In this source code example, we will write a Java program to convert binary numbers to decimal equivalent numbers.

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Java Convert Binary to Decimal

This class converts a Binary number to a Decimal number:

package net.sourcecodeexamples.java.Conversions;

import java.util.Scanner;

/**
 * This class converts a Binary number to a Decimal number
 *
 */
class BinaryToDecimal {

    /**
     * Main Method
     *
     * @param args Command line arguments
     */
    public static void main(String args[]) {
        Scanner scanner = new Scanner(System.in);
        int binNum, binCopy, d, s = 0, power = 0;
        System.out.print("Enter Binary number: ");
        binNum = scanner.nextInt();
        binCopy = binNum;
        while (binCopy != 0) {
            d = binCopy % 10;
            s += d * (int) Math.pow(2, power++);
            binCopy /= 10;
        }
        System.out.println("Decimal equivalent:" + s);
        scanner.close();
    }
}

Output

Enter Binary number: 1111
Decimal equivalent: 15

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