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Q) What are “commandline arguments”? Explain.




A)
->during program execution values (literals) supplied from the commandline to the main method are known as commandline arguments.
->commandline arguments supplied are stored in the string array which is the parameter of JVM understandable main method.
Ex:

class commandlineexample {

       public static void main(String[] args) {
              System.out.println(args[0]);
              for(inti=0;i<args.length;i++)
                     System.out.println(args[i]);

       }

}

Note:
->to supply set of values at different times of java application execution without the need of changing the source code, commandline arguments are used.
->different file names, url, user names and passwords are supplied from the commandline in general.

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