Creating Exceptions for Test Scores class

I've created a class named TestScores which has a method that gets the average of test numbers I have in an array. I then need to create an InvalidTestScore exception class and rewrite my TestScores class to be able to throw the InvalidTestScore exception. I thougt I was doing everything right, but I get an "actual and formal arguments differ in length error". I'm new to programming so I needs helps

public int getAverage() throws InvalidTestScore < int total = 0; int average = 0; for(int index = 0; index < scores.length; index++) < total += scores[index]; average = total/scores.length; try < if(scores[index] < 0 || scores[index] >100) < throw new InvalidTestScore("Index is " + index + " Score is " + scores[index]); >> catch(InvalidTestScore e) < System.out.println(e.getMessage()); >> return average; >

// This is my InvalidTestScore class, which is in a separate file

 public class InvalidTestScore extends Exception < public InvalidTestScore() < super("Error: Test scores must range from 0 to 100"); >>