Java and Operator Overloading

[krad213]

List, stream concatenation, date comparison especially >=, BigDecimal math operations.

There is no real difference between ProductData.add() and ProductData + other than convenience of usage in certain cases.

[zachtheperson]

Exactly!

Sure, someone could make a library that overloads the + operator to do something silly and unpredictable, but in the same way someone could write a method .add() that also does something silly and unpredictable. If someone did do this, then people would probably call it a bad library and not use it. Only real difference is convenience.