Solution:
Create a class named Operations as follows:
public class Operations {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
Solution:
Right-click the src folder and select New | Class.
Enter ReadScanner as the class name, and then click OK.
Import the java.util.Scanner package:
import java.util.Scanner;
In the main() enter the following:
public class ReadScanner { static Scanner sc = new Scanner(System.in); public static void main(String[] args) { System.out.print("Enter a number: "); int a = sc.nextInt(); System.out.print("Enter 2nd number: "); int b = sc.nextInt(); System.out.println("The sum is " + (a + b) + "."); } }Run the main program.
The output will be as follows:
Enter a number: 12 Enter 2nd number: 23 The sum is 35.
Solution:
Right-click the src folder and select New | Class.
Enter StockChangeCalculator as the class name, and then click OK.
Import the java.util.Scanner package:
import java.util.Scanner;
In the main() enter the following:
public class StockChangeCalculator{ static Scanner sc = new Scanner(System.in); public static void main(String[] args) { System.out.print("Enter the stock symbol: "); String symbol = sc.nextLine(); System.out.printf("Enter %s's day 1 value: ", symbol); double day1 = sc.nextDouble(); System.out.printf("Enter %s's day 2 value: ", symbol); double day2 = sc.nextDouble(); double percentChange = 100 * (day2 - day1) / day1; System.out.printf("%s has changed %.2f%% in one day.", symbol, percentChange); } }Run the main program.
The output should be similar to:
Enter the stock symbol: AAPL Enter AAPL's day 1 value: 100 Enter AAPL's day 2 value: 91.5 AAPL has changed -8.50% in one day.