mainframe.java~2~

这是各类实用工具的源码100例

package jtempfiledemo;

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

public class MainFrame extends JFrame {
  private JPanel contentPane;
  private BorderLayout borderLayout1 = new BorderLayout();
  private JScrollPane jScrollPane1 = new JScrollPane();
  private JTextArea jTextArea1 = new JTextArea();
  private JButton jButton1 = new JButton();

  //Construct the frame
  public MainFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(MainFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(400, 162));
    this.setTitle("JTempFileDemo");
    jButton1.setText("Create a  TempFile");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    contentPane.add(jScrollPane1, BorderLayout.CENTER);
    contentPane.add(jButton1,  BorderLayout.SOUTH);
    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 jButton1_actionPerformed(ActionEvent e) {
    File tempFile=null;
    FileOutputStream fos=null;
    PrintStream ps=null;
    try{
      tempFile = File.createTempFile("TempFile",".tmp");
      fos = new FileOutputStream(tempFile);
      ps = new PrintStream(fos);
      ps.print(this.jTextArea1.getText());
    }catch(Exception err){
      err.printStackTrace();
    }
    finally{
      ps.close();
    }


  }
}