Java Convert Binary to a Octal

In this source code example, we will write a Java program that converts any Binary Number to an Octal Number.

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Java Convert Binary to an Octal

Below Java programs converts any Binary Number to an Octal Number:

package net.sourcecodeexamples.java.Conversions;

import java.util.Scanner;

/**
 * Converts any Binary number to an Octal Number
 *
 * @author https://www.sourcecodeexamples.net/
 */
public class BinaryToOctal {

    /**
     * Main method
     *
     * @param args Command line arguments
     */
    public static void main(String args[]) {
        try (Scanner sc = new Scanner(System.in)) {
            System.out.print("Input the binary number: ");
            int b = sc.nextInt();
            System.out.print("Octal equivalent: " + convertBinaryToOctal(b));
        }
    }

    /**
     * This method converts a binary number to an octal number.
     *
     * @param binary The binary number
     * @return The octal number
     */
    public static String convertBinaryToOctal(int binary) {
        String octal = "";
        int currBit = 0, j = 1;
        while (binary != 0) {
            int code3 = 0;
            for (int i = 0; i < 3; i++) {
                currBit = binary % 10;
                binary = binary / 10;
                code3 += currBit * j;
                j *= 2;
            }
            octal = code3 + octal;
            j = 1;
        }
        return octal;
    }
}

Output

Input the binary number: 1111
Octal equivalent: 17

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