In this article I will use a common example to help describe the problem, then provide solutions written in C++, Java before lambda expressions, and Java with lambda expressions. Note that a ...

Before Java SE 8, anonymous classes were typically ... parentheses required because of multiple formal parameters The first example’s expression-based lambda body doesn’t have to be placed ...

And since Java is a strongly typed language, the object types must be a polymorphic match as well. Take the following functional interface as an example: As you can see, this lambda expression ...

The goal of a lambda expression is to reduce the verbosity of Java code, especially for those situations where you need to override an interface with only one functional method. Here is how the code ...