writeapplettest.java

Java程序设计技巧与开发实例附书源代码。

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class WriteAppletTest extends Applet implements ActionListener
{  private Button write = new Button("Write");
   public void init()
   {  setLayout(new FlowLayout());
      add(write); write.addActionListener(this);
   }
   public void writeFile()
   {  try
      {  PrintWriter out = new PrintWriter(new FileWriter("sample.dat"));
         out.println("Java C Pascal");
         out.close();
      }
      catch(IOException ioe)
      {  System.out.println(ioe); }
   }
   public void actionPerformed(ActionEvent ae)
   {  if (ae.getSource() == write)
         writeFile();
   }
}