Core Java
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Pass Streams Instead of Lists
Opening disclaimer: this isn’t always a good idea. I’ll present the idea, along with some of the reasons why it’s…
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Starting out with jHiccup
After writing my post on ‘How to detect and diagnose slow code in production’ I was encouraged by a reader…
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Thou Shalt Not Name Thy Method “Equals”
(unless you really override Object.equals(), of course). I’ve stumbled upon a rather curious Stack Overflow question by user Frank: Why…
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Using junit for something else
junit != unit test Junit is the Java unit testing framework. We use it for unit testing usually, but many…
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Java 8 pitfall – Beware of Files.lines()
There’s a really nice new feature in Java8 which allows you to get a stream of Strings from a file…
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Determining File Types in Java
Programmatically determining the type of a file can be surprisingly tricky and there have been many content-based file identification approaches…
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Using JDK 8 Streams to Convert Between Collections of Wrapped Objects and Collections of Wrapper Objects
I have found Decorators and Adapters to be useful from time to time as I have worked with Java-based applications.…
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The Optimum Method to Concatenate Strings in Java
Recently I was asked this question – Is it bad for performance to use the + operator to concatenate Strings in…
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Why is my JVM having access to less memory than specified via -Xmx?
“Hey, can you drop by and take a look at something weird”. This is how I started to look into…
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