Core Java
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Mutual Problems
The HTTPS protocol is the well-established standard for securing our connections. Understanding how this protocol works is not a problem…
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Java 8: A Type Safe Map Builder Using Alternating Interface Exposure
Expose Your Classes Dynamically When I was a Java newbie, I remember thinking that there should be a way of…
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Java: Immortal Objects and Object Resurrection
What is Object Resurrection? A Java object is eligible for Garbage Collection when no other object references the object. When…
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Watch Out For Recursion in Java 8’s [Primitive]Stream.iterate()
An interesting question by Tagir Valeev on Stack Overflow has recently caught my attention. To keep things short (read the…
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Java 8: Declare Private and Protected Methods in Interfaces
When Java 8 was introduced, we could use default methods in interfaces. The main driver for this feature was to…
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Put Your Java 8 Method References to Work
Method References As we all know by now, we can use Method References, like String::isEmpty, in Java 8 to reference…
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Verifying DateTime and Date with Hamcrest
Since I started diving into automated testing and practicing TDD, verification of date values was pain. Luckily there is nice…
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Improve Your JUnit Experience with this Annotation
JUnit is probably part of 90% of all Java projects. And the exciting thing is, we’ll soon have JUnit 5…
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Looking at DiagnosticCommandMBean in JConsole and VisualVM
I’ve used JConsole for many years as a suitable generic JMX client. This tool is generally available with the Oracle…
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