![]() ![]() The syntax for a generic method includes a type parameter, inside angle brackets, and appears before the method's return type. Static and non-static generic methods are allowed, as well as generic class constructors. ![]() This is similar to declaring a generic type, but the type parameter's scope is limited to the method where it is declared. Generic methods are methods that introduce their own type parameters. Now here the above is the simple POJO which can be used differently at runtime.Ĭollections e.g) List, Set, Hashmap are best examples which will work with different objects as per the declaration of T, but once we declared T as StringĮ.g) HashMap map = new HashMap() Then it will only accept String Class instance objects. OR T can be used as Object type as valid car instance. OR T can be used as Integer type as modelNumber, Here T can be used as String type as CarName So Class represents a class object of specific class type ' T'.Īssume that your class methods has to work with unknown type parameters like below /** Valid Class name during initialization ( HashMap map = new HashMap() ) T is just a symbol, like a variable name (can be any name) declared during writing of the class file. Now what is T ? T is type parameters (also called type variables) delimited by angle brackets (), follows the class name. Class studentClassRef = t.getClass() //Compilation error. Class studentClassRef = t.getClass() Į.g) public void printStudentClassInfo(Class studentClassRef) can be called with Teacher.class ![]() Then a.getClass() = b.getClass() is true. All we know is " All instances of a any class shares the same object of that type of class" ![]()
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