The validateJeroo() method takes in an array of Jeroo objects and could throw two different exceptions.

If a Jeroo in the array is null, it will throw an IllegalArgumentException. If a Jeroo is facing North, it will throw an IllegalStateException.

Add two catch clauses to the try block in the method to: Return -1 if any Jeroos are null, or return -2 if any Jeroo is facing North. The method already returns 0 on normal operation.

 

public int callValidateJeroos(Jeroo[] jeroos)
{
   try
   {
       validateJeroos(jeroos);
   }
   return 0;
}