DaniWeb IT Discussion Community - View Single Post - Interpreting JAR's launched with parameters

Re: Interpreting JAR's launched with parameters

Jan 7th, 2009

Now if you have ever written a main, in your Java program, we write it as :-

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public static void main(String args[]) {
public static void main(String args[]) {

Here the args, is an array containing the parameters you provided at the command line.

Consider the following example :-

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public class CommandLineArgEx {
 
    public static void main(String[] args) {
        for(int i=0;i<args.length;i++) {
            System.out.println("Argument Number " + (i+1) + " : " + args[i]);
        }
    }
 
}
public class CommandLineArgEx {

    public static void main(String[] args) {
        for(int i=0;i<args.length;i++) {
            System.out.println("Argument Number " + (i+1) + " : " + args[i]);
        }
    }

}

Following would be the output that you will get :-

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stephen@steve:~/Development/java/daniweb> java CommandLineArgEx ABC Bcd Efg
Argument Number 1 : ABC
Argument Number 2 : Bcd
Argument Number 3 : Efg
stephen@steve:~/Development/java/daniweb>
stephen@steve:~/Development/java/daniweb> java CommandLineArgEx ABC Bcd Efg
Argument Number 1 : ABC
Argument Number 2 : Bcd
Argument Number 3 : Efg
stephen@steve:~/Development/java/daniweb>

So as you see whatever is passed via the command line, is stored in the args[] String array.
Although I have never tried it with a JAR, I do not see why it should not work.

Last edited by stephen84s; Jan 7th, 2009 at 2:12 pm.

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