Question

In this lab, you complete a partially written Java program that includes methods that require multiple parameters (arguments). The program prompts the user for two numeric values. Both values should be passed to methods named calculateSum(), calculateDifference(), and calculateProduct(). The methods compute the sum of the two values, the difference between the two values, and the product of the two values. Each method should perform the appropriate computation and display the results. The source code file provided for this lab includes the variable declarations and the input statements. Comments are included in the file to help you write the remainder of the program. Instructions Write the Java statements as indicated by the comments. Execute the program. // Computation.java - This program calculates sum, difference, and product of two values. // Input: Interactive. // Output: Sum, difference, and product of two values. import java.util.Scanner; public class Computation { public static void main(String args[]) { double value1; String value1String; double value2; String value2String; Scanner input = new Scanner(System.in); System.out.println("Enter the first numeric value: "); value1String = input.nextLine(); value1 = Double.parseDouble(value1String); System.out.println("Enter second numeric value: "); value2String = input.nextLine(); value2 = Double.parseDouble(value2String); // Call calculateSum() here // Call calculateDifference() here // Call calculateProduct() here System.exit(0); } // End of main() method. // Write calculateSum() method here. // Write calculateDifference() method here. // Write calculateProduct() method here. } // End of Computation class.

Answer 1

// Computation.java - This program calculates sum, difference, and product of two values.
// Input: Interactive.
// Output: Sum, difference, and product of two values.

import java.util.Scanner;

public class Computation {
    public static void main(String args[]) {
        double value1;
        String value1String;
        double value2;
        String value2String;
        Scanner input = new Scanner(System.in);
        System.out.println("Enter the first numeric value: ");
        value1String = input.nextLine();
        value1 = Double.parseDouble(value1String);
        System.out.println("Enter second numeric value: ");
        value2String = input.nextLine();
        value2 = Double.parseDouble(value2String);
        // Call calculateSum() here
        calculateSum(value1, value2);
        // Call calculateDifference() here
        calculateDifference(value1, value2);
        // Call calculateProduct() here
        calculateProduct(value1, value2);
        System.exit(0);
    } // End of main() method.

    // Write calculateSum() method here.
    public static void calculateSum(double value1, double value2) {
        System.out.println(value1 + " + " + value2 + " = " + (value1 + value2));
    }

    // Write calculateDifference() method here.
    public static void calculateDifference(double value1, double value2) {
        System.out.println(value1 + " - " + value2 + " = " + (value1 - value2));
    }

    // Write calculateProduct() method here.
    public static void calculateProduct(double value1, double value2) {
        System.out.println(value1 + " * " + value2 + " = " + (value1 * value2));
    }
} // End of Computation class.