The Java Predicate class provides default methods for combining predicates with logical and and logical or, but they don’t always work as expected.

Wrapping a collection without exporting any modifying methods should make an immutable object. Or not?

I create bugs all the time, but usually they are plain stupid. But sometimes I can become quite creative…

As already mentioned elsewhere, I like Java enums a lot, because you can enhance them easily to make them more useful. But the examples I gave until now are quite complex. So here are some easier ones.

Here you’ll find a neat trick how to allow your Java applications to use more memory without any user interaction.

Java enums are nice, but how can you use them as them as bit flags? In many other programming languages this is perfectly simple.