Java programming project Allow the user to type in a integer

Java programming project. Allow the user to type in a integer or floating point decimal number. Then, you will calculate and display the binary equivalent. Use 2’s complement for negative numbers

Solution

import java.util.*;
class DecimalBinary{

public static void main(String a[]){
   System.out.println(\"Enter number: \");

   Scanner sc=new Scanner(System.in);
   int n=sc.nextInt();

   System.out.println(\"Binary representation is \");
   System.out.println(Integer.toBinaryString(n));

}
}

===========================

akshay@akshay-Inspiron-3537:~$ java DecimalBinary
Enter number:
-23
Binary representation is
11111111111111111111111111101001