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Tutorials

Java tutorials.

Java Servlet Tutorial, JavaDeveloper's Java Servlet Resources

Submitted by Andr on Wed, 11/03/2010 - 16:29

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Java Servlet Tutorial
Java servlet tutorial. This tutorial was a very early outline of the material that eventually became Core Servlets and JavaServer Pages book.
Java Servlet Tutorial

Java HashMap Example

Submitted by Andr on Wed, 11/03/2010 - 15:42

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import java.util.HashMap;
 
public class HashMapExample{
 
    public static void main(String[] args) {
 
        HashMap myMap = new HashMap();
 
        map.put("1", "A");
        map.put("2", "B");
        map.put("3", "C");
 
        String one = (String) map.get("1");
        System.out.println(one);
    }

Anonymous Array

Submitted by Andr on Wed, 11/03/2010 - 12:54

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Anonymous Array

In java it is perfectly legal to create an anonymous array using the following syntax.

new <type>[] { <list of values>};

Anonymous array example

new int[]{1,2,3};

Tomcat, Apache Tomcat download

Submitted by Andr on Thu, 10/28/2010 - 18:34

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JavaDeveloper's Tomcat Section

Apache Tomcat is free servlet container which has implemented the latest java servlet specification. It is official reference implementation of Java Servlet and Java Server Pages (JSP). You can download tomcat using below given link.

Java Servlet, Java Servlet Resources

Submitted by Andr on Thu, 10/28/2010 - 18:26

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What is Java Servlet?

Java Servlet is a piece of Java code that runs on server. Thus Java servlet is a server side Java component.

How Java Servlet differs from CGI?

Multidimensional Array Example, Java Array Tutorial

Submitted by Andr on Thu, 10/28/2010 - 01:26

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Java Multidimensional Array Example

Multidimensional Array, Java Array Tutorial

Submitted by Andr on Thu, 10/28/2010 - 01:22

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Java Multidimensional Array

In java, multidimensional (array of arrays) can be defined using following syntax.

<type> arrayName[]…[];
or
<type>[]…[] arrayName[];

Where []…[] denotes number of dimension.

Accessing Array Elements, Java Array Tutorial

Submitted by Andr on Thu, 10/28/2010 - 01:19

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Accessing elements of an array

Individual elements of an array can be accessed by specifying index with [] operator, with the following syntax.

arrayName[<index>]

Java Array Initialization

Submitted by Andr on Thu, 10/28/2010 - 01:17

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Java Array Initialization

Once created, array elements can be initialized explicitly using loop or initialization can be combined with the array creation using following syntax.

<type>[] arrayName = { <initialization value list>};

Following is the example of the same.

int [] myIntArray = {1,2,3,4};