DecimalToOctal.java

import java.util.Scanner;

public class DecimalToOctal {

	public static void main(String[] args) {

		// Initializing a scanner object so the user can write a number
		
		@SuppressWarnings("resource")
		Scanner sc = new Scanner(System.in);
		System.out.println("Write an integer that you would like to change into an octal number: ");

		// x will equal to the users input
		int x = sc.nextInt();

		// array's remainder will be initialized
		int array_value;

		String finalAnswer = "";

		// Initializing an array of characters 0-7 since that's what octals use
		char octalNumbers[] = { '0', '1', '2', '3', '4', '5', '6', '7' };

		// initializing a message before the X value changes
		String message = ("The octal converstion for " + x + " = ");

		// while loop stops when the x value is 0
		while (x != 0) {

			array_value = x % 8;
			finalAnswer = octalNumbers[array_value] + finalAnswer;
			x = x / 8;

		}

		// prints out the final message
		System.out.print(message + finalAnswer);

	}

}