Java Training Course/JT04: Difference between revisions

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==Integer Arithmetic==
* 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:
* 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 st0 = Integer.parseInt(args[0]); // the 1st argument on the commandline

Latest revision as of 09:54, 24 September 2017

Integer Arithmetic

  • Create a file DupInt.java by copying the program DupString.java from 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?

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