How are command line arguments accessed and converted in Java?

"The number of arguments provided can be determined using the length property of the array. Specifically, args.length is an integer indicating how many arguments were provided. This does not include the name of the program (class) itself as that is already be known to the programmer. To access any one argument, it will be necessary to index the array. The index for the first argument is zero, thus the first argument is args[0] , the second is args[1] , etc. The last one would be at args[args.length-1] . If a user is expected to provide numbers as input, they’ll need to be converted as the args array are only String types. To convert the arguments you can use parsing methods provided by the Integer and Double classes. An example:\n\n1 //converts the \"first\" command line argument to an integer\n\n2 int x = Integer.parseInt(args[0]);\n\n3 //converts the \"third\" command line argument to a double:\n\n4 double y = Double.parseDouble(args[1]);"