Getting Started

Java Development Kit (JDK)

• Download JDK 8 and install.

IntelliJ

• Download the latest version of IntelliJ, install, and launch the program.
• Create a new project called CS323:
  • Choose "Java" on the left pane.
  • Make sure the project SDK indicates a java version "1.8.x".
• Right click on the src directory and create a package called utils.
• Right click on the utils package and create a class called Utils.
• Add the following methods to the Utils class:

  static public int getMiddleIndex(int beginIndex, int endIndex)
  {
      return beginIndex + (endIndex - beginIndex) / 2;
  }
  	
  static public void main(String[] args)
  {
      System.out.println(getMiddleIndex(0, 10));
  }
  

• Run the program by choosing [Run -> Run].
• If you see 5 on the console, your program is successfully run.

JUnit Test

• Right click on the utils package and create a class called UtilsTest.
• Add the following method to the UtilsTest class:

  @Test
  void getMiddleIndexTest()
  {
      assertEquals(Utils.getMiddleIndex(0, 10), 5);
  }
  

  • Make sure to include the @Test annotation. You must see @Test in red. Hover over and add JUnit 5.
  • Import the followings:

    import static org.junit.jupiter.api.Assertions.assertEquals;
    import org.junit.jupiter.api.Test;
    

• Run the test by choosing [Run -> Run].
• If you see a green bar with the message "1 test passed", your program passed the unit test.

How to change the JDK version in IntelliJ

• Choose [File -> Project Structure].
• Choose the java version you want for the project SDK. If the java version is not shown, click the New button and add.
• Choose the project language level to the same java version.

Quiz

• Submit Utils.java and UtilsTest.java: https://canvas.emory.edu/courses/32845/assignments/69821