﻿ Java - Print a floating-point number in a specified format

# Java: Print a floating-point number in a specified format

## Java Conditional Statement: Exercise-4 with Solution

Write a Java program that reads a floating-point number and prints "zero" if the number is zero. Otherwise, print "positive" or "negative". Add "small" if the absolute value of the number is less than 1, or "large" if it exceeds 1,000,000.

Test Data
Input value: 25

Pictorial Presentation:

Sample Solution:

Java Code:

``````import java.util.Scanner;
public class Exercise4 {

public static void main(String[] args)
{
Scanner in = new Scanner(System.in);
System.out.print("Input value: ");
double input = in.nextDouble();

if (input > 0)
{
if (input < 1)
{
System.out.println("Positive small number");
}
else if (input > 1000000)
{
System.out.println("Positive large number");
}
else
{
System.out.println("Positive number");
}
}
else if (input < 0)
{
if (Math.abs(input) < 1)
{
System.out.println("Negative small number");
}
else if (Math.abs(input) > 1000000)
{
System.out.println("Negative large number");
}
else
{
System.out.println("Negative number");
}
}
else
{
System.out.println("Zero");
}
}
}
```
```

Sample Output:

```Input value: 25
Positive number
```

Flowchart:

Java Code Editor:

Improve this sample solution and post your code through Disqus

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

﻿

## 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

We are closing our Disqus commenting system for some maintenanace issues. You may write to us at reach[at]yahoo[dot]com or visit us at Facebook