Classpath Issue with Java -

Is there any reason I can not run my Java program from within Eclipse when I previously code Insert snippet everything else:

  Classloader sysClassLoader = ClassLoader.getSystemClassLoader (); URL [] urls = (sysClassLoader (URL class loader)) .get URL (); For (int i = 0; i & lt; urls.length; i ++) {System.out.println (url [i] .getFile ()); }