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 ...

At this point, the Scanner still returns a String, although the String contains only one character. To complete the use case, you must convert this one-character String into a single Java char with ...

Behind the scenes, 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 ...