Java vs OOP
- 1. /27@yegor256 1 Java vs OOP Yegor Bugayenko
- 2. /27@yegor256 2 long video showing Clojure 8000+ lines Java class
- 4. /27@yegor256 4 if it works, it’s good if it’s good, it works
- 5. /27@yegor256 5 “Just make $1B with something instead of ORM and you will be right” — Victor
- 7. /27@yegor256 7 “Objects may contain data, in the form of fields, often known as attributes; and code, in the form of procedures, often known as methods”
- 8. /27@yegor256 8 “Each object looks quite a bit like a little computer — it has a state, and it has operations that you can ask it to perform” - page 16
- 9. /27@yegor256 9 “A class is a collection of data fields that hold values and methods that operate on those values” - page 98
- 10. /27@yegor256 10 “An object is some memory that holds a value of some type” - page 40
- 11. /27@yegor256 11 “An object consists of some private memory and a set of operations.” - page 6
- 12. /27@yegor256 12 “An object is the equivalent of the quanta from which the universe is constructed” - page 66
- 15. /27@yegor256 15 final - immutability - setters - anemic model - data structures - procedural thinking
- 16. /27@yegor256 16 static - utility classes - singletons - procedural thinking
- 17. /27@yegor256 17 instanceof - reflection API - no polymorphism - no encapsulation - procedural thinking .class
- 18. /27@yegor256 18 @ - split objects apart - anemic model - procedural thinking
- 21. /27@yegor256 21 JAX-RS @Path(“/”) public class Index { @GET @Produces(“text/plain”) public String get() { return “hello, world!”; } }
- 22. /27@yegor256 22 Apache Commons text = FileUtils.readFileToSTring(f); StringUtils.abbreviate(“hello, world!”); DigestUtils.md5(“some text”);
- 23. /27@yegor256 23 JPA @Entity(table = “book”) public class Book { @Id public int id; @Column public String title; }
- 25. /27@yegor256 25 Android SDK android.app.Activity 200+ methods it’s a shame
- 26. /27@yegor256 26 time to change sides!