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

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

In some cases you want to define a method parameter which is of a certain type (i.e a class or an interface), but also implements another interface.

The Java Package Bridge allows access between your packages without giving access to the outside world. This makes it similar to the internal keyword in the .NET framework, and slightly related with C++’s friend.