What is a class in java?

Class in Java refers to a specialized programming template, which is used to make new objects and define their data types and methods. You can also call it a blueprint, which facilitates the creation of other individual objects.  

A class in Java can be attributed to a logical template, which helps to create objects with similar methods. All objects within the class also carry the same characteristics.  

Rules You Must Follow While Creating Class in Java:

• A class may be final or abstract. 
• The components of a class are: class keyword and an identifier
• You can indicate variables and methods within a Java class using curly braces. 

Example of a class in Java

Take for instance; Dogs. 

A specific dog, like a Pomeranian, comes under the ‘object’ of the dogs. All dogs will share some similar features such as having a tail, white in colour, and many more.   

Now once you create a class — “Dog.” You can’t go on to create a cricket match from it. Because when it comes to cricket matches, you need many more elements, including players, team name, venue name etc.  

You can use Java constructors to initialize a new object in your Java class. You need to have at least a constructor—a default one by Java compiler or the one that you create. 

Now that you have understood what is a class in java, let’s take a look at the types of classes in Java.

What are the types of classes in Java?

Local Variables:

It often refers to temporary variables. They are often initialized and are available for garbage collection after the completion of the process.  

Instance Variables:

These are variables that are intrinsic to the object and can be easily entered into using any Java constructor, block or Java method.  

Class Variables:

Class variables are also called static variables in computer programming parlance. They also work like instance variables but they get created when the program starts and ends when it ends. 

How to create a class in java?

Now, we will look into the process of how to create a class in Java. 

Here you have to use two keywords: class and the type that you want to define: 

Main.java

Create a class named “Main” with a variable x:

public class Main {

  int x = 5;

}

Bonus Read: Class in Java 

Every time you declare a class, use the class keyword. A class must contain data and a method to execute the command. The data within a class are called instance variables while the code that is executed is called methods.  

In Conclusion: 

Creating a class in Java is easy. You just have to make sure that you use “Class” for every class that you wish to create on Java. You can use this article for help.

We hope you have now clearly understood the meaning of class in Java. For any additional queries or information on Java, please send in your comments. We will try to help you as much as possible.