Java Exercises: Convert a octal number to a binary number
Java Basic: Exercise-26 with Solution
Write a Java program to convert a octal number to a binary number.
Octal number: The octal numeral system is the base-8 number system, and uses the digits 0 to 7.
Binary number: A binary number is a number expressed in the base-2 numeral system or binary numeral system. This system uses only two symbols: typically 1 (one) and 0 (zero).
Test Data:
Input any octal number: 7
Pictorial Presentation: Octal to Binary number

Sample Solution:
Java Code:
import java.util.Scanner;
public class Exercise26 {
public static void main(String[] args)
{
Scanner in = new Scanner(System.in);
int[] octal_numvalues = {0, 1, 10, 11, 100, 101, 110, 111};
long octal_num, tempoctal_num, binary_num, place;
int rem;
System.out.print("Input any octal number: ");
octal_num = in.nextLong();
tempoctal_num = octal_num;
binary_num = 0;
place = 1;
while (tempoctal_num != 0)
{
rem = (int)(tempoctal_num % 10);
binary_num = octal_numvalues[rem] * place + binary_num;
tempoctal_num /= 10;
place *= 1000;
}
System.out.print("Equivalent binary number: " + binary_num+"\n");
}
}
Sample Output:
Input any octal number: 7 Equivalent binary number: 111
Flowchart:

Java Code Editor:
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Previous: Write a Java program to convert a octal number to a decimal number.
Next: Write a Java program to convert a octal number to a hexadecimal number.
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Java: Tips of the Day
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Ref: https://bit.ly/3xXcFZt
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