Print an integer in binary format in Java

Question

I have a number and I want to print it in binary. I don't want to do it by writing an algorithm.

Is there any built-in function for that in Java?

Answer 1

Assuming you mean "built-in":

int x = 100; System.out.println(Integer.toBinaryString(x)); 

See Integer documentation.

(Long has a similar method, BigInteger has an instance method where you can specify the radix.)

Answer 2

Here no need to depend only on binary or any other format... one flexible built in function is available That prints whichever format you want in your program.. Integer.toString(int, representation)

Integer.toString(100,8) // prints 144 --octal representation  Integer.toString(100,2) // prints 1100100 --binary representation  Integer.toString(100,16) //prints 64 --Hex representation