Java Program to Convert Binary Number to Octal

In this example, you will learn to convert any binary number to octal number. The user will ask to enter a binary number and converts it into an octal number.

Enter a binary number: 1110
Octal number: 16

1 2	Enter a binary number: 1110 Octal number: 16

Example: Convert Binary Number to Octal

import java.util.Scanner;
public class Bin2oct {
  public static void main(String[] args) {
    int binary;
    int rem;
    int decimal = 0;
    int octal = 0;
    int i = 1;
  
    Scanner scan = new Scanner(System.in);
    System.out.print("Enter a binary number: ");
    binary = scan.nextInt();
  
    /*convert binary to decimal number first*/
    while(binary != 0)
    {
       rem = binary % 10;
       decimal = decimal +(rem * i);
       binary = binary / 10;
       i = i * 2;
    }
    /*Then convert decimal to octal number*/
    i = 1;
    while(decimal != 0)
    {
       rem = decimal % 8;
       octal = octal +(rem * i);
       decimal = decimal / 8;
       i = i * 10;
    }
    System.out.print("Octal number: "+octal);
  }
}

import java.util.Scanner;

public class Bin2oct {

public static void main(String[] args) {

int binary;

int rem;

int decimal = 0;

int octal = 0;

int i = 1;

Scanner scan = new Scanner(System.in);

System.out.print("Enter a binary number: ");

binary = scan.nextInt();

/*convert binary to decimal number first*/

while(binary != 0)

{

rem = binary % 10;

decimal = decimal +(rem * i);

binary = binary / 10;

i = i * 2;

}

/*Then convert decimal to octal number*/

i = 1;

while(decimal != 0)

{

rem = decimal % 8;

octal = octal +(rem * i);

decimal = decimal / 8;

i = i * 10;

}

System.out.print("Octal number: "+octal);

}

When you run the program, the output will be following:

Enter a Binary Number: 1110
Hexadecimal value: 69

1 2	Enter a Binary Number: 1110 Hexadecimal value: 69