Question: import java.util.Scanner; public class minus { public static void main(String[] args) { Scanner input = new Scanner(System. in ); System. out .println(The number is: );

import java.util.Scanner; public class minus { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.println("The number is: "); String userInput = input.nextLine(); while (userInput != "-1"){ System.out.println(userInput); System.out.println("the number is? "); userInput = String.valueOf(input.nextDouble()); System.out.println("done!"); } }}

I am confused on the while loop using string

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