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 ...

We’ll look at each of these methods and how you can use them to perform special tasks in the context of your Java classes. First, let’s consider the basic rules and mechanisms for Object ...

Types of strings in Java. Java distinguishes between primitive strings and object strings:. Primitive strings. These are string literals or string calls from a nonconstructor context. A constructor is ...

Using Java’s String length method. To get the number of characters in a given piece of text, the Java String length() method is all you need. Just make sure the String is not null, and avoid any ...