Java program to print the multiplication table of a number

Java program to print the multiplication table of a number. Printing a multiplication table of a given number is a straightforward programming task that involves looping through a range of numbers and multiplying each by the given number. Here’s a Java program that prompts the user to enter a number and then prints its multiplication table up to 10.

Java Program to Print the Multiplication Table of a Number

import java.util.Scanner;

public class MultiplicationTable {
    public static void main(String[] args) {
        // Create a Scanner object to read input from the user
        Scanner scanner = new Scanner(System.in);

        // Prompt the user to enter a number
        System.out.print("Enter a number: ");
        int number = scanner.nextInt();

        // Print the multiplication table
        printMultiplicationTable(number);
    }

    // Method to print the multiplication table of a number
    public static void printMultiplicationTable(int n) {
        for (int i = 1; i <= 10; i++) {
            int result = n * i;
            System.out.println(n + " x " + i + " = " + result);
        }
    }
}

Explanation of the Code

Let’s break down the program step-by-step to understand how it works.

1. Importing the Scanner Class: We import the Scanner class from the java.util package to read input from the user.

import java.util.Scanner;

2. Creating the Main Class: We create a public class named MultiplicationTable. In Java, the class name should match the filename.

public class MultiplicationTable {

3. Main Method: The main method is the entry point of the program. Inside this method, we will write the code to print the multiplication table of a number.

public static void main(String[] args) {

4. Creating a Scanner Object: We create a Scanner object to read input from the user.

Scanner scanner = new Scanner(System.in);

5. Reading Input from the User: We prompt the user to enter a number and store this value in a variable.

System.out.print("Enter a number: ");
int number = scanner.nextInt();

6. Printing the Multiplication Table: We call the printMultiplicationTable method to print the multiplication table of the number.

printMultiplicationTable(number);

7. Method to Print the Multiplication Table: The printMultiplicationTable method prints the multiplication table of the given number from 1 to 10. This method uses a for loop to iterate through the numbers from 1 to 10, multiplying each by the given number and printing the result.

public static void printMultiplicationTable(int n) {
    for (int i = 1; i <= 10; i++) {
        int result = n * i;
        System.out.println(n + " x " + i + " = " + result);
    }
}

Explanation of the printMultiplicationTable Method

1. Loop to Print the Multiplication Table: The for loop iterates through the numbers from 1 to 10. In each iteration, it multiplies the given number n by the loop variable i and prints the result in the format n x i = result.

for (int i = 1; i <= 10; i++) {
    int result = n * i;
    System.out.println(n + " x " + i + " = " + result);
}

Running the Program

To run the program, follow these steps:

1. Save the code in a file named MultiplicationTable.java.
2. Open a command prompt or terminal and navigate to the directory where you saved the file.
3. Compile the program using the following command:

javac MultiplicationTable.java

4. Run the compiled program using the following command:

java MultiplicationTable

5. Follow the prompt to enter a number. The program will display its multiplication table.

Example Output

If you run the program and enter 5 as the number, the output will be:

Enter a number: 5
5 x 1 = 5
5 x 2 = 10
5 x 3 = 15
5 x 4 = 20
5 x 5 = 25
5 x 6 = 30
5 x 7 = 35
5 x 8 = 40
5 x 9 = 45
5 x 10 = 50

If you run the program and enter 7 as the number, the output will be:

Enter a number: 7
7 x 1 = 7
7 x 2 = 14
7 x 3 = 21
7 x 4 = 28
7 x 5 = 35
7 x 6 = 42
7 x 7 = 49
7 x 8 = 56
7 x 9 = 63
7 x 10 = 70

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What did we learn from this article?

Printing the multiplication table of a number is a fundamental exercise that helps in understanding loops and arithmetic operations in programming. This Java program demonstrates how to print the multiplication table of a number by iterating through a range of numbers and multiplying each by the given number. By practicing such basic programs, you can strengthen your problem-solving skills and gain confidence in your ability to write efficient Java code. Keep practicing and exploring more problems to enhance your programming skills.