View source for Java Training Course/JT04

* Create a file <code>DupInt.java</code> by copying the program <code>DupString.java</code> from [[Java Training Course/JT03|JT03]], rename the class and replace lines 3 to 5 with:
        int st0 = Integer.parseInt(args[0]); // the 1st argument on the commandline
        int st1 = Integer.parseInt(args[1]); // the 2nd ...
        int st2 = st0 + st1;
* Compile 
* Predict the output of:
 java DupInt 2 4
 java DupInt 2 -4
 java DupInt 0 -1
* Bonus question: What will happen if you run the program without any argument?
[[Java Training Course/JT03|&lt; Previous: JT03]] Main Arguments and String Concatenation<br />
[[Java Training Course/JT05|&gt; Next: JT05]] Greatest Common Divisor