How to run java at the Eclipse prompt

Question

I made a code in java and in it I use " r" that only works at the prompt and I would like to know how to run this code at the prompt by the eclipse itself.

Answer 1

Directly, through the Eclipse, is not possible.
You have to export the application as "Runnable JAR file" and execute it on a command window:

Right-click on your project:
Choosing Runnable JAR file and click on Next.

Select the Launche Configuration and indicate where to save jar.

Click on Finish.

To run open a command window where he kept the jar and execute the following command:

java -jar nomePrograma.jar