Generics methods in java example

The methods which can handle different types of arguments are known as generic methods. Types of the argument are specified on method call.

Syntax: generic method includes a type parameter, inside angle brackets and appears before the method’s return type.

public static <T> T identical(T obj){ return returnValue; }

Example:

GenericsTest.java

/** * This class is used to show the use of generics method. * @author javawithease */ class Test { //Generics method public <T> void showItemDetails(T item){ System.out.println("Value of the item: " + item); System.out.println("Type of the item: " + item.getClass().getName()); } }   public class GenericsTest { public static void main(String args[]){ //String type test Test test = new Test(); test.showItemDetails("Test String."); test.showItemDetails(100); } }

Output:

Value of the item: Test String. Type of the item: java.lang.String Value of the item: 100 Type of the item: java.lang.Integer