Method references are a shorthand way to write lambda expressions that call a single method. Rather than implementing a method in a functional interface, a method reference simply points to an ...

Have you ever wondered how Java seamlessly combines its primitive data types with object-oriented programming? Enter wrapper classes, an important but often overlooked Java feature. These special ...

You want Bar to be passed a function to call, but not use it on construction, only on the callbacks from the GUI widget. That function must end up being an actual method somewhere (it's Java, ...