Want to learn how to code? Master the foundations of Java, an in-demand programming language. Get hands-on with immersive exercises, interactive quizzes, and earn certifications to build in-demand skills.

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Java

Java is a high-level, object-oriented language known for its portability and reliability. Mastering Java is key for developers to build scalable, secure software efficiently.

In this course, you will start by mastering the art of problem-solving with simple Java programs, such as the Bottle Filling example. You will learn how to structure your solutions, create execution sheets, and enhance your problem-solving abilities through practical exercises and quizzes. Progressing further, you will learn decision-making and branching in Java, understanding flowcharts, conditional expressions, and their application. You will also learn about Java basics, including the first Java program, fundamentals, conditional statements, and error categories, followed by in-depth lessons on working with Java strings and arrays. 

By the end of this course, you will have a solid understanding of Java programming fundamentals and the ability to solve real-world problems using Java.

Learn to Code: Java for Absolute Beginners


# Store the first `n` prime numbers in the array 
The following program stores the first `n` prime numbers to an array. The value of `n` is chosen by the user, and any number can be used. Here’s how to solve this problem:

* Start with an empty array of `n` elements.
* Store $2$ as the first prime number at the $0^{th}$ index.
* Keep checking every following integer by dividing it by every prime value in the array.
   * Check $3$ by taking the remainder after dividing it by all the prime values in the array. The only value in the current array is $2$. Since the remainder is non-zero, $3$ is stored in the array.
   * Then, check $4$ in the same way. Since the remainder of $4$ divided by $2$ is $0$, it's not stored in the array. 

> **Note:** We have added a helper function `printArray` to assist us in printing the array. We only need to pass the array and its size as arguments to the function and it will print the array.



Find prime numbers and traverse arrays in a circular manner.


Exercises for Loops

Find prime numbers and traverse arrays in a circular manner.

About the Course

Problem Solving with Simple Programs

Decisions and Branching

Java Basics

Repetition with Loops

Strings and Arrays

Methods

Appendix - Complex Programs

Wrap Up

Programs of Loops

Store the first `n` prime numbers in the array

Programs of Loops

Store the first n prime numbers in the array

Store the first `n` prime numbers in the array