Building a simple program with Scanner

Question

Hi i'm learning java. I am building a program that asks the user to input a number from 1 to 10 and calculates the square and sqrt of that number, then asks the user if he wants to pick another number (very simple indeed). I cant get the second part right though, i want a simple Yes or No choice and so as to do that I created a string name = scanner.nextLine(), and an if loop so if string == "Yes" will do the same code as before with a different number. it doesnt catch my input with the string though

Answer 1

Well, here (SoloLearn), you have to input everything at once. I don't know if that's what you're doing. Also, seeing the code might help. Do you have it?

Answer 2

Well, you could copy the program and paste it here, or you could create a hyperlink (copy the address of your code and paste it here)
Or you can make your code public and I can look at it then.

Answer 3

@Leonida17st That sounds like exactly what he was doing. It should be right though...

Answer 4

Okay, so I see a few things here. One is that there should be NO SPACE between Scanner and (); It won't work if there is. So I took that out, and I think I had to add a } at the end, but I may have accidentally deleted one before. I then ran the code with no errors, but it only squared the first number and outputted the second question afterwards. I don't know what is wrong at this point, but I will keep trying!

Answer 5

I tried using ints instead of strings. 1 for yes and 0 for no, and it worked just fine. I don't know what the problem is with comparing strings. I'll look into it.

Answer 6

@Alfred C
Any more luck with it?

Answer 7

For booleans, it shouldn't be hard. Just have the user input be a boolean, and if true, then do something, and if not, then do something else.

Answer 8

any help?

Answer 9

yep sorry, basically the question is how do I create an Yes or No option in java, I tried this:
System.out.println("Continue?");
String answer = input.nextLine();
if (answer == "Yes") {do this code}
else if (answer =="No") {Do that}
But the only thing that outputs is Continue? and wont allow me to input any answer (doesnt give any error tho). is there a way to link codes from the code playground? writing it down here would take a lot

Answer 10

Select case

Answer 11

In c when you take an input of a string, it saves in the string the enter at the end of the input. I dont think that's the problem but it wont hurt to try. I suggest for you to change the input to an int and check for 1 or 0. Hope I helped.

Answer 12

import java.util.Scanner;

class MyClass {
public static void main(String[ ] args) {
String str;
Scanner myVar = new Scanner(System.in);
str=myVar.nextLine();
if(str=="yes")
{
System.out.println("yes");
}
else{
System.out.println("No");
}
}
}
so i created String and get the value of input and then i compared that string to some world in your example -> "yes"
so just change this if ,else statment with thing you want to do

Answer 13

I wrote it here and made it public, with name "Yes / No"

Answer 14

I didnt figure it out how yet, I was told anyways to use boolean instead of strings for the purpose, but I don't know how to use them this way

Answer 15

I tried it, but i could only make it work by inputting "True" instead of "Y" to make the loop again, i don't know if I explained myself.. maybe i should use a char input?