The Jar Of This Class File Belongs To Container Android Private Libraries

I tried so many solutions, and its either non understandable for a beginner level or it doesn't work Here's the problem shown in the picture How to solve it ?

Solution 1:

Jar files are kind of compressed Java code files. You can execute them, but are unable to make any change in them. It seems you clicked some Eclipse function like 'go to definition' or 'edit class', but you can't actually see/edit contents of a jar file.

It is not a problem - it is purposely done like this.