﻿ Java - Convert an integer into binary representation

# Java: Accept an integer and convert it into a binary representation

## Java Basic: Exercise-163 with Solution

Write a Java program that will accept an integer and convert it into a binary representation. Now count the number of bits equal to zero in this representation.

Visual Presentation: Sample Solution:

Java Code:

`````` import java.util.Scanner;

public class Solution {
// Method to count the number of zero bits in the binary representation of a number
public static int countBitsTozeroBasedOnString(int n) {
int ctr = 0; // Initialize counter to count zero bits
String binaryNumber = Integer.toBinaryString(n); // Convert integer 'n' to its binary representation
System.out.print("Binary representation of " + n + " is: " + binaryNumber); // Display binary representation
for (char ch : binaryNumber.toCharArray()) {
ctr += ch == '0' ? 1 : 0; // Increment counter for each '0' bit encountered
}
return ctr; // Return count of zero bits
}

public static void main(String[] args) {
Scanner in = new Scanner(System.in); // Create Scanner object to take user input
System.out.print("Input first number: "); // Prompt user to input a number
int n = in.nextInt(); // Read input number

System.out.println("\nNumber of zero bits: " + countBitsTozeroBasedOnString(n)); // Display count of zero bits
}
}
```
```

Sample Output:

```Input first number:  25
Binary representation of 25 is: 11001
Number of zero bits: 2s
```

Flowchart: Java Code Editor: