Secrets of JAVA Training Chapter 7: Object-Oriented Programming

Expiration: Secrets of JAVA Training Chapter 1: Pain Secrets of JAVA Training Chapter II: Gradually Magic Secrets of JAVA Training Chapter III: Jedi Strike Back Secrets of JAVA Training Chapter IV: Closed-door Training Secrets of JAVA Training Chapter V: "Wage and Gallbladder" Secrets of JAVA Training Chapter VI: Battle JAVA Refinemen ...

Posted by stewart on Mon, 13 Sep 2021 09:48:06 -0700

Use of Java object-oriented abstract methods, abstract classes and interfaces

1, Abstract 1. Brief description It's just a statement, not a realizationAbstract method: public abstract void act();, There is no method body and it ends directly. Abstract methods can only exist in abstract classes.Abstract class: public abstract class Test {}. The subclass inheriting the abstract class must override the methods (including ...

Posted by kylebragger on Fri, 10 Sep 2021 21:04:01 -0700

Practical experience 79 beware of object cutting

The book Thinking in C + + discusses object slicing as follows: if a derived class object is forcibly transformed upward into a base class by passing values instead of pointers and references, the derived class object will be cut into a base class object after upward transformation, that is, the unique member variables and methods in the derive ...

Posted by gamesmstr on Wed, 01 Sep 2021 19:46:11 -0700