Thread: Unable to use Same scanner twice

I have been messing around to learn about java
and improving my simple calculator
I used a scanner Once which took doubles
And when i tried to use the Scanner again in later part of program to take another input, it gave me runtime inputmismatch error
Are we supposed to make different references for different inputs?
here is the code

import java.util.*; /* we used the premade classes and sub classes*/
public class spine {
	public static void main(String[] args) {
		System.out.println("enter the numbers followed with a String to end the cycle");
		Scanner TAKER = new Scanner(System.in); //making object to acess Scanner clas
		List<Double> TAKER2 = new ArrayList<Double>(); //makiubg object of List class = new sub class arraylist
		try { //to catch input error
		while (TAKER.hasNext()) {
			TAKER2.add(TAKER.nextDouble()); //this is when i take the first input
		}
		}
		catch (InputMismatchException e) //this is the error we are catching
		{
		}
		//NOW WE TRANSFER THE NO FROM TAKER2 OBJECT TO AN REAL  ARRAY
		Double array[] = new Double[TAKER2.size()]; //setting size of array
		TAKER2.toArray(array);                     //transfering the nos
		System.out.println("ok cool lets proceed");
			System.out.println("enter 1 for addition, 2 - subtracton, 3 - multiplication, 4 - division.");
	int choices = TAKER.nextInt();	//this is when i take the 2nd input and this is where it crashes
	}
	}

I tried to input Integers not strings.
(int choices =TAKER.nextInt()

you can use String token = in.nextLine(); replace nextInt and nextDouble
and then int value=Integer.parseInt(token) and double value= Double.parseDouble(token)

Here Example:

en.verejava.com/?id=20009865410847

Yes it crashes the 2nd time I try to use the scanner and when it crashes even when I input any integer just like it crashed when you input 4
Can you mind explaining me why? I am new to Java and would like to have clear knowledge of basics

Originally Posted by veretimothy

you can use String token = in.nextLine(); replace nextInt and nextDouble
and then int value=Integer.parseInt(token) and double value= Double.parseDouble(token)

Here Example:

en.verejava.com/?id=20009865410847

ty i will give this a try

--- Update ---

Originally Posted by John Joe

Add TAKER.next(); after System.out.println("enter 1 for addition, 2 - subtracton, 3 - multiplication, 4 - division.");

this actually solved it ty. Mind explaining me why it didnt work earlier
but worked when we added
TAKER.next() before adding the code to take input