This example code shows how to create and use Generic Method in Java.
Generics are a facility of generic programming that were added to the Java programming language in 2004 within version J2SE 5.0.
Generics allows parameterized type to use with method, class and interface.
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public class GenericMethodTest { // generic method printArray public static void printArray(E[] inputArray) { // Display array elements for (E element : inputArray) { System.out.printf("%s ", element); } System.out.println(); } public static void main(String args[]) { // Create arrays of Integer, Double and Character Integer[] intArray = {1, 2, 3, 4, 5}; Double[] doubleArray = {1.1, 2.2, 3.3, 4.4}; Character[] charArray = {'H', 'E', 'L', 'L', 'O'}; System.out.println("Array integerArray contains:"); printArray(intArray); // pass an Integer array System.out.println("\nArray doubleArray contains:"); printArray(doubleArray); // pass a Double array System.out.println("\nArray characterArray contains:"); printArray(charArray); // pass a Character array } } |