Java Training Course/JT04: Difference between revisions
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* 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 3 | ==Integer Arithmetic== | ||
int st0 = Integer.parseInt(args[0]); // the 1st | * 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 st1 = Integer.parseInt(args[1]); // the 2nd ... | ||
int st2 = st0 + st1; | int st2 = st0 + st1; | ||
| Line 8: | Line 9: | ||
java DupInt 2 -4 | java DupInt 2 -4 | ||
java DupInt 0 -1 | java DupInt 0 -1 | ||
* Bonus question: What will happen if you run the program without any | * Bonus question: What will happen if you run the program without any argument? | ||
[[Java Training Course/JT03|< Previous: JT03]] Main Arguments and String Concatenation<br /> | |||
[[Java Training Course/JT05|> Next: JT05]] Greatest Common Divisor | |||
Latest revision as of 09:54, 24 September 2017
Integer Arithmetic
- Create a file
DupInt.javaby copying the programDupString.javafrom 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?
< Previous: JT03 Main Arguments and String Concatenation
> Next: JT05 Greatest Common Divisor