How to remove a character from a string ?

Source:

public class RemoveCharacter {
   public static void main(String args[]) {
      String str = "This is a java string.";
      System.out.println(str);

      // Remove 3d character
      System.out.println(str.substring(0, 3) + str.substring(3 + 1));
   }
}

Output:

   $ java RemoveCharacter 
   This is a java string.
   Thi is a java string.