Design Patterns · Junior · Question 64 of 75

What is polymorphism?

✓Correct answer: Working with different types through a common interface, each providing its own behavior
2A function with many parameters
3Changing a variable's type at runtime

Explanation

Calling shape.area() works for circles and squares without checking which one it is.

Further reading

Wikipedia: Polymorphism (computer science) ↗

Test yourself

Take the Design Patterns · Junior quiz: questions and options are shuffled, and you get a review of your mistakes at the end.