Getting Started

Java Development Kit (JDK)

• Download the latest version of JDK from here and install.
• Make sure the version is 1.8.x or higher by typing java -version on a terminal.

Eclipse

• Download the latest version of Eclipse from here and install.
• Launch Eclipse by double-clicking the icon.
• If it prompts to specify a working directory, keep the default one (Workspace).
• If it shows a Welcome tab, close the tab.
• Create a new project CS325 by choosing File -> New -> Java Project.
• Create a package utils by right-clicking [CS325] -> New -> Package.
• Create a class MathUtils by right-clicking {utils} -> New -> Class.
• Add the following methods to the MathUtils class:

static public double divide(int numerator, int denominator)
{
    return (double)numerator / denominator;
}
	
static public void main(String[] args)
{
    System.out.println(divide(1, 2));
}

• Run the program by choosing Run -> Run.
• If you see 0.5 on the console, your program is successfully run.

JUnit Test

• Right click on the CS325 project and choose Build Path -> Add Libraries.
• Choose JUnit and add JUnit 4.
• Create a class MathUtilsTest under the utils package.
• Add the following method to the MathUtilsTest class.
• Make sure to include the @Test annotation.

@Test
public void divideTest()
{
    assertEquals(MathUtils.divide(1, 2), 0.5, 0);
}

• Run the test by choosing Run -> Run.
• If you see a green bar, your test is passed.

Quiz

• Login to lab0z.mathcs.emory.edu.
• Create a directory quiz0 under the cs325 directory.
• Put MathUtils.java and MathUtilsTest.java under cs325/quiz0.
• If you are using a Windows machine with no command-line tools:
• Use an FTP client (e.g., FileZilla) to upload your files.
• If you are using a Mac/Linux machine:
• Run the following command (replace yourID with your mathcs ID).

rsync -avc MathUtils.java MathUtilsTest.java yourID@lab0z.mathcs.emory.edu:~yourID/cs325/quiz0/