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We help our clients develop secure, performant, and scalable Java applications.
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We provide custom web, mobile & software-based application consulting services to clients of all sizes. Some of the companies that have chosen Keyhole include:
Recent Java Education
Developers need a deeper understanding of Java language features and capabilities in order to truly use it to its fullest extent. Check out the following Keyhole Software Java-based tutorials to get up-to-speed:
While working with a client recently, my team was given the task to retrieve the held securities and account data from the system and...- I was recently tasked with summarizing the data of a several-million-row table, and the task proved to be a bit grueling at first. Eventually,...
- This article will set up a basic Spring Boot app that incorporates Apache Camel to move some sample files around.If you are like me,...
- Social logins using Oauth2 have become a industry standard. It has revolutionized the way sites share data and has allowed users to quickly access...
- Why should one care about new JDK releases? As most Java developers are acutely aware, most of the industry is still dominated by JDK...
- Some of us take for granted the newer features in Java, but, being a software consultant, I get to be involved in projects that...
- In this blog, we’ll present a simple arithmetic expression parser implemented through an Antlr4 parser generator. It will be able to take in an...
- The last few years have seen a lot of movement to bring applications that don't require manual intervention from the mainframe to Unix, Linux,...
- The Keyhole Software team is excited to announce that we are sponsoring and speaking at the upcoming Kansas City Java User Group on Thursday,...
- When the Microservices approach became popular a few years ago, many companies rushed to build their own microservices or to convert their legacy applications...
- Several years ago, 2012 to be precise, I wrote an article on an approach to unit testing Spring Batch Jobs. My editors tell me...
- The big three cloud providers (AWS, Azure, and Google Cloud, in that order) have their various strengths and areas of expertise. Most large organizations...
- AWS SQS (Simple Queue Service) can provide developers with flexibility and scalability when building microservice application(s). In this quick start tutorial, we will demonstrate...
- So you have mastered Spring Boot and started toying around with React. Now you want React to talk to your Boot app as your...
- While working on a recent project at a client, we had the opportunity to refactor some data extracts that were using a commercial Excel...
- Have you ever received endless notifications from the latest application you just downloaded? For example, a bank application that tells you your balance is...
- Over the last few years, I have worked on several .NET and JavaScript projects. My go-to IDE for Angular, Node, and (in starting to...
- In today’s development environment, there is an abundance of frameworks that we can choose from for front-end or user interface (UI) work.I was recently...
- ProblemI was pushing a new Docker image tag for each application code commit, and the admins of the private registry were getting annoyed at...
- Spring Boot is a framework designed to simplify the bootstrapping and development of a new Spring application. The framework takes an opinionated approach to...
- I am assisting a client that is migrating from a monolithic legacy application to a modern Microservice stack with Spring REST. We are helping...
- We are proud to announce the new release of a Hyperledger Fabric Blockchain Browser open source web application. This application utility allows developers and...
- Has your project gotten to the point when big data sets and/or time-consuming calculations have begun to affect performance? Or are you struggling to...
- From some of my previous posts, you can get the idea that I promote the idea of developing maintainable code rapidly. So I was...
- In general terms, a blockchain is an immutable transaction ledger in a distributed network of participating peers. Its data includes a string of transaction...
- JDK 10, an implementation of Java Standard Edition, was released in March 2018. It brought with it Local-Variable Type Inference to help simplify the...
- TL;DR: Add OWASP Dependency-Check to your build process to get insight into your dependency vulnerabilities.Recent major data losses and security vulnerabilities in open source frameworks...
- We have discussed many different ways to read and write data in Spring Batch. The framework comes with quite an assortment of Readers and...
- The JUnit team continues to make great progress in adding new features and enhancements to the JUnit 5 framework. We already have a second...
- The typical deployment scenario for a Spring Boot application in AWS involves running the Java application on an EC2 instance 24 hours a day....
- One issue that we face day to day as developers is speed of development. One of the coolest things to me in the ever-changing...
- Most applications use properties as variables or parameters that have been extracted from the main logic and injected into the application at runtime. Traditionally,...
- Bitcoin is hot -- and what an understatement that is. While the future of cryptocurrency is somewhat uncertain, blockchain, the technology used to drive...
- With the evolution of microservices and the scalable nature of modern distributed architectures, batch processing seems to be falling out of favor. In fact,...
- If you know Spring, chances are pretty good that you’ve also worked with RowMappers and everyone’s #1 favorite BeanPropertyRowMapper. Okay, maybe not EVERYONE. But...
- I recently gave a presentation to my Keyhole team members about JUnit 5. I started off the presentation by covering the importance of automated...
- The Keyhole team is proud to announce the publishing of a new white paper: Blockchain For The Enterprise. While Bitcoin is on the minds of...
- It is hard to believe that JUnit 5 has been out for five months! Already we have our first feature release. There are quite...
- I’m in the middle of several talks on JUnit 5, so it’s safe to say that JUnit has been on my mind lately. In...
- JUnit 5, released in September of 2017, is the first major release for the popular JUnit testing framework in a little over a decade....
- This article is part of my blog series on automated testing promoting my new Pluralsight course Effective Automated Testing with Spring.Automated testing is an...
- Apache JMeter is an open source application tool designed to load test functional behavior and measure performance on static pages, dynamic resources, and web...
- It seems that quite often we read stories in the news about computer systems being cracked and data being compromised. It’s a growing concern...
- When I heard that the Struts Open Source framework played a role in the recent Equifax hack, I wanted to do some research to...
- I recently worked to develop a software platform that relied on Spring Boot and Docker to prop up an API. Being the only developer...
- One of my most recent projects involved helping a client move many decades of code from a mainframe environment to a distributed Java web...
- Recently I was working on a development project for a client focused on Spring Batch. The program required a pull of the SFTP directory...
- Java 9, after many delays and failed votes, looks to be finally arriving this September.Java 9 will bring several new features: enhancements to Streams,...
- When developing web applications, we sometimes need to push server events down to connected clients. However, HTTP was not designed to allow this. To...
- While acknowledging that I still have much to learn about Spring Batch, I’d like to share my well-learned lessons in the world of restartability,...
- If you are heading down the path of a Microservices style of architecture, one tenant you will need to embrace is automation. Many moving...
- We have consultants who specialize in moving old to new, renovating dilapidated code bases, and designing brighter futures for enterprises who have been vendor-locked...
- Need a little spring in your step? Tired of all those heavy web servers and deploying WAR files? Well you’re in luck.Spring Boot...
- The Keyhole Labs team is excited to announce the release of a Spring Boot starter for auto-configuration of Trouble Maker.This new auto-configuration allows Spring...
- Welcome back to this JHipster tutorial series! In part one we covered creating a monolithic application. In part two, we walked through creating a...
- In part two of this series, we create a microservice architecture using JHipster’s available options for doing so. There is quite a bit more...
- I introduce the process I went through to diagnose the bug and determine the correct integration test solution to fix it the right way....
- So, you want to stay on the leading edge of technology, but feel overwhelmed by all the moving parts. You’re in luck! jHipster aims...
- Being a strong advocate of Spring Batch, I've always talked about the notion of Spring Batch providing developers with a framework that allows them...
- I recently wrapped up attending the SpringOne Platform conference in Las Vegas. If you didn't attend SpringOne, you'll definitely want to read this post....
- At Keyhole, we have published several blogs about Microservices. We've talked about architectural patterns used in a Microservices environment such as service discovery and...
- Introduction Update! Whirlpool now uses the "just released" Netty version 4.1.3. The great news about this is the upgrade required zero code changes, just update...
- In the much belated conclusion to my series on HATEOAS, we will be diving into how to implement HATEOAS using Spring-Data-REST and Spring-HATEOAS. It is...
- I am a huge Android fanboy, and have been one ever since the Nexus One came out. The Android OS has evolved so much...
- Delegate: a person who is chosen or elected to vote or act for others - Merriam-Webster. Delegate pattern: In software engineering, the delegation pattern is a...
- Or How I Learned to Stop Worrying and Love the HATEOASREST has become the defacto, or at least vogue, solution to implementing web services....
- Your application just launched into production after 6+ months of development and bug fixes. In true Agile fashion, you and the team released your...
- On a recent project, I was faced with an interesting problem: take a service method that was given a single object and reuse the...
- As software developers, we all have our favorite tools for making us successful. Many are perfect for the job when getting started but are...
- To say that n-grams are a massive topic would be an understatement. Do a quick search and you will find yourself staring down volumes...
- What is Spring Integration? The popular definition (via Google), JavaWorld.com says: “Spring Integration is an enterprise integration framework that provides out-of-the-box implementation of the patterns in the...
- Here at Keyhole, we are very fond of Spring Batch. In many Java Enterprise environments, there is still a big need for automating moving...
- I recently assisted a client in getting up and running with a Spring Batch implementation. The team had decided to move forward with a JavaConfig-based configuration...
- When I made the switch from .NET to Java, I naturally had to switch IDEs. With moving to Java, I chose Eclipse. I was...
- Netty is used today in all kinds of applications, all over the Internet, to handle thousands (if not millions) of chat conversations, multiplayer games including...
- I am currently working on an enterprise application using JSF as the view technology and JPA for the persistence layer. It may have been...
- My local development feedback loop between code change and runnable container was annoyingly long on a Maven-based project I was recently working on. I...
- When you have been developing in Java for 15 years and a co-worker asks you to help them debug a null pointer exception, you...
- The state of web application cryptography has changed, and each development language provides its own way of working with it. I will touch on...
- In my previous article covering Java Annotations, I outlined a recent use case and provided you with some examples of custom annotations and how they...
- In Part 1 of this series, I discussed the basics of loading data from an XML file into a database using JAXB and JPA....
- I know what a lot of you are already thinking, so let’s get this out of the way: “JAXB? As in XML? Come on,...
- If you've been programming in Java and using any one of the popular frameworks like Spring and Hibernate, you should be very familiar with using annotations....
- Although I studied and experimented with different development technologies and tools throughout my college and graduate careers, my full-time professional career began with development...
- While pulling down an existing Backbone.js project that I was helping with, I felt confident enough with JavaScript that I figured I could start...
- As I sat down to write this blog post, I thought through how many years I’ve been developing, and how many great people I...
- I wanted to take some time to put together a summary of some popular dependency injection (DI) frameworks for Java. This is a high-level...
- Single Page Applications are quickly gaining traction as a way to implement rich, robust, and mobile friendly web-based applications. Essentially, this requires a shift...
- In my time with Keyhole, I've been involved in a number of projects where the client was asking us to rewrite a legacy system...
- We have talked about how to get up and running with Spring Batch in a few of previous articles. Now, we’re going to start...
- The term Rapid Application Development, or RAD, has been around for a few years. From the way it's avoided in all sensible software development...
- In the early days of Java development, we either didn't see much of a need for build tools, or used what we had from...
- The de-facto “easy” primary key for ages has been the auto-incrementing integer. Upon insertion of a new record, the database simply increments a counter...
- We previously published a brief tutorial showing how to set up a Spring RabbitMQ Template. Now, let’s take a step back for a broader...
- In this quick tutorial, we will create a RabbitMQ Template to send messages to an exchange.The exchange we are working to send a message...
- As a part of the “lazy" programmer club, I try to find and use things that have solved problems similar to mine. In Java,...
- The Keyhole team has had recent engagements that involve applying HTML5 technology to create rich client web applications. In order to explore and validate...
- Most software development teams spend all of their time and efforts gathering requirements, planning, testing, implementing and supporting large systems to be able to...
- We often model interconnected data by cramming it in and out of table structures. Why don’t we simply model interconnected data as … interconnected...
- This is a continuation of my previous entry on component based java frameworks. In this post, I would like to give a couple of...
- Keyhole Software has opened access to the example application presented during the recent, successful Spring Batch Breakfast Boost educational seminar.The Spring Batch Breakfast Boost...
- Keyhole Software has scheduled its next educational event open to the public. Keyhole is hosting a free Spring Batch Breakfast Boost event to educate...
- While working for a client recently, I was given a small project to produce a report that would help reconcile differences in data that...
- PREFACE In January, I wrote a blog post about the need to partition HttpSession across multiple browser tabs or windows. In that blog, the client...
- jqGrid is an Ajax-enabled JavaScript control that provides solutions for representing and manipulating tabular data on the web. Since the grid is a client-side solution...
- Recently, I was working on a project in which the users needed to see a list of files available for download. While it wasn't a specific requirement,...
- I have recently had the opportunity to work on an application utilizing ICEFaces ICE components and have been learning more about the product. This...
- Now that we’ve had a high level overview of some of the simple and basic features of Spring Batch, let’s dive into what it...
- Have you ever heard someone say “Man I wish we had a toy like that when I was a kid! That would have been...
- During one of my engagements, a requirement arose for the production of numerous financial audit reports in PDF format. These reports currently existed and...
- I have a huge fascination with reality TV shows in which something is created. My favorite of this genre is the Chip Foose-led “Overhaulin”...
- Overview This is the second post in a series written on Dependency Injection for Android Development. In this blog, I will discuss how to take advantage...
- Overview For many years now, Object Oriented developers have relied on various Dependency Injection frameworks while developing anything form desktop to web applications. For both...
- As a software consultant, I very rarely end up in a situation where I am asked to implement something new from scratch, and even...
- Scenario You are working on a project and you have two objects. You want to know if, according to the business, they are the same...
- At Keyhole Software, we are huge proponents of the benefits of open source software. Our team members enjoy contributing their creations to the development...
- My last article was entitled Joda-Time: The Future of Java Date/Time and I was pleased to see a lot of discussion on the topic....
- A wide variety of parsers exist for use with JSON and can be viewed on the JSON website. One great option for use with Java...
- Most Java applications interact with a relational data source through a POJO object model that is mapped with an object relational (OR) mapping framework. ...
- So how often have you had to work with date/time functions in Java? I mean really WORK with them? I'm not talking about simply...
- If you want to go surfing but you live smack dab in Kansas, it could be a challenge. (Unless you want to go paddle...
- Recently I've been working on a project that is centered around batch processes that leverage the Spring Batch project and also uses hibernate's JPA...
As the industry gradually shifts from JDK 8 to the latest LTS release and becomes more accustomed to the new, 6-month release cadence, we should start seeing faster adoption rates of new releases.
As a result, the need to continually sharpen your sword and stay up to date will increase.
This tutorial takes a look at three of the more significant enhancements that come with JDK 14: Records, NullPointExceptions, and instanceof. We’ll also briefly discuss JDK 15 and its promised JEPs.
Get more info: What’s New in JDK 14 and Beyond.
We walk you through a few tried and true methods to transferring your Spring Batch applications up to the cloud.
Get More Info: Transferring Spring Batch Apps to AWS Cloud
Advice learned from experience and external resources to help your team use Java with Visual Studio Code.
Get More Info: Java Development Using Visual Studio Code
Coding your UI in Java can save you valuable time. In this post, we introduce two of the latest tools that allow you to do this: GWT and Vaadin.
Get More Info: Java-Based UI Frameworks
We are passionate about knowledge transfer and expansion. Our team shares its consulting expertise via blogs, learning resources, and open-source utilities that benefit the larger software development community.
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Java Consulting Services
Keyhole Software consists of proven practitioners of Java application development. Our expert staff helps clients to design and build custom, enterprise-grade Java software applications and solutions.
Advisory & Consulting
Strategic analysis and tailored advice to most efficiently develop with and utilize Java technologies.
Java Development
Using Java technologies to build server-side or serverless enterprise applications to specification.
Education & Training
Technical education through hands on learning to equip your team for effective Java development.
Proof-of-Concepts
Ensure that your solution will be viable for the needs and requirements of your industry.
Development Project Augmentation
Proven Java practitioners from our team join your project to bring specific initiative, skill, and leadership.
Java Application Enhancement
Building onto your existing Java application to add new features, enhancements, and optimization.
Java Competencies
Keyhole consultants are tool agnostic— we use the right tool or technology for the unique project requirements. We have expertise with a wide variety of Java frameworks and tools.
Significant Java development experience surrounds all aspects of the Spring framework (including Spring Boot, Spring Batch, Spring MVC, Spring Data, Spring Configuration, Spring Cloud), Hibernate, Java Server Faces (JSF), JPA, Struts, GWT, Vaadin, and many more.
Recent Java Applications
Keyhole’s consulting experience with clients allows us to boast a wide range of competencies and proven success with Java technologies in a variety of industries, configurations, and environments.
- A team of Keyhole Software consultants helped a multi-national company to develop an application focused on full automation of the insurance claims workflow process...
- A team of Keyhole Software Consultants built a customer-facing analytics dashboard for an international leader in automotive data and software services. This project was...
- Keyhole consultant was engaged in an effort to implement a push notification solution for an existing mobile banking application.To begin, Keyhole reviewed the application...
- Under an aggressive 6-week deadline, a four-person Keyhole Software Consulting team was charged with delivering functionality to the first phase of a capital asset...
- Keyhole Consultants are currently leading an initiative at a large financial services firm to move a large, monolithic, legacy application running in the organization's...
- Keyhole consultants engaged with a local small business to create a web application for its monthly subscription service.The business domain was custom embroidery designs...
- This project initiative was staffed by 15 Keyhole consultants including a project lead. The Keyhole consulting team converted and migrated a jQuery-based financial web...
- Keyhole Enterprise Architects assisted two main change initiatives which included the Architectural Analysis of a large application domain in addition to an Analysis of...
- The ultimate goal of this project was to improve the stability of the application suite as the organization made the transition to a Microservices-style...
- In this project, almost 1,000 existing Model 204 batch applications were converted to Java Spring and Spring Batch-based applications.The goal of this engagement was...
- The Keyhole team worked to modernize the organization’s enterprise batch processing applications. This project included converting a long list of COBOL batch processing applications...
- Sr. Keyhole Software Consultants engaged with a national provider of vision insurance to strategically improve the company's Payment Claim batch processes. The client's existing batch...
- Different Keyhole Software teams have been involved in the creation, enhancement, and maintenance of a complete insurance management system for one of the principal companies...
- A Keyhole team developed a green-field point-of-sale system with inventory management.The project involved extensive work in portals, portlets, and mobile technologies on both the...
- A Keyhole team focused on developing home automation (Internet of Things - IoT) application. The application would allow users to control different actions in their home...
- This custom solution handles the management of information pertaining, but not limited to: accounts, broker relationships, policies, claims, and documents. The origins of this...
- The Keyhole Software Feature Team utilized a JSF scope (new in 2.0) called Custom Scope. As the name implies, this scope had the ability...
- A team of Keyhole Software consultants achieved the client's goal in building this application, which was to validate that robust enterprise applications can be...
About Keyhole Software
Company
Established in 2008, Keyhole is a software consulting firm based in Kansas City and St. Louis. Our consultants are expert software architects & developers that assist nationwide clients in JavaScript, .NET, and Java solutions. Gold Microsoft Partner, AWS Partner.
Employee Consultants
Our team is singularly comprised of elite, vetted Keyhole employees with strong histories of client acclaim— hired for development skill, personality, and communication ability, they are with us long term.
Engagement Model
Free initial consultation. We work with clients on Statement of Work basis as individual consultants or entire project teams. We agree on project scope, hourly rate, and estimated timeline. No contract-to-hire or 10-99 outsourcing.
Our team of consultants has extensive experience developing with and utilizing Java technologies. Throughout the process from technology selection, to adopting and adapting your current data to the new approach, to educating and mentoring your team—Keyhole Software has your organization covered.
