The electric company charges according to the following rate schedule:

9 cents per kilowatt-hour (kwh) for the first 300 kwh

8 cents per kwh for the next 300 kwh (up to 600 kwh)

6 cents per kwh for the next 400 kwh (up to 1000 kwh)

5 cents per kwh for all electricity used over 1000 kwh

Writ a Java program that would repeatedly read in a customer number (an integer) and the usage for that customer in kwh (an integer). The program should include a method to compute the total charge for each customer. Use the following template for the method:

// takes kwh and calculates the total charge for that customer. 

public static double findCharge(int kwh){
	// put your code here
}

The program should terminate when the user enters a sentinel value of -999 for the customer number. The program should print a three-column chart listing the customer number, the kilowatt-hours used, and the total charge for each customer. The program should also compute and print the number of customers, the total kilowatt-hours used, and the total charges. Use a JTextArea component within a JOptionPane dialog box to display the output. You should name the source code file Hw3.java.

Note that you should not use arrays for this assignment.

 

In Java programing language using JOption

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