Listing classpath throws NullPointerException

Asked Jul 19 '16 at 21:13

Active Jul 19 '16 at 21:13

Viewed 15 times

I have used following code to print the classpath from inside of jar (build with intelliJ):

    URL[] urls = ((URLClassLoader) ClassLoader.getSystemClassLoader()).getURLs();
    for (URL url : urls) {
        System.out.println(url);
    }

However this throws NullPointerException. What am I doing wrong?

edited Jul 19 '16 at 21:13

Andy Turner

asked Jul 19 '16 at 21:13

heky__

*What* throws a `NullPointerException`? Specifically? – Andy Turner Jul 19 '16 at 21:13
@Reimeus but what in this code would throw an NPE? – Andy Turner Jul 19 '16 at 21:16
@AndyTurner I assume `ClassLoader.getSystemClassLoader()` : _The system `ClassLoader` for delegation, or `null` if none_. – Sotirios Delimanolis Jul 19 '16 at 21:16
@Sotirios huh. I'd assumed there would always be a system class loader. TIL. – Andy Turner Jul 19 '16 at 21:18

0 Answers0