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

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Ram N

Posts: 2777
Nickname: ramram
Registered: Jul, 2014

Ram N is Java Programmer
Java Tutorial: Generics in java | Java Generics [How to define a Generic method - printArray] Posted: May 16, 2017 7:08 AM
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This post originated from an RSS feed registered with Java Buzz by Ram N.
Original Post: Java Tutorial: Generics in java | Java Generics [How to define a Generic method - printArray]
Feed Title: JAVA EE
Feed URL: http://ramj2ee.blogspot.com/feeds/posts/default?alt=rss
Feed Description: This blog has viedo tutorials and Sample codes related to below Technologies. 1.J2EE 2.Java 3.Spring 4.Hibernate 5.Database 6.Oracle 7.Mysql 8.Design Patterns
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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
Click the below link to download the code:
https://sites.google.com/site/ramj2eev1/home/javabasics/GenericMethodDemo_App.zip?attredirects=0&d=1

Github Link:
https://github.com/ramram43210/Java/tree/master/BasicJava/GenericMethodDemo_App

Bitbucket Link:
https://bitbucket.org/ramram43210/java/src/539015917c8406e4be671410d713073b3971d1a5/BasicJava/GenericMethodDemo_App/?at=master

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