🚀 Programming Example

Java Program - Sum of Prime Numbers in a Range

👁 132 Views

💻 Practical Program

📘 Step Learning

This program calculates the sum of all prime numbers in a given range.

📌 Information & Algorithm

Given Input:

Expected Output:

💻 Program Code

public class SumOfPrimes {
    public static void main(String[] args) {
        int start = 10, end = 50;
        int sum = 0;

        for (int i = start; i <= end; i++) {
            if (isPrime(i))
                sum += i;
        }
        System.out.println("Sum of prime numbers between " + start + " and " + end + " is: " + sum);
    }

    public static boolean isPrime(int number) {
        if (number <= 1)
            return false;
        for (int i = 2; i <= number / 2; i++) {
            if (number % i == 0)
                return false;
        }
        return true;
    }
}

🎯 How to learn from this example

First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.

🔥 Practice suggestion

Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.