Binary to octal conversion using Java
Binary to octal conversion using java :
Step 1 : Ask the user to enter a binary number.
[Logic for conversion from binary number to decimal number]
Step 2 : Declare two variables, one for storing decimal value and second for storing value of the power.
Step 3 : Use the while loop till binary number entered by user is greater than 0.
Step 4 : Use a statement to get the last digit of the binary number.
Step 5 : Use the statement for adding each digit by multiplying by the power of 2 and power starts with 0 till p-1 (where p is the number of digits in the binary number) by using power function.
Step 6 : Use the statement for removing last digit of the binary number and taking only remaining number and increase the value of the power by 1.
Step 7 : Repeat the steps 3 to 6 till the value of the loop does not get false.
[Logic for conversion from decimal number to octal number]
Step 8 : Now declare an array and a variable for pointing index value of the array.
Step 9 : Use the while loop till converted decimal number is greater than 0.
Step 10 : Divide the decimal number by 8 and store the remainder in the array and update the decimal number with the quotient.
Step 11 : Repeat the steps 9 and 10 till the decimal number is greater than 0.
Step 12 : Print the array in reverse order.
Code in Java :
//Java program to convert binary number to octal number
public class Binary_To_Octal
public static void main(String args)
//scanner class object creation
Scanner sc = new Scanner(System.in);
//input from user
System.out.print("Enter a binary number : ");
int binary = sc.nextInt();
//Declaring variable to store decimal number
int decimal = 0;
//Declaring variable to use in power
int n = 0;
//writing logic for the conversion from binary to decimal
while(binary > 0)
int temp = binary%10;
decimal += temp*Math.pow(2, n);
binary = binary/10;
int octal = new int;
int i = 0;
//writing logic for the conversion from decimal to octal
while(decimal > 0)
int r = decimal % 8;
octal[i++] = r;
decimal = decimal / 8;
System.out.print("Octal number : ");
for(int j = i-1 ; j >= 0 ; j--)
//closing scanner class(not compulsory, but good practice)
Enter a binary number : 101010
Octal number : 52