﻿ Java - Validates 2 floating numbers up to 2 decimal places

# Java: Accepts two floating­point numbers and checks whether they are the same up to two decimal places

## Java Conditional Statement: Exercise-32 with Solution

Write a Java program that accepts two floating­point numbers and checks whether they are the same up to two decimal places.

Test Data
Input first floating­point number: 1235
Input second floating­point number: 2534

Pictorial Presentation: Sample Solution:

Java Code:

``````import java.util.Scanner;
public class Exercise32 {

public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Input first floating­point number: ");
double num1 = input.nextDouble();
System.out.print("Input second floating­point number: ");
double num2 = input.nextDouble();
input.close();

if (Math.abs(num1 - num2) <= 0.01) {
System.out.println("These numbers are the same.");
}
else {
System.out.println("These numbers are different.");
}
}
}
```
```

Sample Output:

```Input first floating­point number: 1235
Input second floating­point number: 2534
These numbers are different.
```

Flowchart: Java Code Editor:

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## Java: Tips of the Day

IsPowerOfTwo

Checks if a value is positive power of two.

To understand how it works let's assume we made a call IsPowerOfTwo(4).

As value is greater than 0, so right side of the && operator will be evaluated.

The result of (~value + 1) is equal to value itself. ~100 + 001 => 011 + 001 => 100. This is equal to value.

The result of (value & value) is value. 100 & 100 => 100.

This will value the expression to true as value is equal to value.

```public static boolean isPowerOfTwo(final int value) {
return value > 0 && ((value & (~value + 1)) == value);
}
```

Ref: https://bit.ly/3sA5d4I

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