The first half of this introduction to Java inheritance teaches you how to use the extends keyword to derive a child class from a parent class, invoke parent class constructors and methods ...

When two classes are related through inheritance, the child class must be able to access every accessible field, method, or constructor of its parent class. In Java, we use the reserved word super ...

Constructors play a key role in all object-oriented programming languages, and Java is no exception. Every class a Java developer creates needs a constructor. Constructors perform numerous important ...

That's a good start to help developers understand LSP, but Martin's quick description initially reads like a summary of Java's out-of-the-box inheritance and polymorphism mechanisms. We need to dig ...