Can't cope with printing classpath

Asked Sep 29 '20 at 09:43

Active Nov 02 '20 at 00:19

Viewed 79 times

Java 11.0.8 2020-07-14

Code

public class MainApplication {
    public static void main(String[] args) {
        //Get the System Classloader
        ClassLoader sysClassLoader = ClassLoader.getSystemClassLoader();

        //Get the URLs
        URL[] urls = ((URLClassLoader)sysClassLoader).getURLs();

        for(int i=0; i< urls.length; i++)
        {
            System.out.println(urls[i].getFile());
        }      }
}

Stack trace

Connected to the target VM, address: '127.0.0.1:49215', transport: 'socket'
Exception in thread "main" java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader 'bootstrap')
    at com.example.MainApplication.main(MainApplication.java:30)
Disconnected from the target VM, address: '127.0.0.1:49215', transport: 'socket'

I just want to print the classpath. How can I do that?

edited Nov 02 '20 at 00:19

halfer

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asked Sep 29 '20 at 09:43

Trts

Should it not be `ClassLoader loader = MainApplication.class.getClassLoader();` ? – Fullslack Sep 29 '20 at 09:52
I have tried. The same mistake. – Trts Sep 29 '20 at 09:54
1

So from Java 9+ casting the `ClassLoader` to `URLClassLoader` isn't possible anymore. See this for a workaround: https://stackoverflow.com/a/31785767/13211030 – Fullslack Sep 29 '20 at 09:57
https://stackoverflow.com/a/41637409/13348864 (No enough reputation to comment.) – Norman Yi Sep 29 '20 at 10:18

Can't cope with printing classpath

0 Answers0