Example: Java program using built-in Integer.toBinaryString()

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// Java program using built-in Integer.toBinaryString()
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        // Step-1 Input
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter a decimal number: ");
        int num = sc.nextInt();

        // Step-2 Use built-in method
        String binary = Integer.toBinaryString(num);

        // Step-3 Output result
        System.out.println("Binary representation: " + binary);
        sc.close();
    }
}