Insure you have the java development kit (JDK) 8 installed (link) installed for your operating system.

Open a terminal and change directory to the ML-ID3 folder. Then do the following to compile and run:

cd src/
javac Main.java
java Main "../resources/dataSet1/train.dat" "../resources/dataSet1/test.dat"

Note that the first parameter is the training data set and the second is the test data set.

After installing the JDK 8, locate and get the path for the java compiler javac.exe. If you installed jdk-8u101-windows-x64.exe from Oracles website, the the path is likely C:\Program Files\Java\jdk1.8.0_101\bin .

Now, navigate to the ML-ID3 folder in Windows Explorer. To open a command prompt at this location go to File > open command prompt.

Check the java version, this is what my output looks like:

C:\Users\Will\Documents\GitHub\ML-ID3>java -version
java version "1.8.0_101"
Java(TM) SE Runtime Environment (build 1.8.0_101-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.101-b13, mixed mode)

Add the path to the JDK bin so we can run the javac.exe compiler.

C:\Users\Will\Documents\GitHub\ML-ID3>set path=%path%;C:\Program Files\Java\jdk1.8.0_101\bin

Note that setting the path here does not presist. Once you close the command prommpt and open it again, the path variable will need to be set again.

Now compile and run:

C:\Users\Will\Documents\GitHub\ML-ID3>cd ./src
C:\Users\Will\Documents\GitHub\ML-ID3\src>javac Main.java
C:\Users\Will\Documents\GitHub\ML-ID3\src>java Main "../resources/dataSet1/train.dat" "../resources/dataSet1/test.dat"

Again, note that the first parameter is the training data set and the second is the test data set.