deletefileframe.java

java灵感设计

package deletefile;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import com.borland.jbcl.layout.*;
import java.io.*;
/**
 * <p>Title: Delete File Demo</p>
 * <p>Description: This is a Delete File demo</p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: d6-125</p>
 * @author Liujun
 * @version 1.0
 */

public class DeleteFileFrame extends JFrame {
  JPanel contentPane;
  XYLayout xYLayout1 = new XYLayout();
  JButton jButton1 = new JButton();
  JButton jButton2 = new JButton();
  JTextArea jTextArea1 = new JTextArea();

  //定义要删除的文件集
  File [] source ;

  //Construct the frame
  public DeleteFileFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(DeleteFileFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    jButton1.setText("选择要删除的文件");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    contentPane.setLayout(xYLayout1);
    this.setSize(new Dimension(400, 241));
    this.setTitle("Delete File Frame Demo");
    jButton2.setText("删除文件");
    jButton2.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton2_actionPerformed(e);
      }
    });
    jTextArea1.setBackground(Color.lightGray);
    jTextArea1.setLineWrap(true);
    contentPane.add(jButton1,  new XYConstraints(19, 54, 135, 33));
    contentPane.add(jButton2,  new XYConstraints(20, 118, 135, 33));
    contentPane.add(jTextArea1,           new XYConstraints(167, 15, 209, 203));
  }
  //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) {
      JFileChooser JFileCh = new JFileChooser();//创建文件对话框
      JFileCh.setMultiSelectionEnabled(true);//设置可多选文件属性
    int returnVal = JFileCh.showOpenDialog(this);//显示文件对话框
    if(returnVal == JFileChooser.APPROVE_OPTION){
       source = JFileCh.getSelectedFiles();//得到源文件集
       jTextArea1.setText("选择了文件：\n");
      for(int i=0;i<source.length;i++){//显示选择了的文件列表
       jTextArea1.append(source[i].getPath()+"\n");
       }//end for
    }//end if
    else
        jTextArea1.setText("你没有选择文件");
  }

  void jButton2_actionPerformed(ActionEvent e) {
       for(int k=0;k<source.length;k++){//根据输入的文件集，创建输入流
          String Pass=source[k].getPath();
        try{
          source[k].delete();
          JOptionPane.showMessageDialog(this, "文件删除成功："+Pass);//显示删除成功信息。
          }
      catch(Exception ei)
        {
         JOptionPane.showMessageDialog(this, "捕捉例外:"+ei);//例外，显示出错信息。
        }
        }//end for
  }
}