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Best Java learning tips for competitive programming

You all might be familiar with the world-class video game called “Minecraft,” a sandbox video game created by Markus “Notch” Persson. Some of you might be aware that it is created using “Java programming language.” 

Yes, it is developed by java programming. Now, you might be excited to know what are the real-life applications of Java programming. Or the beginners might want to know what java programming is. Let’s check all the necessary details about Java and get the useful Java learning tips in the below section.

What is the Java programming language?

It is an object-oriented and general-purpose programing language, and James Gosling designed this language. Its applications’ compilation results in the bytecode, which is easily run on each platform. It can run using the JVM (Java Virtual Machine). 

Moreover, Java is also called a WORA (Write Once, Run Anywhere) programming language. As per the TIOBE Index for April 2019, Java ranked the first position for the developers and a popular programming language. 

What are real-life examples where Java is used?

Mobile Applications
Scientific Applications
Desktop GUI Applications
Enterprise Applications
Trading Application
Embedded Systems
Distributed Applications
Web-based Applications
Big Data Technologies
J2ME Apps

What are the most common reasons to learn the Java programming language?

Easy to Learn
Has an abundant API
Powerful Development Tools
Platform Independent
Has various Open Source Libraries
Popularity and High Salary
Has a Large Community
Free of Cost
Has great Documentation Support

Where can you learn the Java programming language?

Udemy Stackoverflow
edXGeeks for Geeks

There are some of the websites on which you can easily read out excellent Java programming-related blogs. Moreover, you can easily ask any query from the experts as they also offer a 24*7 live support facility to ask for Java-related homework and assignment queries.

What are the best Java learning tips for competition?

It is always helpful for you to use some Java learning tips as they make your learning process easier. So, without wasting more time, let’s check all the useful tips.

Learn the basics

It is important to know the fundamentals of any programming language. This is the perfect way to get started with something different. Do not get panic; keep learning the language concepts. Get to know the area, and you’ll gradually become familiar with it in less time.

Prefer fundamental classes

It is helpful to join the additional classes as you can clear your doubts from your tutors personally. Moreover, you can discuss the things with your classmates which help you to learn new things. Additional classes are also helpful for revising the concepts.

Practice Coding

The best thing to do when you have learned the fundamentals is to brush up your daily practice skills. True knowledge only comes when you implement what you have learned, as ‘Practice Makes a Perfect Man’ is said. So, code more than just reading to improve your learning curve. That will build your trust and confidence. Remember, practice always makes you better.

 The interface is better than the general class

There is no added heritage in Java, but if you want to implement anything like multiple inheritances without using the extends keyword, the interface should make it simpler. If things don’t go as you expected, you will still need to have an app by your side. An abstract class provides no right to provide a range of methods, just abstract methods.

Avoid random objects

Object development is one of Java’s most expensive operations. While making an object, you are using machine memory and processor speed to drive it. Objects should only be produced if they are required.

Don’t confuse between Collection and Array List

Developers also find it difficult to determine whether to go for data structure type Array or type ArrayList. They have distinct characteristics and can be seen in various cases. Arrays have fixed size, but variable sizes are available in ArrayLists. Changing the elements in ArrayList is much easier than Changing Array.

Use the series carefully

Developers also find it difficult to determine whether to go for a data structure type Array of type ArrayList. They have distinct characteristics and can be seen in various cases. Arrays have fixed size, but variable sizes are available in ArrayLists. Changing the elements in ArrayList is much easier than Changing Array.

Patience is the key

Learning Java can take longer to learn due to the amount of language content, but don’t hurry up; learn at your own speed. Mastering Java is a time-consuming learning process. And at some point, even the best coders take their time to learn the concepts. Devote your time to learn each concept. Patience is crucial to success.

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How to use java for competitive programming?

We discuss java learning tips for competitive programming. Besides this, these are the following concepts to learn:

Fast Addition or Division by 2

Multiplying by 2 means shifting all the bits to the left, and dividing by 2 means shifting to the right.

Example : 2 (Binary 10): shifting left 4 (Binary 100) and right 1 (Binary 1)

n = n << 1; // Multiply n with 2 

n = n >> 1; // Divide n by 2 

Calculating the most significant digit

It can be used directly for determining the most important digit of any number log.
Assume that the number is P, then

Let double K = Math.log10(P);

now K = K Math.floor(K);

int M = (int)Math.pow(10, K);

M will be the most significant digit.

Counting the number of digits directly

Instead of looping, we can use log efficiently to calculate several digits in a number:

No. of digits in N = Math.floor(Math.log10(N)) + 1;

Reviewing for a prime number

Java has an inbuilt ProbablePrime() method. It returns true if this BigInteger is probably prime(with some certainty), false if it’s composite.

 Rotation and Frequency

We can use it to rotate a collection or an array by a specified distance. You can also use the COLLECTION FREQUENCY method to get the Frequency of specified elements in a collection or an array.

How to become an expert in competitive programming?

We know that behind any problem in the high-level language is always code. Yet only logic is not enough to write flawless code. It asks for an in-depth understanding of technical terms such as complexity, syntax, and the art of creating comprehensive solutions in the shortest codes. 

All of this can only be obtained through practice. If practice combines with proper direction, it leads to a masterpiece of a learning concept. The given steps will help to achieve the goal of java learning:-

Get absolute understanding

First of all, you need to study all the programming language concepts in depth. Use standard books. Today there are many online forums available where geeks from all over the world share their expertise and seek to simplify the concepts and difficult tasks. Keep each concept in your memory and implement it in the hour of need.

Implementation in real life

When a user gets used to the codes and the simple programming, try to build codes that will solve your everyday problems. This may include any student’s report card, ticket booking system, library management system, etc. They will make you understand the code and methods to implement the programs.

Try to simplify your code

Now the next step would be to shorten the code. Suppose you render the library management system easy code. Now try to abbreviate it in such a way as to accomplish the same task in a much simpler and shorter manner. You can only see the issue first, then make your own code. See the best approach now for learning how to reduce it. It is the most significant and most critical step of transformation from simple programming to competitive programs.

Read also…..

Causes of Memory Leaks in Java and How to Avoid Them


From the above discussion, now you know the best Java learning tips for competitive programming. We have listed down some java learning platforms that help you to learn it more easily. Follow the above tips that will help you guide to competitive programming and do some coding skills tests to check your knowledge.

If you are still facing a problem with competitive programming, you can get programming assignment help from us. We compete for knowledge of java programming. You can contact us from anywhere in the world at any time. To support you with your questions of the best Java learning tips, we are available 24 * 7.

And If you’re also looking for a quick, reasonable, best and convenient help in doing your Java homework help, you are in the right place. Do not hesitate, ask our expert programmer for Java Homework Help.

Frequently Asked Questions

Is it easy to learn Java?

Java is pretty easy to learn and easily understood by beginners as it has a syntax related to English. A user can also learn Java from various online resources, such as Youtube, edX, and so on. All these will guide you to get begun with Java and make you an expert in it.

Should I learn Java or Python?

Java has more popularity, but Python is extensively used. People who work outside the development industry have also applied Python for several organizational objectives. Similarly, Java is relatively faster, but Python is the best option for lengthy programs.

How long will it take to learn Java?

On average, a Java learner takes approximately 1–2 years, only when you spend 2–3 hours a day by practicing coding. Try to familiarise yourself with all points where you can easily edit others’ code or write your own basic apps that might take up to four months.

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