public static void addLibraryPath(String pathToAdd) throws Exception {
		Field usrPathsField = ClassLoader.class.getDeclaredField("usr_paths");
		usrPathsField.setAccessible(true);

		// get array of paths
		final String[] paths = (String[]) usrPathsField.get(null);

		// check if the path to add is already present
		for (String path : paths) {
			if (path.equals(pathToAdd)) {
				return;
			}
		}

		// add the new path
		final String[] newPaths = Arrays.copyOf(paths, paths.length + 1);
		newPaths[newPaths.length - 1] = pathToAdd;
		usrPathsField.set(null, newPaths);
	}
public static void addLibraryPath ( String pathToAdd ) throws Exception { Field usrPathsField = ClassLoader . class . getDeclaredField ( "usr_paths" ) ; usrPathsField . setAccessible ( true ) ; final String [ ] paths = ( String [ ] ) usrPathsField . get ( null ) ; for ( String path : paths ) { if ( path . equals ( pathToAdd ) ) { return ; } } final String [ ] newPaths = Arrays . copyOf ( paths , paths . length + 1 ) ; newPaths [ newPaths . length - 1 ] = pathToAdd ; usrPathsField . set ( null , newPaths ) ; }
Adds the specified path to the java library path

@param pathToAdd the path to add
@throws Exception