Command Line Argument in java

Command Line Argument :

Sometimes you will want to pass information into a program when you run it. This is accomplished by passing command-line arguments to main( ). 

A command-line argument is the information that directly follows the program’s name on the command line when it is executed. 

To access the command-line arguments inside a Java program is quite easy—they are stored as strings in the String array passed to main( ).

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

---

Try executing this program, as shown here:

java CommandLine this is a test 100 -1

When you do, you will see the following output:

args[0]: this

args[1]: is

args[2]: a

args[3]: test

args[4]: 100

args[5]: -1

But first of all you should have the basic knowledge about command line and how any java program run through command prompt. CLICK HERE to know more.