How to Write a Java Program to Increment an Integer Until It's Divisible by 3, 5, or 7

This tutorial will guide you step by step through a simple Java program that prompts the user for an integer, prints its value with a new line, and increments the integer by 1 until the new value is not divisible by 3, 5, or 7.

Understanding the Problem

The task involves several key points:

Getting an integer input from the user. Printing the integer with a new line and incrementing the value by 1. Continuing the loop until the new value is divisible by 3, 5, or 7.

Recommended Steps

Let's break down the steps to solve this problem in Java:

1. Getting User Input

To accept input from the user in Java, you can use the Scanner class. This class allows you to read from standard input (usually the keyboard).

import ;

Here is an example of how to use Scanner:

Scanner sc  new Scanner();

2. Printing and Incrementing

Once you have the integer input, you can print it and then increment it by 1. Remember to print it with a new line using () and add 1 to the integer using the operator.

Here is an example:

int n  (); // Read an integer from the userwhile (n % 3 ! 0  n % 5 ! 0  n % 7 ! 0) {    n   1;    (n); // Print the incremented value with a new line}

The modulo operator (%) is used to determine if the number is divisible by 3, 5, or 7.

Putting It All Together

Let's put everything together in a complete program. Here is the full code for your Java program:

import ;public class DivisibilityChecker {    public static void main(String[] args) {        Scanner sc  new Scanner(); // Creating a Scanner object        int n  (); // Reading an integer from the user        while (n % 3 ! 0  n % 5 ! 0  n % 7 ! 0) {            n   1; // Increment the value            (n); // Print the value with a new line        }        (); // Close the scanner to prevent resource leaks    }}

Conclusion

Writing this simple Java program not only helps you understand basic input/output operations and looping constructs in Java but also demonstrates the use of conditions and arithmetic operations. It's a great way to practice and build confidence in your programming skills.

Related Keywords

Java program input handling looping in Java