having a problem with Dr Java

Hi everybody, I m new to Java. I v just installed Dr Java on my computer, but i have problem compiling my files, everytime when i compile, it returns an error says:
1 error found:
File: (no associated file) [line: (no source location)]
Error: java.lang.NoSuchMethodError: com.sun.tools.javac.util.Options.put(Ljava/lang/String;Ljava/lang/String;)V

can anyone help me?