Variables and primitive types Called primitive types, integral and floating point types are the simplest data types in Java. The following program illustrates the integral type, which can hold ...

Covariance and contravariance might seem esoteric, but you'll need these concepts more than ever as the Java language evolves. Get started with type dependency in array types, generic types, and ...

What's the difference between double vs float data types? In this quick tutorial we show how float and double Java types differ, along with guidance on how to choose one over the other.