Question

Use the Main.java file below to read in phrases (entire lines!) and print underscores "_" for each character. Main.java already imports the Scanner class, creates your Scanner object, and reads in the first phrase from the keyboard. Your task is as followed:

import java.util.Scanner;
public class Main {

   public static void main(String[] args) {
       Scanner keyboard = new Scanner(System.in);
       String phrase = keyboard.nextLine();
         
//Your code here!
   }
}

Write a nested loop that allows the user to continuously enter phrases and output underscores for each character of the phrase. End when the user enters "done" (ignoring case).

Ex 1 - Sample Input:

banana
done

Output:

______

Step 2: Once you have this completed, modify your code so that if the character is whitespace, you print a space " " instead of an underscore - Hint: use Character.isWhitespace(YOURCHARHERE) //returns a boolean.

Ex 2 - Sample input:

Go Dawgs
Sic em
Woof Woof Woof
dOnE

Output:

__ _____
___ __
____ ____ ____

Answer 1

Code for step1:

import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    Scanner keyboard = new Scanner(System.in);
    String phrase = keyboard.nextLine();
    while(!phrase.toLowerCase().equals("done")) {
      for (int i = 0; i < phrase.length(); i++) {
        System.out.print("_");
      }
      System.out.println();
      phrase = keyboard.nextLine();
    }
  }
}

output for step1:

Code screenshot for step1:

Step2:

Code:

import java.util.Scanner;

public class Main {

  public static void main(String[] args) {
    Scanner keyboard = new Scanner(System.in);
    String phrase = keyboard.nextLine();
    while (!phrase.toLowerCase().equals("done")) {
      for (int i = 0; i < phrase.length(); i++) {
        if (Character.isWhitespace(phrase.charAt(i))) {
          System.out.print(" ");
        } else {
          System.out.print("_");
        }
      }
      System.out.println();
      phrase = keyboard.nextLine();
    }
  }
}

Output:

Code Screenshot: