Taking first uppercase character of a multiple splitted string

So I want to print out the first uppercase character when splitting my String when it reaches a special character.

public static void main(String args[]){
    Scanner sc = new Scanner(System.in);
    String input = sc.nextLine();
    if(input.contains("-")){
        for (int i = 0; i < input.length(); i++){
            String[] parts = input.split("-",2);
            String string1 = parts[0];
            String string2 = parts[1];
            System.out.print(string1.substring(0, 0) + string2.substring(0,0));
            
        }
    }
}

I'll give an example of what I'd like it to do.

> input: Please-WooRk-siR
> output: PW
> input: This-Is-A-Test
> output: TIAT

So only print the first uppercase character of each substring.

This is one way to do it.

      String str = "This-Is-a-Test-of-The-Problem";
      StringBuilder sb = new StringBuilder();
      for (String s : str.split("-")) {
         char c = s.charAt(0);
         if (Character.isUpperCase(c)) {
            sb.append(c);
         }
      }
      System.out.println(sb.toString());