OmanOil Company needs to create a bill calculation information. In this process, the operations initiated by the company are customer information, amount calculation of gas consumption, and display of customer details. Write a Java program to create an object class "Gasbill and do the following operations. Member variables: customerno, customername, current_meter_reading, previous_meter_reading, Units Consumed, Billamount. Member Methods: a. Read() To read the values such as customerno, customername, (1 Mark) current_meter_reading, and previous_meter_reading. Get the input through the keyboard. b. Bill_Calc() To calculate Units Consumed and Billamount using the (2 Marks) formula and condition which are given below. Formula: Units Consumed current_meter_reading previous_meter_reading Condition : Units Consumed Billamount >0 and 200 and 501 and