Java Program for Decimal to Binary Conversion

// Java program to convert a decimal
// number to binary number
import java.io.*;

class GFG 
{
    // function to convert decimal to binary
    static void decToBinary(int n)
    {
        // array to store binary number
        int[] binaryNum = new int[1000];
 
        // counter for binary array
        int i = 0;
        while (n > 0) 
        {
            // storing remainder in binary array
            binaryNum[i] = n % 2;
            n = n / 2;
            i++;
        }
 
        // printing binary array in reverse order
        for (int j = i - 1; j >= 0; j--)
            System.out.print(binaryNum[j]);
    }
    
    // driver program
    public static void main (String[] args) 
    {
        int n = 17;
          System.out.println("Decimal - " + n);
        System.out.print("Binary - ");
          decToBinary(n);
    }
}

// Java program to Decimal to binary conversion
// using bitwise operator
// Size of an integer is assumed to be 32 bits

class gfg {
    // Function that convert Decimal to binary
    public void decToBinary(int n)
    {
        // Size of an integer is assumed to be 32 bits
        for (int i = 31; i >= 0; i--) {
            int k = n >> i;
            if ((k & 1) > 0)
                System.out.print("1");
            else
                System.out.print("0");
        }
    }
}

class geek {
    // driver code
    public static void main(String[] args)
    {
        gfg g = new gfg();
        int n = 32;
          System.out.println("Decimal - " + n);
         System.out.print("Binary - ");
        g.decToBinary(n);
    }
}

// Java implementation of the approach
import java.io.*;

class GFG {

    // Function to return the binary
    // equivalent of decimal value N
    static int decimalToBinary(int N)
    {

        // To store the binary number
        int B_Number = 0;
        int cnt = 0;
        while (N != 0) {
            int rem = N % 2;
            double c = Math.pow(10, cnt);
            B_Number += rem * c;
            N /= 2;

            // Count used to store exponent value
            cnt++;
        }

        return B_Number;
    }

    // Driver code
    public static void main(String[] args)
    {

        int N = 17;
          System.out.println("Decimal - " + N);
          System.out.print("Binary - ");
        System.out.println(decimalToBinary(N));
    }
}

// This code is contributed by ajit.

public class GFG {

    // Main driver method
    public static void main(String[] args)
    {
        int decimal = 10;
        String binary = decimalToBinary(decimal);
        System.out.println("Decimal: " + decimal);
        System.out.println("Binary: " + binary);
    }

    public static String decimalToBinary(int n)
    {
        int remainder, quotient = n;
        String binaryNum = "";
        while (quotient > 0) {
            remainder = quotient % 2;
            binaryNum
                = Integer.toString(remainder) + binaryNum;
            quotient = quotient / 2;
        }
        return binaryNum;
    }
}