Lesson 1: Introduction to Java

Activity 1: Printing the Results of Simple Arithmetic Operations

Solution:

1. Create a class named Operations as follows:

   public class Operations

   {

2. Within main(), print a sentence describing the operation on the values you will be performing along with the result:

   public static void main(String[] args) {

   System.out.println("The sum of 3 + 4 is " + (3 + 4));

   System.out.println("The product of 3 + 4 is " + (3 * 4));

   }

   }

   The output will be as follows:

   The sum of 3 + 4 is 7

   The product of 3 + 4 is 12

Activity 2: Reading Values from the User and Performing Operations Using the Scanner Class.

Solution:

1. Right-click the src folder and select New | Class.
2. Enter ReadScanner as the class name, and then click OK.
3. Import the java.util.Scanner package:

   import java.util.Scanner;

4. In the main() enter the following:

   public class ReadScanner

   {

   static Scanner sc = new Scanner(System.in);

   public static void main(String...