Java lang.Long.toBinaryString() method with Examples

The java.lang.Long.toBinaryString() method returns a string representation of the long argument as an unsigned integer in base 2.

Example

Following is an example to implement the toBinaryString() method −

import java.lang.*;
public class Demo {
   public static void main(String[] args) {
      long l = 190;
      System.out.println("Number = " + l);
      /* returns the string representation of the unsigned long value
      represented by the argument in binary (base 2) */
      System.out.println("Binary is " + Long.toBinaryString(l));
      // returns the number of one-bits
      System.out.println("Number of one bits = "
   }
}

Output

Number = 190
Binary is 10111110
Number of one bits = 6

Example

Let us see another example wherein we are considering negative number −

import java.lang.*;
public class Demo {
   public static void main(String[] args) {
      long l = -25;
      System.out.println("Number = " + l);
      System.out.println("Binary is " + Long.toBinaryString(l));
      System.out.println("Number of one bits = " + Long.bitCount(l));
   }
}

Output

Number = -25
Binary is 1111111111111111111111111111111111111111111111111111111111100111
Number of one bits = 62