Decimal to Binary in Java: Explanation & Practice

Problem summary

Write a program that converts a decimal integer to its binary string representation.

Starter code

public class Main {
    public static void main(String[] args) {
        int decimal = 10; // Test case 1
        
        // Convert decimal to binary
        // Print: Binary: <result>
    }
}

Expected output and test cases

• 10 = 1010

  Binary: 1010

• 15 = 1111

  Binary: 1111

• 1 = 1

  Binary: 1

Hints

1. Divide by 2 and collect remainders
2. Build string in reverse
3. Or use Integer.toBinaryString()

Related Core Java Basics exercises

• Practice Automorphic Number Check in Java
• Practice Binary to Decimal in Java
• Practice Prime Factorization in Java

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