Java Long LowestOneBit Method

Introduction

In this lab, you will learn how to use the lowestOneBit() method of the Long class in Java. This method returns the single one-bit long value of long passed as an argument in the position of the lowest order(rightmost) and returns zero if the passed argument is zero.

Create a Java file

Create a file named LowestOneBit.java in the ~/project directory by running the following command in the terminal:

touch ~/project/LowestOneBit.java

Write the Java code

Open the LowestOneBit.java file in a text editor and paste the below code in it:

import java.util.Scanner;

public class LowestOneBit {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        try {
            System.out.print("Enter a long integer: ");
            long input = sc.nextLong();

            // Get the lowest one-bit value
            long lowestOneBit = Long.lowestOneBit(input);

            if (input != 0) {
                System.out.println("The lowest one-bit value of " + input + " is " + lowestOneBit);
            } else {
                System.out.println("The value of 0 does not have a lowest one-bit.");
            }
        } catch (Exception e) {
            System.out.println("Invalid input. Please enter a long integer.");
        } finally {
            sc.close();
        }
    }
}

Compile and run the code

Compile the LowestOneBit.java file by running the following command:

javac LowestOneBit.java

Run the compiled file by running the following command:

java LowestOneBit

Test the program

When you run the program, the following output is displayed:

Enter a long integer: 95232
The lowest one-bit value of 95232 is 1024

Enter any long integer of your choice and the program will output the lowest one-bit value of the input.

Enter a long integer: -15
The lowest one-bit value of -15 is 1

If the input is 0, the program will output that the value of 0 does not have a lowest one-bit.

Enter a long integer: 0
The value of 0 does not have a lowest one-bit.

Summary

In this lab, you learned how to use the lowestOneBit() method of the Long class in Java to get the single one-bit long value of long passed as an argument in the position of the lowest order(rightmost) and returns zero if the passed argument is zero. You first created a Java file and wrote the code to implement the lowestOneBit() method. You compiled and ran the code to test the program and verified the output by entering different long integers.