Kuidas toimub HashSet-i lisatud objektide võrdlus?

When adding objects to HashSet, the comparison occurs in two steps:

1. Calculating the hash code: To determine the position in the hash table, the hashCode() method of the object is called.

2. Checking equality: If the cell with this hash code already contains objects, the equals() method is called to check if the new object is equal to any of the already added objects.

If hashCode() of two objects matches, but equals() returns false, both objects are considered different and can be stored in the set.

Therefore, it is important to override the hashCode() and equals() methods so that equal objects have the same hash code and are correctly compared.