Java Program to Convert Decimal to Binary

In this tutorial, we are going to see how to write a java program to convert a decimal number to a binary number in Java using the toBinaryString() method. The java.lang.Integer.toBinaryString() method returns a string representation of the integer argument as an unsigned integer in base 2.

Java Program to Convert Decimal to Binary :
import java.util.Scanner;

class Main
    public static void main(String args[])
      Scanner sc = new Scanner(;
      System.out.print("Enter a decimal number : ");
      //read the decimal number
      int nbr = sc.nextInt();

      String str = Integer.toBinaryString(nbr);
      System.out.println("The binary number is : "+str);


Enter a decimal number : 25
The binary number is : 11001
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