Title: Key Concept - Number Classes
Course: CPS 189: Java Certification - Review, Practice & Prepare (Development) > Section: Learning Modules

Number classes are provided as wrappers around primitives so that they may be treated as objects.

- Number classes include the following 14 wrapper classes:

- AtomicInteger
- BigDecimal
- Byte
- DoubleAccumulator
- Float
- Long
- LongAdder

- AtomicLong
- BigInteger
- Double
- DoubleAdder
- Integer
- LongAccumulator
- Short

Boxing is the process of wrapping an object around a primitive

Unboxing is the process of unwrapping an object from around a primitive.