How to make this work?

[Aceflare0]

It took me a while to realize how to do it, but thanks to the help of you guys, I got it working with this code. :) (I omitted the rest of my program)

import java.util.Scanner;


class ThisThingIMade {
	public static void main(String[] args) {
	System.out.println("Would you like to play? (Yes/No)");
	Scanner scanner = new Scanner(System.in);

	String yesNo = "Derp";
	do {
	yesNo = scanner.nextLine();
	if(yesNo.equalsIgnoreCase("yes")) {
	System.out.println("What is 7 x 6?");
	} else if(yesNo.equalsIgnoreCase("no")) {
	System.out.println("Giving up already? Panzy...");
	System.out.println("Press enter to exit.");  
	try { System.in.read(); }
	catch(Exception e) {} 
	return;
	} else {
	System.out.println("Please answer yes or no, this program isn't a genius.");
	yesNo = "Derp";
}
	} while(!yesNo.equalsIgnoreCase("yes") && !yesNo.equalsIgnoreCase("no"));

[eRaaaa]

You need a loop. My suggestion would be to use the do-while loop.

Read the tutorial and try it again :-)

[Aceflare0]

Edit: I used do-while and it loops like I want it now, but when you put in yes after you've put an incompatible answer it goes to the next block without sending the next question.


Console:

C:\Documents and Settings\Owner\Desktop\Will's game\Random stuff>java ThisThingI
Made
Would you like to play? (Yes/No)
huh
Please answer yes or no, this program isn't a genius.
yes
42
Woah, ye beat meh.

import java.util.Scanner;


class ThisThingIMade {
	public static void main(String[] args) {
	System.out.println("Would you like to play? (Yes/No)");
	Scanner scanner = new Scanner(System.in);

	String yesNo = scanner.next();
	do {
	if(yesNo.equalsIgnoreCase("yes")) {
	System.out.println("What is 7 x 6?");
	} else if(yesNo.equalsIgnoreCase("no")) {
	System.out.println("Giving up already? Panzy...");
	} else {
	System.out.println("Please answer yes or no, this program isn't a genius.");
	yesNo = scanner.next();
}
	} while(!yesNo.equalsIgnoreCase("yes") && !yesNo.equalsIgnoreCase("no"));

	double fortyTwo = scanner.nextDouble();
	if(fortyTwo == 42) {
	System.out.println("Woah, ye beat meh.");
	} else {
	System.out.println("YOU LOSE!");
		}
	}
}

[DarrylBurke]

Please go through the Forum Rules, particularly the third paragraph.

db

[Ronin]

Hi Aceflare0, welcome to the forums.

The reason you are not seeing the next question is the way the do while loop works. The loop validates the condition after executing the code within it, unlike a do loop which validates the condition before executing the code.

At the end of the loop you ask the user to put their input in again. The do while loop then uses this input to validate the condition.

Post back if you require assistance correcting this issue.

Regards.

[Aceflare0]

Yeah I'm just completely lost now >_<; if the program knows the condition has just then been filled, why does it not then execute the condition's code? How do I make it do it?

[Tolls]

String yesNo = scanner.next();
do {
... handle 'yes' or 'no' ...
   } else {
      System.out.println("Please answer yes or no, this program isn't a genius.");
      yesNo = scanner.next();
   }
} while(!yesNo.equalsIgnoreCase("yes") && !yesNo.equalsIgnoreCase("no"));
double fortyTwo = scanner.nextDouble();
if (fortyTwo == 42) {
   System.out.println("Woah, ye beat meh.");
} else {
   System.out.println("YOU LOSE!");
}

OK, this is the flow it goes through when you input an incorrect value followed by a correct value.
It hits the 'while' with a correct value, so exits, which you don't want.

Since this is doWhile, put the initial read of yes/no inside the do-while, and remove the read at the end.
That will mean it will read only inside the loop and will not read again at the end, which is what's causing your problem.

[harshit shah]

Use try-catch.It will catch any error and you can restart the program by running the method again..
link
link_2

[Tolls]

Try/catch is utterly pointless here.
The OP has almost the correct code, they just need to move where they read the input.

[harshit shah]

Try/catch is utterly pointless here.
The OP has almost the correct code, they just need to move where they read the input.

OP?? whats that?

[SurfMan]

Original Poster

[harshit shah]

Original Poster

okay mate.

[Aceflare0]

Thanks for the help everyone, I got it to work how I wanted and I'm nearly finished with the program, just adding more questions. :3