The Difference Between Python vs Java

The Difference Between Python vs Java
Written by Sagar RabidasNovember 13, 2021
7 min read
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Sagar Rabidas

Software Developer

In this blog, we will discuss the difference between Python and Java.

Python overview:-

Python was first released in 1991. It is an interpreted, high-level, general-purpose programming language. It is Object-Oriented.

Designed by Guido van Rossum, Python has a design philosophy centered around code readability. The Python community will grade each other’s code based on how Pythonic the code is.

It has built-in data structures, combined with dynamic typing and dynamic binding, making it very attractive for rapid application development, scripting, or as a glue language to connect existing components.

When we use Python?

Python’s libraries allow a programmer to get started quickly. Rarely will they need to start from scratch? If a programmer wishes to jump into machine learning, there’s a library for that. If they want to create a pretty chart, there’s a library for that. If they wish to have a progress bar shown in their CLI, there’s a library for that.

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Java overview:-

Java is old. Java is a general-purpose programming language that utilizes classes and, like Python, is object-oriented.

Java was developed by James Gosling at Sun Microsystems, released in 1995 as a part of Sun Microsystem’s Java Platform. Java transformed the web experience from simple text pages to pages with video and animation.

One major advantage of developing software with Java is its portability. Once you have written code for a Java program on a notebook computer, it is very easy to move the code to a mobile device. When the language was invented in 1991 by James Gosling of Sun Microsystems (later acquired by Oracle), the primary goal was to be able to "write once, run anywhere."

When do we use java?

Java is designed to run anywhere. It uses its Java Virtual Machine (JVM) to interpret compiled code. The JVM acts as its interpreter and error detector.

With its ties to Sun Microsystems, Java was the most widely used server-side language. Though no longer the case, Java reigned for a long while and garnered a large community, so it continues to have a lot of support.

Programming in Java can be easy because Java has many libraries built on top of it, making it easy to find code already written for a specific purpose.

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Who uses Python & Java?

Python is often used with new programmers or junior developers entering a data science role. The big machine learning libraries, TensorFlow and PyTorch, are both written in Python.

Python has excellent data processing libraries with Pandas and Dask, and good data visualization capabilities with packages such as Matplotlib and Seaborn.

Java is used a lot for web development. It is more common among senior-level programmers. It allows for asynchronous programming and has a decent Natural Language Processing community.

Both languages can be used in API interactions and for machine learning. Java is better developed for building web applications. Python’s Flask library is still only able to build the basics to a Python-based UI but is great for creating a Python back-end with an API endpoint.

Python vs Java in code

Let’s see how Java and Python work differently.

Syntax

Because Python is an interpreted language, its syntax is more concise than Java, making getting started easier and testing programs on the fly quick and easy. You can enter lines right in the terminal, where Java needs to compile the whole program to run.

Type python and then 3+2 and the computer responds with 5.

python
3+2
5

Consider doing this with Java. Java has no command-line interpreter (CLI), so, to print 5 as we did above, we have to write a complete program and then compile it. Here is Print5.java:

public class Print5 {
       public static void main(String[] args) {
        System.out.println("3+2=" + (Integer.toString(3+2)));
       }
}

To compile it, type javac Print5.java and run it with java Print5.

java Print5
3+2=5

With Java, we had to make a complete program to print 5. That includes a class and the main function, which tells Java where to start.

We can also have a main function with Python, which you usually do when you want to pass it arguments. It looks like this:

def main():
  print('3+2=', 3+2)
if __name__== "__main__":
  main()

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1 Comments

Abhishek Jalan

Nice!

Sagar Rabidas
Software Developer
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