June 2018
Beginner
722 pages
18h 47m
English
Content preview from Introduction to Programming
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Methods of primitive type conversion
Casting is not the only way to convert one primitive type to another. Each of the primitive types has a corresponding reference type – a class called a wrapper class of a primitive type.
All wrapper classes are located in the java.lang package:
- java.lang.Boolean
- java.lang.Byte
- java.lang.Character
- java.lang.Short
- java.lang.Integer
- java.lang.Long
- java.lang.Float
- java.lang.Double
Most of them—except the Boolean and Character classes—extend the java.lang.Number class, which has the following abstract method declarations:
- byteValue()
- shortValue()
- intValue()
- longValue()
- floatValue()
- doubleValue()
This means that every Number class child has to implement all of them. Such methods are implemented in the ...
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