 }



  //Component initialization
  private void jbInit() throws Exception  {
    contentPane=(JPanel)this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(292, 206));
    this.setTitle("大文件copy");
    jButton1.setText("Start");


    jLabel1.setMaximumSize(new Dimension(50,18));
    jLabel1.setText("源文件：");
    jLabel2.setText("目标文件：");
    jPanel1.setLayout(gridLayout);
    gridLayout.setColumns(2);
    gridLayout.setRows(2);
    contentPane.add(jPanel1,BorderLayout.NORTH);
    jPanel1.add(jLabel1,null);
    jPanel1.add(jTextField1,null);
    jPanel1.add(jLabel2,null);
    jPanel1.add(jTextField2,null);
    contentPane.add(jScollPane1,BorderLayout.CENTER);
    jScollPane1.getViewport().add(jTextArea1,null);
    contentPane.add(jButton1,BorderLayout.SOUTH);
    jButton1.addActionListener(new java.awt.event.ActionListener(){
      public void actionPerformed(ActionEvent e){
        jButton1_actionPerformed(e);
    }


    });

  }

  //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 jButton1_actionPerformed(ActionEvent e) {
  final int BufferSize=1024;
  byte[] buffer=new byte[BufferSize];
  try{
    infile=new File(this.jTextField1.getText());
    outfile=new File(this.jTextField2.getText());
    if(!outfile.exists())
      outfile.createNewFile();
      fis=new FileInputStream(infile);
      fos=new FileOutputStream(outfile);
      dis=new DataInputStream(fis);
      dos=new DataOutputStream(fos);
      this.jTextArea1.setText("");
      this.jTextArea1.append("Read from file   "+  infile.getAbsolutePath()+"\n");
      this.jTextArea1.append("Write to file    "+   outfile.getAbsolutePath()+"\n");
      int bytes;
      while((bytes=dis.read(buffer,0,BufferSize))!=-1){
        dos.write(buffer,0,bytes);
        this.jTextArea1.append("Read  "+  bytes+  "B"+  "      Write    "+  bytes+  "B"+"\n");

      }
      this.jTextArea1.append("Complete\n");
      dis.close();
      dos.close();





  }
  catch(Exception err){

  }


  }


}