What is the difference between C# and Java?

Are you confused between C# and Java? Want to know what you want to learn for your future, then check out what are their similarities and dissimilarities?
Written by Paayi Tech |06-Aug-2019 | 0 Comments | 493 Views

The basic building block of any language is C++ including Java and C#. Both of these languages are driven from C++. That means if you want to excel in any of these languages, you must first get command in C++.

Although the roots of both of these languages the same, they are still different from each other. The syntax of both of these languages is also far different from each other. C# is considered as the modern form of programming language which is used extensively in many platforms worldwide for the development of web apps. On the other hand, you won't see Java everywhere. It is mostly used for developing applications along with other programming languages.

Moreover, the developers of both of these languages are also different. Microsoft is the developer of C# while Sun microsystem is the developer of Java Programming language. 

Let's deep dive into the difference between these two programming languages from the perspective of a coder.


The Syntax Difference

There are hardly any two programming languages which come with the same syntax. C# and Java are no exception. Although their origin is the same, yet their syntax is different. Let's take a simple example of code as shown below:


For Java the syntax goes as follows:

Public static void main (String [ ] args)

For C# the syntax goes as follows:

Static void Main (string [ ] args) 

Static void Main ( ) 

Similarly, if you want to output a result in Java, the syntax is different for both of them.


For instance, in Java the syntax for print statement is:

System.out.println ("Hello world!")

And for C#, it is:

Console.WriteLine ("Hello world!")

These are only some examples. Syntax

Virtual Methods, Polymorphism and Overriding

You must be familiar with the concept of overriding and polymorphism. Well, the concept is the same in both but the method of declaring them is different. C# requires you to use the keyword virtual to declare a virtual method. 

That means you need to declare it explicitly in C#. However, that is not the case in Java as in Java, you don't need to explicitly mark a method as virtual. Why? Because the methods are already virtual in Java.


Public Classes

Many programming languages allow the use of more than one classes in a single file. However, there is the main difference between Java and C# when it comes to multiple classes.

In C#, you can declare as many classes in a single file as you want. The file name is also according to your choice and it is not required that it should match with the source file.

On the other hand, Java restricts you regarding the number of multiple classes. You can use only a single class in a source file. Moreover, the names of both the source file and the class MUST be the same to get public access.



Every coder is familiar with the concept of pointers. It is used as a reference to a particular location in memory. In C#, you can use pointers only in the methods which are marked as unsafe.

However, in Java is a pointer-less programming language, it doesn't know about the concept of pointers and you cannot use it there. It's good news for those who find the concept and use of pointers difficult.


Difference between the uses of Java and C#

Java and C# both are used for different purposes. When we talk about the uses, then Java is generally used for developing mobile apps especially android app development. On the other hand, C# has dedicated game development as well as web apps. It is not that Java cannot be used for the development of web applications, but it is more practical for mobile apps.

Moreover, in terms of usage, Java is more flexible and you can learn and use it easily. That is why it is also known as the favorite programming language of all the coders out there.


Ease of use and learning

If you are an expert in C++ then you must be aware that it the simplest and easy to learn programming language. As C++ is the base of any programming language including Java and C#, that is why both of these languages are easy to learn as well.

However, if we compare both, then Java is much easier to learn and use than C#. You will find Java everywhere. There are online courses and tutorials which are everywhere on the internet and in the form of books. However, things are a bit different in C# and you won't find much support and learning of this language online.


The KEY difference between Java and C#

There is one major key difference between C# and Java and that is the environment in which these languages run. Java works with Java Virtual Machine (JVM). On the other hand, C# goes with Common Language Runtime (CLR).

However, no matter what environment they need, both of these programming languages are object-oriented.


Some other differences

  • Familiar with the concept of operator overloading? Well, C# support it while Java doesn't.
  • Java doesn't have any class properties while C# has it.
  • The IDEs of both of these programming languages are also different. Java runs of Eclipse or NetBeans while C# requires Visual Studio.
  • There is one major difference in "Properties' between these programming languages. You can use properties in C# and it supports it. However, there is no concept of properties in Java.
  • C# supports goto statements while Java doesn't.
  • The concept of arrays is different in Java and C#. In Java, you use jagged arrays. Jagged arrays are similar to the arrays you use in Data Structures but the difference is that they are single-dimensional. On the other hand, C# works with rectangular arrays.
  • You can only use unchecked exception in C# while Java allows the usage of checked an unchecked exception both.

So, these are the basic differences between the two programming languages. Both are unique in their way and is used widely all over the world for the development of amazing platforms and web apps.


Login/Sign Up


Related Posts

© Copyright 2020, All Rights Reserved. paayi.com

This site uses cookies. By continuing to use this site or clicking "I Agree", you agree to the use of cookies. Read our cookies policy and privacy statement for more information.