﻿ Java - Display the multiplication table of a given integer

# Java: Display the multiplication table of a given integer

## Java Conditional Statement: Exercise-14 with Solution

Write a Java program to display the multiplication table of a given integer.

Test Data
Input the number (Table to be calculated) : Input number of terms :5

Pictorial Presentation: Sample Solution:

Java Code:

``````import java.util.Scanner;
public class Exercise14 {

public static void main(String[] args)

{
int j,n;

System.out.print("Input the number(Table to be calculated): ");
{
System.out.print("Input number of terms : ");
Scanner in = new Scanner(System.in);
n = in.nextInt();

System.out.println ("\n");
for(j=0;j<=n;j++)

System.out.println(n+" X "+j+" = " +n*j);
}
}
}
```
```

Sample Output:

```Input the number(Table to be calculated): Input number of terms : 5
5 X 0 = 0
5 X 1 = 5
5 X 2 = 10
5 X 3 = 15
5 X 4 = 20
5 X 5 = 25
```

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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