What is the method for running JUnit in the idea?

You can use the following method to run JUnit tests in IntelliJ IDEA.

Find the JUnit test class or test method to be executed. They usually end with `Test` and are marked with JUnit annotations.

Place the cursor on the name of the test class or test method.

Use the shortcut keys `Ctrl + Shift + F10` for Windows/Linux or `Control + Shift + R` for Mac.

If you only want to run a single test method, you can place the cursor on the method’s name and then use the same shortcut to run it.

Another way to run tests is by clicking the gray arrow icon located in the line number area on the left side of the editor. This will run the entire test class.

You can also right-click on the test class or test method and select “Run” or “Debug” to run or debug the test.

No matter which option you choose, IntelliJ IDEA will run the JUnit tests and display the test results and log output.