title: Return numbers from String input, Java
body: <p>I am kind of stumped here and have been trying to figure this out for some time. This is homework, although I want to learn to code regardless. Here I have to convert the string input by the user to uppercase letters, then those uppercase letters to numbers using the phone keypad system(2 = ABC etc.). </p>
  
  <p>I have gotten this far but am unsure as to what my next step should be. Any ideas are greatly appreciated, thanks in advance.</p>
  
  <pre><code>package chapter_9;
  
  import java.util.Scanner;
  
  public class Nine_Seven {
      public static void main(String[] args) {
          Scanner input = new Scanner(System.in);
          System.out.println("Enter a string: ");
          String s = input.next();
  
          // unsure what to do here, know i need some sort of output/return
          // statement
      }
  
      public static int getNumber(char uppercaseLetter) {
          String[] Keypad = new String[10];
          Keypad[2] = "ABC";
          Keypad[3] = "DEF";
          Keypad[4] = "GHI";
          Keypad[5] = "JKL";
          Keypad[6] = "MNO";
          Keypad[7] = "PQRS";
          Keypad[8] = "TUV";
          Keypad[9] = "WXYZ";
  
          for (int i = 0; i &lt; Keypad.length; i++) {
              // unsure what to do here
          }
  
          return (uppercaseLetter);
      }
  }
  </code></pre>