How to convert a string[] of letters to int[]

public class MyTest
{ 
  public static void main( String args[] )
  { 
    String [] sa = { "g", "g", "g", "e", "e", "e", "g", "e", "g", "g" };
    
    int [] ia = to_int(sa);
    for ( int i=0; i< ia.length; ++i)
      System.out.printf("%d, ", ia[i]);
    System.out.println();
  }

  static int [] to_int(String sa[])
  {
    int len = sa.length;
    int [] result = new int[len];

    for(int i = 0; i < len; ++i)
    {
      result[i] = sa[i].equals("e") ? 1 : 0;
    }
    return result;
  }
}