O

object equality

An equality criterion that is true if two distinct objects have equal data.

objects

Objects are an individual instance of a class.

one-dimensional

A term used to describe an array with components specified by a single unique index.

operands

The values on which operators operate.

origin

The point with coordinates (0, 0) in a component; the upper-left corner.

overloading

Reuse of a method name in a class.

overriding

Reuse of a method name in an inheritance hierarchy.