why interface required in java

Before learning the object-oriented design patterns, Java interfaces and abstract classes are vague and hard to understand. When I first learned the Java language, it was hard to understand why the concept of interfaces was required. Although

AheadAs a Java programmer, why don't I turn to go in a production project?Since Google released the first official version of the Go language in 2009, the language has been popular with excellent language features, especially in situations where

Ahead As a Java programmer, why don't I turn to go in a production project?Since Google released the first official version of the Go language in 2009, the language has been popular with excellent language features, especially in situations where

Object-oriented design has a point that everyone has basically formed a consensus, that is, interface programming, I think most people on this is nothing to suspect. The question is how we embody it in the actual project development. Does it mean

Why internal classes are requiredIn general, an inner class inherits from a class or implements an interface, and the inner class's code action creates an object of its outer class. So it can be thought that the inner class provides some kind of

PHP already has the Object-Oriented function, but why is it so important that the interface function similar to Java is gone? PHP already has the Object-Oriented function, but why is it so important that the interface function similar to Java is

Why Internal classes are required for java-8.11 from the beginning? In this chapter, we will discuss why Internal classes are needed? Answer: It facilitates multi-inheritance. There are two methods to implement multi-inheritance: Internal classes

What's Inner Interface in Java?Inner interface is also called nested interface, which means declare an interface inside of another interface. For example, the Entry interface are declared in the Map interface. Public Interface Map { interface

Before studying the design patterns of object-oriented design, I had a vague understanding of Java interfaces and Java Abstract classes. When I first learned the Java language, it was hard to understand why the concept of interfaces was required.

Since Google released the first official version of the Go language in 2009, the language has been popular with excellent language features, especially in situations where high concurrency is required, and everyone will think about whether to use go.