Name: joT67522 Date: 12/08/97


Under Netscape, call
ResourceBundle.getBundle("myProperties", Locale.getDefault());

where the server has a file called
   myProperties.class
but no file called
   myProperties_EN_us.class or myProperties_EN.class

After failing the loadClass, ResourceBundle tries to
getResourceAsStream(), which causes a SecurityException
under Netscape (because it tries to do a local disk
access). However, because ResourceBundle catches
Exception (instead of Throwable), failure to load
myProperties_EN_us bubbles up to the application without
looking for either myProperties_EN or myProperties.

//---------Base.java-----------
import java.util.ResourceBundle;
import java.util.MissingResourceException;
public class Base {
   public Base() {
      ResourceBundle bundle = null;
      try {
         bundle = ResourceBundle.getBundle("MyResource");
      }
      catch(MissingResourceException e) {
         System.out.println("Application got exception!");
         e.printStackTrace();
      }
      finally {
         System.out.println("****** LOADED Bundle=" + bundle);
      }
   }
}



//-----------MyResource.java---------
public class MyResource extends java.util.ListResourceBundle {
   public Object[][]getContents() {
      return CONTENTS;
   }
   static private final Object [][] CONTENTS = {
      { "Hello", "hello" },
      { "World", "world" }
   };
}


//---------Test.java-------------
import java.io.*;
import java.util.Vector;
public class Test
{
   public static void main(String [] args)
   {
      ClassLoader loader = new MyClassLoader();
      try {
         Class baseClass = loader.loadClass("Base");
         baseClass.newInstance();
      }
      catch(Exception e) {
         e.printStackTrace();
         return;
      }
      System.out.println("Done!");
  }
}
class MyClassLoader extends ClassLoader {
   protected Class loadClass(String name, boolean resolve) throws ClassNotFoundException {
System.out.println("loadClass:" + name);
      try {
         InputStream is = new FileInputStream(name + ".class");
         byte [] array = new byte[10000];
         int len = is.read(array);
         return defineClass(name, array, 0, len);
      }
      catch(FileNotFoundException fne) {
         return findSystemClass( name );
      }
      catch(Exception e) {
         e.printStackTrace();
         return findSystemClass( name );
      }
   }
    public InputStream getResourceAsStream(String name) {
System.out.println("getResourceAsStream:"+name);
/***********************************************************************
 * BUG: The security manager doesn't allow property files to be loaded
 * This exception gets bubbled up through the
 * ResourceBundle.getBundle() method, so it cannot try looking for
 * the next MyResource*.class file based on the locale
 * securityManager.checkAccess();
 ***********************************************************************/

        throw new SecurityException();

/***********************************************************************
 * BUG: It works just fine if we actually allow access to .properties
 * files and try loading them, as below
 ***********************************************************************/
// return ClassLoader.getSystemResourceAsStream(name);
    }
    public java.net.URL getResource(String name) {
System.out.println("getResource:"+name);
        return ClassLoader.getSystemResource(name);
    }
}



(Review ID: 21439)
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