I'm trying to add scanner inputs into an ArrayList, but I can't exit out the loop after I have entered the inputs. How can I exit this loop after I'm done entering inputs?
ArrayList<String> inputs = new ArrayList<>();
int i = 0;
while(scan.hasNext()){//while there is an hasNext
inputs.add(scan.next());// add to the inputs array of queue
i++;
}scan.close()
;
You can check if the user entered a string with a length of 0, i.e., "", indicating they are done:
import java.util.LinkedList;
import java.util.Queue;
import java.util.Scanner;
class Main {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
Queue<String> queue = new LinkedList<>();
System.out.println("Enter input:");
String input;
while (scan.hasNextLine() && (input = scan.nextLine()).length() != 0) {
queue.add(input);
}
System.out.printf("Queue: %s%n", queue);
}
}
Example Usage:
Enter input:
A
B
C
Queue: [A, B, C]
