code: private byte[] loadClassBytes(File classFile) throws IOException
  	{
  
  		int size = (int) classFile.length();
  		byte buff[] = new byte[size];
  
  		FileInputStream fis = new FileInputStream(classFile);
  		DataInputStream dis = null;
  
  		try
  		{
  			dis = new DataInputStream(fis);
  			dis.readFully(buff);
  		}
  		finally
  		{
  			if(dis != null)
  				dis.close();
  		}
  
  		return buff;
  	}
docs: Load the class name
  
  @param classPath
  the path of the class
  @return the byte of the class
  @throws IOException