Test.java

import java.lang.invoke.SwitchPoint;

public class Test {
  public static void main(String[] args) {
    String str = "two four triple three";
    String ans = "";
    String strArray[] = str.split(" ");
String ans1="";
    System.out.println("String : " + str);
    for (int i = 0; i < strArray.length; i++) {

      switch (strArray[i])
      {
        case "one":
         ans = ans+"1";
         break;
        case "two":
          ans = ans+"2";
          break;
        case "three":
          ans = ans+"3";
          break;
        case "four":
          ans = ans+"4";
          break;
        case "five":
          ans = ans+"5";
          break;
        case "six":
          ans = ans+"6";
          break;
        case "seven":
          ans = ans+"7";
          break;
        case "eight":
          ans = ans+"8";
          break;
        case "nine":
          ans = ans+"9";
          break;
        case "zero":
          ans = ans+"0";
          break;
        case "double":
          switch(strArray[i+1])
          {
            case "one":
              ans1 = "1";
              break;
            case "two":
              ans1 = "2";
              break;
            case "three":
              ans1 = "3";
              break;
            case "four":
              ans1 = "4";
              break;
            case "five":
              ans1 = "5";
              break;
            case "six":
              ans1 = "6";
              break;
            case "seven":
              ans1 = "7";
              break;
            case "eight":
              ans1 = "8";
              break;
            case "nine":
              ans1 = "9";
              break;
            case "zero":
              ans1 = "0";
              break;
          }
          ans= ans+ans1;
          break;
        case "triple":
          switch(strArray[i+1])
          {
            case "one":
              ans1 = "1";
              break;
            case "two":
              ans1 = "2";
              break;
            case "three":
              ans1 = "3";
              break;
            case "four":
              ans1 = "4";
              break;
            case "five":
              ans1 = "5";
              break;
            case "six":
              ans1 = "6";
              break;
            case "seven":
              ans1 = "7";
              break;
            case "eight":
              ans1 = "8";
              break;
            case "nine":
              ans1 = "9";
              break;
            case "zero":
              ans1 = "0";
              break;
          }
          ans= ans+ ans1+ans1;
      }

    }
    // convert string into integer we will use this
    int res = Integer.parseInt(ans);
    System.out.println(res);
    }


}