Karl Penzhorn
All Posts by Karl Penzhorn
Deploy a Spring Boot Application into Tomcat
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Deploying applications is hard. Often you need console access to the server from which you pull the latest code and then manually instantiate into...
Build an iOS App with React Native and Publish it to the App Store
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Apple’s App Store is the holy grail for mobile developers. With React Native you can develop native apps for Android and iOS using a...
Design and Develop an Android App with React Native and Publish to Google Play Store
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. As mobile app usage is expected to continue to grow, now is as good a time as any to get into the market. Android...
Build and Test a React Native App with TypeScript and OAuth 2.0
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. React Native is one of the most popular ways of creating mobile apps. Building on the success of React, it ties together native components...
Build a Basic CRUD App in Android with Kotlin
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Kotlin was recently given official Android support status by Google, but it remains difficult to understand for many developers. The best way to start...
Create a Basic Android App without an IDE
Note: In May 2025, the Okta Integrator Free Plan replaced Okta Developer Edition Accounts, and the Okta CLI was deprecated. We preserved this post for reference, but the instructions no longer work exactly as written. Replace the Okta CLI commands by manually configuring Okta following the instructions in our Developer Documentation. Virtually every Android tutorial uses Android Studio to create and develop an app. This isn’t great for learning since you don’t see how things...