Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Android

Posted by Dylan Merritt
Dylan Merritt
15,682 Points

I just updated Android Studio, and when I try to run my app I'm getting an error that I haven't seen before.

Here is the error being returned when I try to run my app:

Exception in thread "main" java.lang.NoClassDefFoundError: junit/textui/ResultPrinter
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:260)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:116)
Caused by: java.lang.ClassNotFoundException: junit.textui.ResultPrinter
    at java.net.URLClassLoader$1.run(URLClassLoader.java:372)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:360)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    ... 3 more

If anyone can help me fix this it would be greatly appreciated.

2 Answers

Emre Sancaktaroglu
Emre Sancaktaroglu
480 Points
Emre Sancaktaroglu
Emre Sancaktaroglu
480 Points

It's in the Run/Debug Configurations dialog. Disable JUnit and try to compile again.

Dylan Merritt
Dylan Merritt
15,682 Points
Dylan Merritt
Dylan Merritt
15,682 Points

How do I get to that dialog? I can't figure out how to disable JUnit.