Skip to content
Related Articles

Related Articles

Improve Article

Java lang.Long.toBinaryString() method with Examples

  • Last Updated : 05 Dec, 2018
Geek Week


The java.lang.Long.toBinaryString() method returns a string representation of the long argument as an unsigned integer in base 2. It accepts an argument in Long data-type and returns the corresponding binary string.

Syntax:

public static String toBinaryString(long num)

Parameters : The function accepts a single mandatory parameter: 
num - This parameter specifies the number to be converted to binary string. 
It is of Long data-type.

Return Value: This function returns the string representation of the unsigned Long value represented by the argument in binary (base 2).

Examples:

Input : 10 
Output : 1010 

Input : 9
Output : 1001 

Program 1 : The program below demonstrates the working of function.






// Java program to demonstrate
// of java.lang.Long.toBinaryString() method
import java.lang.Math;
  
class Gfg1 {
  
    // driver code
    public static void main(String args[])
    {
  
        long l = 10;
        // 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));
  
        l = 20987752;
        System.out.println("Binary is " + Long.toBinaryString(l));
    }
}

Output:

Binary is 1010
Binary is 1010000000011111101101000

Program 2: The program below demonstrates the working function when a negative number is passed.




// Java program to demonstrate overflow
// of java.lang.Long.toBinaryString() method
import java.lang.Math;
  
class Gfg1 {
  
    // driver code
    public static void main(String args[])
    {
        // conversion of a negative number to Binary
        long l = -13;
        System.out.println("Binary is " + Long.toBinaryString(l));
    }
}

Output:

Binary is 1111111111111111111111111111111111111111111111111111111111110011

Errors and Exceptions: Whenever a decimal number or a string is passed as an argument, it returns an error message which says “incompatible types”.

Program 3: The program below demonstrates the working function when a string number is passed.




// Java program to demonstrate overflow
// of java.lang.Long.toBinaryString() method
import java.lang.Math;
  
class Gfg1 {
  
    // driver code
    public static void main(String args[])
    {
  
        // error message thrown when a string is passed
        System.out.println("Binary is " + Long.toBinaryString("10"));
    }
}

Output:

prog.java:12: error: incompatible types: String cannot be converted to long
    System.out.println("Binary is " + Long.toBinaryString("10"));

Program 4: The program below demonstrates the working function when a decimal is passed.




// Java program to demonstrate overflow
// of java.lang.Long.toBinaryString() method
import java.lang.Math;
  
class Gfg1 {
  
    // driver code
    public static void main(String args[])
    {
  
        // error message thrown when a decimal is passed
        System.out.println("Binary is " + Long.toBinaryString(10.25));
    }
}

Output:

prog.java:12: error: incompatible types: possible lossy conversion from double to long
    System.out.println("Binary is " + Long.toBinaryString(10.25));

Attention reader! Don’t stop learning now. Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. To complete your preparation from learning a language to DS Algo and many more,  please refer Complete Interview Preparation Course.




My Personal Notes arrow_drop_up
Recommended Articles
Page :