Java Program to Illustrate the usage of Octal Integer

import java.io.*;

class GFG {
    public static void main(String[] args)
    {
        // Variable Declaration
        int a;

        // storing normal integer value
        a = 20;
        System.out.println("Value of a: " + a);

        // storing octal integer value
        // just add 0 followed octal representation
        a = 024;
        System.out.println("Value of a: " + a);

        // convert octal representation to integer
        String s = "024";
        int c = Integer.parseInt(s, 8);
        System.out.println("Value of c: " + c);

        // get octal representation of a number
        int b = 50;
        System.out.println(
            "Octal Representation of the number " + b
            + " is: " + Integer.toOctalString(b));
    }
}

// Arithmetic operations on Octal numbers

import java.io.*;

class GFG {
    public static void main(String[] args)
    {
        int a, b;

        // 100
        a = 0144;

        // 20
        b = 024;

        System.out.println("Value of a: " + a);
        System.out.println("Value of b: " + b);
        System.out.println("Addition: " + (a + b));
        System.out.println("Subtraction: " + (a - b));
        System.out.println("Multiplication: " + (a * b));
        System.out.println("Division: " + (a / b));
    }
}