Advanced techniques: Fields and methods in Java Learn seven advanced techniques ... declares four methods in the Book class: class Book { // ... String getTitle() { return title; ...

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...

As noted, Java strings are immutable. Once created, a string using string class cannot be changed. Any attempted changes will create another string instance. Users can perform basic operations, such ...

Instance main methods and unnamed classes, coming in Java 21, will forever change how developers learn Java and bootstrap applications. Why? They provide a simple, clean and concise syntax to launch ...