Java Projects that will Have You Inspired and Sharpen Your Skills

Business woman working online on a laptop computer - isolatedUpdated by Benter Adede on February 27, 2014

Ten years ago, I walked into my first beginner’s Java class in Kenya as the only girl in the room. I was greatly discouraged by the other students but I wouldn’t give up because I knew I wanted to train in Java programming. I stand today to prove them wrong. Just as I did, anybody can learn java and excel in it! Today, I am a very successful java programmer, due to my training and the wonderful potential that Java has. It was one of the best decisions I ever made, and you can begin your journey to Java excellence as well, with this Introduction to Java Programming course.

To aid in your study, I’d like to share 20 Java project ideas that helped me and will sharpen your skills as well. To start, a little about this amazing programming language:

  • You can develop just about any program using the Java programming language. This is made possible by the fact that Java is an Object Oriented Programming language.
  • Java is not going anywhere. Java has been around for two decades and still going strong. I will not deny that there are times when java development goes down, but at the same time, Java has always responded well. If Google can choose Java for Android apps development, you know that it’s doing well. They have lots of faith in Java.
  • I have yet to find a programming language that is as flexible and greatly sought after by enterprises, both large and small. Plainly speaking, it is a popular programming language.
  • With its open source libraries, java can be used everywhere. Better still, these libraries make it easy, fast, and cost effective to develop a program.
  • Java can work in any platform. This means that you can develop an application that can be used across multiple operating systems.  For example, you can develop a multi-platform program that would run in Windows, Mac OS X, and Linux as well as in browsers. It gets better- you can even develop an application in Windows and it runs in Unix, and vice versa. That is just one thing that makes me love Java so much.

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Learning Java

I was on my computer busily coding away, when my son comes up to and asks, “Mom, what are you up to?” With all the pride in me, I told him, “I’m developing!” He cracked up and laughed for what seemed like forever. I asked him why he was laughing so hard, and he responded by saying that the only development I could possibly be doing is wearing out the keyboard keys! I can’t wait for him to grow up and understand that Java developers are actually engineers!

But we are definitely not going to wait for him to grow up to vamp up some cool Java project Ideas that will most undeniably sharpen your skills and go a long way in aiding you gain your certification. Some of these ideas can also fetch you good money if you decide to commercialize them.

1. Internet Banking

Let’s begin with a popular idea. Have you ever been away from home and needed to do some banking transactions and you couldn’t because you were away? Say, in a different location, country, or continent? Banks are doing quite well in harnessing technology in order to improve their efficiency, services, and products. Internet banking is not a strange concept; today there is easy access through PCs and phones. Banks are using this to their advantage; they can now receive instructions and deliver the same to their clients. Students who take up Internet Banking projects, more often than not, gain a competitive edge in the job marketplace.

Simple Java Text Editor

Why would anyone want to create a text Editor? There are countless text editors out there that you could use! Ah but, not all of them are customized and unique. Programming instructors will always encourage you to take up this project because it can be simple as well as challenging.

Think of creating a text editor that can be used in any platform so you don’t have to stick to creating a Windows desktop application. Make it original and unique; remember this is one of the simplest and popular programming projects you can undertake. Think of something that will do more than just create, edit and open files.

My personal motto: The greater the challenge, the greater the gain.

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Web Server

When I hear of web servers, what comes to mind is this stupid joke:

“Web Services are like teenage sex. Everyone is talking about it, but not many people are actually doing it, and the people that are doing it, aren’t doing it well!”

Think that’s true? Maybe you can develop the next great web service. All jokes aside, learning the secrets of Java for Android is one great way to get started with Web Server development projects. It would be a lot of fun to develop a program that would stream videos and/or audios or create and utilize a server side scripting language. Anyone can come up with these applications as long as they have interest. You will notice once you register for the Java courses, that you can come up with basic, bare-bones web server that can serve HTML webpages with JavaScript. How cool is that?

If websites is your calling, learn how to create dynamic websites using the Java programming language with this java web application tutorial.

Product Inventory Program

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While browsing the net, my secretary stumbled on this image…. She thought it was a brilliant idea for an inventory project. What do you think? It is the kind of project that can be used in any industry, company, you name it. There is not a single organization that does not use an inventory system. So she started on a small project that would:

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That’s not all, she is also going to implement:

  • A graphical dashboard with charts and graphs indicating quantities of different products,
  • A notification system to warn you about low levels of a particular product,
  • Include additional details such as manufacturer name, shipper details, and so forth.

She learned to do all these from an online Java Course dubbed Java Fundamental with Udemy. I would recommend anyone who wants an online java course to try this one. It is worth every penny and if I’m not careful, my secretary will get better in programming than I am.

Hotel Reservation System

Most people have tried a Hotel Reservation system in programming. This is the ultimate Java project to embark on. It has a couple of modules in there and so your chance of learning a whole lot is inevitable. This was the second project I undertook while I was learning Java and when I was done, I felt like a genius. My application had a few bugs which made the project even more fun. I learned so much programming just by doing this one project.

Some of the requirements that you should strive to meet while undertaking this project include:

  • Prompt for user’s current requirements (room preference and dates of booking).
  • Match user’s requirements with currently available rooms. A hotel will likely have several variably priced room types – penthouse suites, large rooms with king size beds, single bed rooms, etc.
  • Assign a room to user and record preferences for future use.

If you can include a recorded preference to automatically check the user into a room that fits his/her requirements on future visits, then you are really on top of the game!

WYSIWYG Editor

One day someone sat down and thought, why can’t I get what I see? Then they came up with this brilliant idea, WYSIWYG (What You See Is What You Get.) This is how some people create web pages without writing a single piece of HTML code. I don’t know if this is lazy or absolute genius, if it makes organizations create cool webpages for their websites.

The WYSIWYG editor will enable you to work with web elements such as tables, pictures, and text paragraphs while the editor automatically creates the appropriate HTML code for it. This is definitely not a new or strange concept – Microsoft FrontPage and Dreamweaver are examples of such editors. Every outstanding student can come up with a unique application such as a web-based editor. I hear there are some like Wix or Weebly so it is actually possible to create one.

A good editor would have the following properties:

  • Create new webpage
  • Insert any of these three elements into the web page – a headline, a text box, and an image.
  • Give user ability to move around and reposition any of these elements.
  • Save webpage and generate dynamic HTML code.

If you only have basic knowledge in Java programming then no problem; just enroll in the Advanced Java Programming course and get to learn the Java Collections Framework, Connecting to MySQL Database, Threads, Intro to Java Swing (GUI), and of course, Sockets.

For this project however, it will help you spice things up by adding more a broader feature set such as streaming videos, tables, user comments, contact forms, etc.

Simple Calculator in Java Using Remote Method Invocation

As a plus, here is a project with the source code. Try it out and debug it so that you can come up with one calculator of a kind.

When I created my first calculator, I had no idea that it was the basis of creating even more complex programs. Java project ideas based on this simple source code below are just mind blowing. There is great potential to come up with several games, and even more advanced calculators.

I recently joined Introduction to Java programming for Online learners. You might think I am crazy for I am an expert in Java programming. The reason for this is that I love to go back to the classroom and refresh my knowledge. What I love most about this course is that it is online and so I can study right from my office or at the comfort of my home. I have learned a few tricks in this class… especially with the source code provided, practical examples, and demonstrations.

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Table 1: Simple Calculator in Java Source Code

//mathServer//import java.rmi.*;import java.rmi.Naming.*;import java.rmi.server.*;import java.rmi.registry.*;
import java.net.*;
import java.util.*;

interface mathInterface extends Remote
{
 public int add(int a,int b) throws RemoteException;
 public int subt(int a,int b) throws RemoteException;
 public int mult(int a,int b) throws RemoteException;
 public int div(int a,int b) throws RemoteException;
}

public class mathServer extends UnicastRemoteObject implements
mathInterface

{
                public mathServer() throws RemoteException
                {
                                System.out.println("Initializing Server");
    }
    public int add(int a,int b)
    {
                                return(a+b);
                }
                public int subt(int a,int b)
                    {
                                                return(a-b);
                }
                public int mult(int a,int b)
                    {
                                                return(a*b);
                }
                public int div(int a,int b)
                    {
                                                return(a/b);
                }
                public static void main(String args[])
                {
                                try
                                {
                                mathServer ms=new mathServer();
                                java.rmi.Naming.rebind("MathServ",ms);
                                System.out.println("Server Ready");
                    }
                    catch(RemoteException RE)
                    {
                                                System.out.println("Remote Server Error:"+ RE.getMessage());
                                                System.exit(0);
                                }
                                catch(MalformedURLException ME)
                                {
                                                System.out.println("Invalid URL!!");
                                }
                }
}
//mathClient//
import java.rmi.*;
import java.rmi.registry.*;
import java.awt.*;
import java.awt.event.*;
public class mathClient extends Frame implements ActionListener
{
                Button B1=new Button("Sum");
                Button B2=new Button("Subtract");
                Button B3=new Button("Multiply");
                Button B4=new Button("Divide");
                Label l1=new Label("Number 1");
                Label l2=new Label("Number 2");
                Label l3=new Label("Result");
                TextField t1=new TextField(20);
                TextField t2=new TextField(20);
                TextField t3=new TextField(20);
                public mathClient()
                {
                                super("Calculator");
                                setLayout(null);
                                l1.setBounds(20,50,55,25);
                                add(l1);
                                l2.setBounds(20,100,55,25);
                                add(l2);
                                l3.setBounds(20,150,55,25);
                                add(l3);
                                t1.setBounds(150,50,100,25);
                                add(t1);
                                t2.setBounds(150,100,100,25);
                                add(t2);
                                t3.setBounds(150,150,100,25);
                                add(t3);
                                B1.setBounds(20,200,80,25);
                                add(B1);
                                B2.setBounds(100,200,80,25);
                                add(B2);
                                B3.setBounds(180,200,80,25);
                                add(B3);
                                B4.setBounds(260,200,80,25);
                                add(B4);
                                B1.addActionListener(this);
                                B2.addActionListener(this);
                                B3.addActionListener(this);
                                B4.addActionListener(this);
                                addWindowListener(
                                                new WindowAdapter()
                                                                {
                                                                                public void windowClosing(WindowEvent e)
                                                                                {
                                                                                                System.exit(0);
                                                                                }
                                                                }
                                );
                }
                public void actionPerformed(ActionEvent AE)
                {
                                                if(AE.getSource()==B1)
                                                {
                                                                sum();
                                                }
                                                else if(AE.getSource()==B2)
                                                {
                                                                subt();
                                                }
                                                else if(AE.getSource()==B3)
                                                {
                                                                mult();
                                                }
                                                else if(AE.getSource()==B4)
                                                                {
                                                                                                div();
                                                }
                                }
                                public void sum()
                                {
                                                int i=Integer.parseInt(t1.getText());
                                                int j=Integer.parseInt(t2.getText());
                                                int val;
                                                try
                                                {
                                                                String ServerURL="MathServ";
                                                                mathInterface MI=(mathInterface)Naming.lookup(ServerURL);
                                                                val=MI.add(i,j);
                                                                t3.setText(""+val);
                                                }
                                                catch(Exception ex)
                                                {
                                                                System.out.println("Exception:"+ex);
                                                }
                                }
                                public void subt()
                                {
                                                int i=Integer.parseInt(t1.getText());
                                                int j=Integer.parseInt(t2.getText());
                                                int val;
                                                try
                                                {
                                                                String ServerURL="MathServ";
                                                                mathInterface MI=(mathInterface)Naming.lookup(ServerURL);
                                                                val=MI.subt(i,j);
                                                                t3.setText(""+val);
                                                }
                                                catch(Exception ex)
                                                {
                                                                System.out.println("Exception:"+ex);
                                                }
                                }
                                public void mult()
                                {
                                                int i=Integer.parseInt(t1.getText());
                                                int j=Integer.parseInt(t2.getText());
                                                int val;
                                                try
                                                {
                                                                String ServerURL="MathServ";
                                                                mathInterface MI=(mathInterface)Naming.lookup(ServerURL);
                                                                val=MI.mult(i,j);
                                                                t3.setText(""+val);
                                                }
                                                catch(Exception ex)
                                                {
                                                                System.out.println("Exception:"+ex);
                                                }
                                }
                                public void div()
                                {
                                                int i=Integer.parseInt(t1.getText());
                                                int j=Integer.parseInt(t2.getText());
                                                int val;
                                                try
                                                {
                                                                String ServerURL="MathServ";
                                                                mathInterface MI=(mathInterface)Naming.lookup(ServerURL);
                                                                val=MI.div(i,j);
                                                                t3.setText(""+val);
                                                }
                                                catch(Exception ex)
                                                {
                                                                System.out.println("Exception:"+ex);
                                                }
                                }
                                public static void main(String args[])
                                {
                                                mathClient MC=new mathClient();
                                                MC.setVisible(true);
                                                MC.setSize(600,500);
                                };
                } 

Going with the same spirit, try the following project ideas too:

  • Automated Ballot Vote
  • Barcode Generation
  • Citizen Card System
  • Contract Labor Management System
  • Data Leakage Detection
  • Doctor Online
  • Exam Suite
  • File Security System
  • Intranet Chatting
  • JOpenIT
  • Lending Tree
  • Load Shedding In Mobile Systems With Mobiqual
  • Medical Image Compression
  • Mobile Phone Tracking
  • Multi-Lingual Website
  • Online Crime file Management
  • Publishing Search Logs
  • Remote Administration using Mobile
  • Text Encryption And Decryption
  • Voyage Management

Some of these projects will require some serious programming skills. Whether you are a new developer or an experienced developer, you will find these online courses absolutely useful.

Java programming using Eclipse: An Introduction: this introductory course is very very very comprehensive. If I had not already been a Java developer, this would be my choice of course to take up. Using the eclipse Integrated Development Environment (IDE) is an absolute thrill!

Intermediate and Advanced Java Programming: knowing how to code and come up with small applications is one thing while implementing these skills in the real world is another. This course has the secret of doing just this!

Advanced Java Programming: I am seriously thinking of teaching this course. Then I can get to pick your brains! Just yesterday, there were already 1.3k students in this course. Everyone seems to be training in this course in order to advance their Java skills. I wouldn’t want to be left behind.

Hopefully these exercises worked for you as it did for me!