Thread: While Loop Problem :(

Hi....can any one please tell me where is the problem in my code? Actually a very simple thing i am trying to do here. User will enter 1/-1 from console. If the user enters -1 then the program will terminate and if the user enters 1 then some other activities will start......i am using the while loop as follows but that is not working:

in my MAIN method i have written:

int choice;   choice = DisplayMenu();   while (choice!=-1){  	System.out.println("\nI am inside while loop !\n");   } System.out.println("\nI am outside while loop ! Program ends...\n");

And in my DISPLAYMENU method i have written:

public static int DisplayMenu() { int choice = 0; System.out.println("\t\t\nPlease choose your option to deal with this system\n\t'1' -> To go into the while loop\n\t'-1' -> To terminate the program\n");	choice = (int)console.next().indexOf(choice); return choice; }

It is urgent....really i will be appreciated if any one can help me to run that while loop correctly and inform me where i was doing mistake...

Regards

try this

import java.io.Console;   public class DisplayMenu {  	public static int DisplayMenu() {	int choice = 0;	Console cons = System.console();	System.out	.println("\t\t\nPlease choose your option to deal with this system\n\t'1' -> To go into the while loop\n\t'-1' -> To terminate the program\n");	String line = cons.readLine();	Integer.parseInt(line);	return choice = Integer.parseInt(line);	}  	public static void main(String[] args) {	DisplayMenu menu = new DisplayMenu();  	int choice;  	choice = menu.DisplayMenu();  	while (choice != -1) {  	System.out.println("\nI am inside while loop !\n");  	}	System.out.println("\nI am outside while loop ! Program ends...\n");	} }

don't start this code inside an ide but only from a os-box with java DisplayMenu

Thanks a lot j2me64...Here i solved that problem in this way:

In the MAIN method i had written:

int choice;   choice = DisplayMenu();   while (choice != -1){	System.out.println("\nI am inside while loop !\n"); } System.out.println("\nThanks for using this program !\n");

And in the DISPLAYMENU method i had written:

public static int DisplayMenu() // User-defined method to display a menu { int choice; System.out.println(" Please select how you want to deal with the system\n '1' -> Go inside of the while loop\n '-1' -> Go outside of the while loop...Program Ends !\n");   Scanner in = new Scanner(System.in); choice=in.nextInt();   return choice; }

And this is running exactly like the way i want too.......