Chapter 5.3, Problem 18SC

Explanation of Solution

Program:

The earthquake program is as follows:

File name: “Earth.java”

//Create a class

public class Earth

{

    //Declare the variable

    private double mag;

    //Define the constructor

    public Earth(double magnit)

    {

        //Assign the magnitude value

        mag = magnit;

    }

    //Define a method "getDesc()"

    public String getDesc()

    {

        //Declare the variable for magnitude description

        String desc;

/*Check whether the value of magnitude is greater than or equal to "8.0" */

        if (mag >= 8.0)

        {

            //Assign the description

            desc = "Most structures fall";

        }

/*Check whether the value of magnitude is greater than or equal to "7.0" */

        else if (mag >= 7.0)

        {

            //Assign the description

            desc = "Many buildings destroyed";

        }

/*Check whether the value of magnitude is greater than or equal to "6.0" */

        else if (mag >= 6.0)

        {

            //Assign the description

desc = "Many buildings considerably damaged, some collapse";

        }

/*Check whether the value of magnitude is greater than or equal to "4.5" */

        else if (mag >= 4...