If you’ve read my Java 101 ... an inner class must at all times be able to access its outer class–which doesn’t always work with the JVM’s plans. Getting from a simple nesting prodedure ...

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 ...

Instance main methods and unnamed classes, coming in Java 21, will forever change how developers learn Java and bootstrap applications. Why? They provide a simple, clean and concise syntax to launch ...