Java Tutorial: Generics in java | Java Generics [How to define a Generic method - printArray] ~ foundjava

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GenericDemo.java 

/*
 * Like generic class, we can create generic method that can accept any type
 * of argument. 
 * 
 * Let’s see a simple example of java generic method to print
 * array elements. We are using here E to denote the element.
 */
public class GenericDemo
{
    public static void main(String[] args)
    {
        Integer[] intArray =
        { 100, 200, 300, 400, 500 };
        
        System.out.println("Printing Integer Array");
        printArray(intArray);

        Character[] charArray =
        { 'J', 'A', 'V', 'A' };

        System.out.println("Printing Character Array");
        printArray(charArray);
    }

    public static <E> void printArray(E[] elements)
    {
        for (E element : elements)
        {
            System.out.println(element);
        }
        System.out.println();
    }
}

Output 

Printing Integer Array
100
200
300
400
500

Printing Character Array
J
A
V
A

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