What is command line argument?

To passing a value at runtime to main method called command line argument. Any type value we can pass in main array argument.

Example of cammand line argument:


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

Output


	C:\Users\Nature\Desktop\Java>javac Test.java

	//passing a value at runtime to an array in main method.
    
	C:\Users\Nature\Desktop\Java>java Test 1 2 3 4
	args[0]= 1
	args[1]= 2
	args[2]= 3
	args[3]= 4

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