We will focus on the relationship between polymorphism and Java inheritance ... To start, analyze the following code carefully: public class PolymorphismChallenge { static abstract class Simpson ...

Twenty-three years ago, in his Design Principles and Design Patterns article, Robert "Uncle Bob" Martin boiled down the Liskov substitution principle to the idea that "derived classes should be ...

import static java.lang.Math.cos; import static physics.Math.cos; double angle = PI; System.out.println(cos(angle)); Second, overusing static imports pollutes the code’s namespace with all of ...