When you write String::toUpperCase, Java binds each element of the stream (String object) to the toUpperCase() method. This means String::toUpperCase is interpreted as s -> s.toUpperCase(), where ...

In this post, we will learn how to call a method in Java. This is a useful “chunk” of code that you can call from anywhere else in your program, thus preventing you from needing to write out ...

8 guidelines for writing reusable Java code Define the rules for your code Document your APIs Follow standard code naming conventions Write cohesive classes and methods Decouple your classes Keep ...