Want to learn how to code? Master the foundations of Java, an in-demand programming language. Get hands-on with immersive exercises, interactive quizzes, and earn certifications to build in-demand skills.

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Java

Java is a high-level, object-oriented language known for its portability and reliability. Mastering Java is key for developers to build scalable, secure software efficiently.

In this course, you will start by mastering the art of problem-solving with simple Java programs, such as the Bottle Filling example. You will learn how to structure your solutions, create execution sheets, and enhance your problem-solving abilities through practical exercises and quizzes. Progressing further, you will learn decision-making and branching in Java, understanding flowcharts, conditional expressions, and their application. You will also learn about Java basics, including the first Java program, fundamentals, conditional statements, and error categories, followed by in-depth lessons on working with Java strings and arrays. 

By the end of this course, you will have a solid understanding of Java programming fundamentals and the ability to solve real-world problems using Java.

Learn to Code: Java for Absolute Beginners

# Task
Write a program that takes a positive number (`num`) and finds the power of $2$ nearest to that number. The program stores the resulting value to `pwr`.


If there are two candidate values, display the smaller one. For example, $2$ and $4$ are both the powers of $2$ nearest to $3$. The function should display $2$ because it's smaller than 4.


---

## Sample input 1
```t
num = 40
``` 
## The resulting value 1
```t
pwr = 32
```
## Expected output 1
```t
The 32 is the power of 2 nearest to 40.
```
---
## Sample input 2
```t
num = 50
``` 
## The resulting value 2
```t
pwr = 64
```
## Expected output 2
```t
The 64 is the power of 2 nearest to 50.
```
---
## How to test your program
When you click the "Test" button under the code widget, you'll get the two options explained below:

* **Show Results:** It shows the sample inputs and their respective results in comparison with the expected output. The actual output is the power calculated to display the results. The word "Succeeded" in the last column indicates that the calculated output matches the expected output. For example, if `num` is `50` and the `pwr` is `64`, then the last column shows "Succeeded".

* **Show Console:** It shows the output from the `print` statements used in your code. You can use this to verify your calculations on the basis of sample test inputs. For example, if `num` is `50`, then the output on the console should be `The 64 is the power of 2 nearest to 50.`.

> **Note:** You don't have to worry about the `static` keyword, for testing purposes, we have removed `static` from the `public void main (String[] args)`. The lines in the solution are added because we have to declare variables using `UserValues`.

Find the nearest power of 2 for a number that has been input.


Challenge: The Nearest Power of 2

Find the nearest power of 2 for a number that has been input.

About the Course

Problem Solving with Simple Programs

Decisions and Branching

Java Basics

Repetition with Loops

Strings and Arrays

Methods

Appendix - Complex Programs

Wrap Up

Challenge: The Nearest Power of 2

Task