This effectively turns the method into one that matches Function<String, String>, where the input String is the instance itself, and the output is the result of the toUpperCase() method.

Java’s Scanner String input method. To take String input from the user with Java’s Scanner class, just follow these steps. Import java.util.*; to make Java’s Scanner class available; Use the new ...

Introduced in Java 6, Java’s System Console class provides two simple methods to obtain user input: readLine() readPassword() Java user input with readLine. The readLine() method takes user input ...

Classes, fields, methods, constructors, and objects are the building blocks of object-based Java applications. This Java tutorial teaches you how to declare classes, describe attributes via fields ...

The Java input/output (I/O) facilities provide a simple, standardized API for reading and writing character and byte data from various data sources. This article explores the I/O classes ...