You don’t have to create any Book objects to call class ... An access level is an indicator of who can access a field, method, or constructor. Java supports four access levels: private, public ...

Java is an object-oriented programming language. To create objects and meaningfully initialize them, a developer must use a Java constructor. Constructors are a critical part of software development ...

As you can see, it can make sense to perform constructor overloading even in a simple Java class that that has only two properties. For more complex classes, it's not uncommon to have five or more ...

It can make your constructors too long and complex ... Setter injection is another common type of DI in Java. It involves providing setter methods for the dependencies of a class, and calling ...