Home » Author Archives: Ronald Djunaedi

Author Archives: Ronald Djunaedi

Ronald Djunaedi
Ronald is a senior Java Developer, specialization in J2EE Programming and its technologies and frameworks. Been a trainer for a while, specialization in training subjects: Java Fundamentals, OOP and J2EE. Has been involved actively in numerous IT Software Development Projects with multiple companies and clients.

Factory Design Pattern Case Study

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I had a job to check our project code quality. And have to report it back to my team leader for any obstacle that i found in the project. I found a lot of leaks and i think would be good to be discussed on the blog. Not to mock the author, but to learn and improve ourselves together. Like ...

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Calling private Java methods publicly?

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We Java developers, known 4 access modifiers in Java: private, protected, public, and package. Well, except for the private, the last three, can be called from outside of the class by inheritance, same package or from the instance. Now, the common question, can private be called publicly (from outside class)? well the answer is NO and YES. No when you ...

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Java Twitter client with Twitter4j

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Got inspired by my friend, who built his own Twitter client for his company’s client. So, I tried to build one using Java. And I’m surprised at how easy is to make a Twitter client, of course I still use a third-party API to make my job easier. This simple client will only have 2 purposes: reading timeline and post ...

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