using final with inheritance in java

When it comes to the final keyword, it's probably a lot of people who are not unfamiliar with the final keyword when using anonymous internal classes. In addition, the string class in Java is a final class, so today we'll look at the use of the

  Given a hierarchy (inheritance system), one class student is inherited from a class person public. When it is necessary to call a function successfully, students needs to be implicitly transformed to persons, it demonstrates this to the compiler.

1. Selection between combinations and inheritanceBoth combination and inheritance allow child objects to be placed in a new class, and the combination is explicitly done, whereas inheritance is implicitly done.Combinatorial techniques are typically

First speaking inheritance1. The role of inheritance1) Improve code reusability;2) make a relationship between classes and classes;2. Java Inheritance Features1) Java only supports single inheritance and does not support multiple inheritanceBecause

Summary:Based on the reuse of Java classes, this paper presents a comprehensive description of the inheritance and polymorphism of object-oriented two major features.First of all, we introduce the essence and significance of inheritance, and discuss

This example describes the final keyword usage in java. Share to everyone for your reference, specific as follows: Depending on the context, the Java keyword Final also has a subtle distinction, but it usually means "this is immutable." "There are

Final classwhen a class is defined as final class, it means that the class cannot be inherited by other classes, that is, it cannot be used after extends. Otherwise, errors are obtained during compilation. Package Com.iderzheng.finalkeyword;

Reading Notes Objective c ++ Item 39 use private inheritance wisely and cautiously, using tiveprivate1. Introduction to private inheritance Item 32 indicates that C ++ treats public inheritance as a "is-a" relationship. Consider an inheritance

Java static, this, super, final usage I. Static Take a look at the following program: Public class Hello {Public static void main (string [] ARGs) {// (1)System. Out. println ("Hello, world! "); // (2)}} I have read this program,

2.6.3 static keywordGenerally, when creating a class, we will point out the appearance and behavior of the Class Object. Unless you use new to create an object for that class,Otherwise, you will not actually get anything. The data storage space will