#java interface

Back2Basics: The Story of Trait – Part 2

In our previous blog The Story of Trait – Part 1, we have discussed how traits are the just regular interfaces at the very basic form. In this blog, we will explore about traits can have method implementation too.

We will continue with our previous example and modify it and see how trait behaves in different scenarios.

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Back2Basics: The Story of Trait – Part 1

In this blog, we will have a look at traits in Scala.

We have classes in Scala. Suppose we have a class Dog which has a method speak.

class Dog(val name: String){ def speak() = println(s"$name is barking") }

Now if we want another class Cat which has the same method speak. What we will do? In Java, generally, we create an interface Animal and classes Dog and Cat will implement the interface.…

Java programming language is becoming used globally by software program builders and end-users. Java programming forum, Java tutorials, Java coaching websites have come up in hundreds because the number of keen minds is increasing who're fascinated by the intricacy and efficacy of the Java programming language.

Java course, object and interface are a few of the extremely basic terms which you can discover in almost any Java tutorial. In this article we'll discuss concerning the several kinds of an interface. Just like a course, an interface also consists of several various methods like:

Abstract techniques

Constant methods

Nested methods

Default techniques

Static methods

There are numerous kinds of interfaces in this programming language like:

Declaring interface: In this kind, the phrase interface must be used to declare an interface. Within this type an interface implies summary techniques. The abstract keyword is redundant within this situation because all methods used in a Declaring interface are summary. Also, the abstract methods used are implicitly public.

Extending interface: An interface can be prolonged into an additional interface. Within this regard an interface is extremely similar to a class. A category may also be extended into one class. The key phrase utilized in this situation is called extends. The new interface has similar techniques as that of the original interface.

Extending numerous interfaces: A Java interface may be extended into more than one interface unlike a category exactly where only extension is permitted to 1 solitary course. The key phrase extends is used only once and all of the mothers and fathers are referred or declared with a comma in between two names.

Tagging interfaces: This type of interface does not include any technique. It's developed with the purpose of adding a data kind to a course mainly. Also an additional purpose is to create a typical authentic interface frequently referred to as a mother or father.

Implementing interface: This occurs when a course implements an interface. The keyword used in this situation is known as implements. There is a established of rule attached with this particular kind of interface. They're:

A class can extend just one class in a time but numerous interfaces.

An interface can extend into more than one interface as mentioned within the Extending interface section.