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

Number Classes

- 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.

For more information about number classes:

- Click this link to view Oracle's documentation: Number Classes
- Level 1 Study Materials: Unit 1