Reading System.in from the Console using Intellij and JUnit

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说谎
说谎 2021-01-23 10:24

The following code works nicely when running the code through a main in Idea

System.in.read()

However the same code inside a junit method is no

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  • 2021-01-23 10:58

    You need to start the IDE with -Deditable.java.test.console=true (e.g. via "Help" > "Edit Custom VM Options..."), see this comment.

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  • 2021-01-23 11:00

    You need to use the Scanner class.

    First import it:

    import java.util.Scanner
    

    Now to use it:

    Scanner scanner = new Scanner(System.in);
    String text = scanner.next();
    scanner.close();
    

    There are more methods like scanner.nextLine(); that you should look at.

    Also you might need to handle some Exceptions here but that's not difficult to figure out.

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