Skip to content

Working With IntelliJ IDEA

This lab will have you install IntelliJ IDEA and open up the project generated from lab 4 so you can start working with it in a proper development environment.

Step 1: Install IDEA

If you haven't already installed IntelliJ IDEA, see these instructions.

Step 2: Open Project

Let's load the project into IDEA.

  • Start IntelliJ IDEA and you'll see a welcome screen that looks like this

Import Project

  • Click on Import Project

  • Navigate to where you generated the project from Lab 4, and select the pom.xml file.

  • On the next screen, click OK to finish the project import.

Step 3: Run AppTest

Let's run the test from within IDEA.

  • Navigate to the AppTest class (1), then click on the double green arrow (2) and select Run 'AppTest'


  • You should see IDEA build your project, run the tests, and show the results of the tests in the bottom panel.

Step 4: Fix Broken Test

If you didn't fix the bonus test from Lab 4, now's your chance.

  • Add the following test to the AppTest class (if you haven't already):
public void greetingSaysHello() {
  App app = new App();
  assertEquals("Hello", app.getGreeting());
  • Re-run all the tests (like you did in Step 3 above).

    Rerun: Button and Shortcut

    You can also re-run the tests by clicking on the Rerun button (see image below), or by using the keyboard shortcut Ctrl+Shift+R (Mac) or Shift+F10 (Windows).

  • If a test fails, look closely at the output and see if you can figure out what went wrong and how to fix it.

  • If you think you fixed it, re-run the tests until they're all green!

Once you've completed the above steps, check in with the instructor to review your code.