class Cls {    private Cls() {}}public class ClassTrouble {    public static void main(String... args) {	try {	    Class<?> c = Class.forName("Cls");	    c.newInstance();  // InstantiationException        // production code should handle these exceptions more gracefully	} catch (InstantiationException x) {	    x.printStackTrace();	} catch (IllegalAccessException x) {	    x.printStackTrace();	} catch (ClassNotFoundException x) {	    x.printStackTrace();	}    }}