Object wrappers - PowerPoint PPT Presentation

GENERICS

GENERICS. Generics. Classes and methods can have a type parameter (actually, more than one). The type parameter can be any reference (class) type. (started with Java version 5.0; in C++ as well but much restricted in Java)

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Processing Data in Collections

Chapter 13. Processing Data in Collections. Object Wrappers. Collections can only hold objects. Primitive types ( int , double , float, etc.) are not objects. Primitives must be wrapped in special wrapper objects. Wrappers exist for each of the eight primitive types. What is an iterator?.

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