This example will show you four different ways to implement this functional interface in your code — starting with how to use an actual class, and how to create very concise code with a lambda ...

If you’ve read my Java 101 tutorial introducing static classes and inner classes, you should be familiar with the basics of working with nested classes in Java code. In this associated tip, I ...

Fortunately, Java provides a simple mechanism to help developers avoid this exception ... you should not use fail-safe iterators. The ArrayList and HashMap classes, have fail-fast iterators. The ...