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Java Language Features: With Modules, Streams, Threads, I/O, and Lambda Expressions by Kishori Sharan

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© Kishori Sharan 2018
Kishori SharanJava Language Featureshttps://doi.org/10.1007/978-1-4842-3348-1_4

4. Generics

Kishori Sharan
(1)
Montgomery, Alabama, USA
 
In this chapter, you will learn:
  • What generics are
  • How to define generic types, methods, and constructors
  • How to define bounds for type parameters
  • How to use wildcards as the actual type parameters
  • How the compiler infers the actual type parameters for generic type uses
  • Generics and their limitations in array creations
  • How the incorrect use of generics may lead to heap pollution
All example programs in this chapter are a member of a jdojo.generics module, as declared in Listing 4-1.
// module-info.java
module jdojo.generics {
    exports com.jdojo.generics;
}
Listing 4-1.
The Declaration of a jdojo.generics ...

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