Eclipse doesn't find javax.swing

Question

Eclipse cant find the import javax.swing.JOptionPane

Where is it located and how can i include it?

import javax.swing.JOptionPane;
         


        

Answer 1

The accepted answer did not work for me.

This is how I solved it:

Right-Click on your project, select Properties

Go to Java Build Path

Click Libraries, then Add Library ...

Select JRE System Library

Click on Execution environment and select JavaSE-1.7 or JavaSE-1.8

Click Finish, then Apply and Close.