[DxnadxC]

Hello, I wanted to know if it was possible to restart an application with code. I want to give the user an option to do something again or not. If it is possible, what is the code and where do I insert it?

[burakaltr]

Use

while(true){


//your whole execution block goes here


//In the end, ask if user the wants to exit. If so, break "while"
}

[Sheph]

Going with what burakaltr said, "your whole execution block", or the process you want repeated, warrants its own method. If something needs to be done more than once, you don't want to write the code it performs more than once. If you put it in a method, and use loops, you can do what you want any number of times, with very little code.

[DxnadxC]

Ok I tried that but now typing yes terminates it as well.

[DxnadxC]

This is the code I'm using. It is a program to multiply 2 numbers.

import java.util.Scanner;

public class Multiplication {
	public static void main(String[] args){

		
		while(true){
		

		System.out.println("Type your first number.");

		Scanner sc = new Scanner(System.in);

		String st = sc.next();
		
		int i = sc.nextInt();
		
		System.out.println("Type your second number.");

		int y = sc.nextInt();
		
		for(int j=0; j<=0; j++);

		System.out.println("The answer is...  " + (i * y));
		
		System.out.println("\nWould you like to do another equation?");
		{
			
		Scanner start = new Scanner(System.in);
		String one = start.next();
		
		if(one.equalsIgnoreCase("yes"));
	
		
		if(one.equalsIgnoreCase("no"));
		break;
		
	
		
		}
		
		}}}

[Yosemine]

DxnadxC, on 27 July 2012 - 06:43 PM, said:

This is the code I'm using. It is a program to multiply 2 numbers.

import java.util.Scanner;

public class Multiplication {
	public static void main(String[] args){

		
		while(true){
		

		System.out.println("Type your first number.");

		Scanner sc = new Scanner(System.in);

		String st = sc.next();
		
		int i = sc.nextInt();
		
		System.out.println("Type your second number.");

		int y = sc.nextInt();
		
		for(int j=0; j<=0; j++);

		System.out.println("The answer is...  " + (i * y));
		
		System.out.println("\nWould you like to do another equation?");
		{
			
		Scanner start = new Scanner(System.in);
		String one = start.next();
		
		if(one.equalsIgnoreCase("yes"));
	
		
		if(one.equalsIgnoreCase("no"));
		break;
		
	
		
		}
		
		}}}

You have a semicolon after your if statement. You want something like

if(one.equalsIgnoreCase("no"))
break;

Otherwise the if(one.equalsIgnoreCase("no")); is it's own statement and does nothing. Then break; is a separate statement and should break your loop every time.

Also I personally would delete the if(one.equalsIgnoreCase("yes")); because it doesn't add anything to your code.

[DxnadxC]

Thanks it now works except that you must type the first number twice. Could you tell me where and how to make it so you must only type it once. Thanks in advance.

[Yosemine]

DxnadxC, on 27 July 2012 - 07:30 PM, said:

Thanks it now works except that you must type the first number twice. Could you tell me where and how to make it so you must only type it once. Thanks in advance.

Look at your code for a moment where you entered int i = sc.nextInt();

Do you notice something directly above it that could cause that?

I'd suggest reading up a bit on control flow and objects so you understand them better.

[DxnadxC]

I took out the String and it all works fine now. Thanks to all of you who helped.

[g00se]

No need to create the Scanner any more than once