Java/Security/Security Applet

Applet write file and policy file

   <source lang="java">

/* From http://java.sun.ru/docs/books/tutorial/index.html */ /*

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/**

* By default, this applet raises a security exception, unless you configure
* your policy to allow applets from its location to write to the file
* "writetest".
*/

import java.applet.Applet; import java.awt.Graphics; import java.io.BufferedOutputStream; import java.io.DataOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; public class WriteFile extends Applet {

 String myFile = "writetest";
 File f = new File(myFile);
 DataOutputStream dos;
 public void init() {
   String osname = System.getProperty("os.name");
 }
 public void paint(Graphics g) {
   try {
     dos = new DataOutputStream(new BufferedOutputStream(
         new FileOutputStream(myFile), 128));
     dos.writeChars("Cats can hypnotize you when you least expect it\n");
     dos.flush();
     g.drawString("Successfully wrote to the file named " + myFile
         + " -- go take a look at it!", 10, 10);
   } catch (SecurityException e) {
     g.drawString("writeFile: caught security exception: " + e, 10, 10);
   } catch (IOException ioe) {
     g.drawString("writeFile: caught i/o exception", 10, 10);
   }
 }

}

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