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 ...

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 ...

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 ...