Java-Generic Constructors

Generic Constructors It is possible for constructors to be generic, even if their class is not. For example, in the following program, ShowValue constructor specifies a parameter of a generic type, even though ShowValue is not a generic class, its constructor is generic. Program Program Source class ShowValue { <T> ShowValue(T ob) { System.out.println(“T Value … Read more…

Java-Generic Method

Generic Method It is possible to declare a generic method that uses one or more type parameters of its own. Furthermore, it is possible to create a generic method that is enclosed within a non-generic class. For example, in the following program declares a non-generic class called ShowDataType and a generic method within that class called … Read more…

Java-Generic with Multiple Parameters

Generic with Multiple Parameters You can declare more than one type parameter in a generic type. To specify two or more type parameters, simply use a comma-separated list. For example, in the following program, TwoGenClass specifies two type parameters : T and V, separated by comma, Because it has two type parameters, two type arguments … Read more…

Java-Generics Safety

Generics Safety Java has always given you the ability to create generalized classes, interfaces, and methods by operating through references of type Object. Because Object is the superclass of all other classes, an Object reference can refer to any type object. Thus, in pre-generics code, generalized classes, interfaces, and methods used Object references to operate … Read more…

Java-Generics

Generics The generics means parameterized types. Parameterized types enable you to create classes, interfaces, and methods in which the type of data upon which they operate is specified as a parameter. Using generics, it is possible to create a single class, that automatically works with different types of data. A class, interface, or method that … Read more…