In Java program. Write the method in given box for unit is less then 100 then unit rate 4.0 take and after 100-unit rate 5.50 and reaming unit rate…

In Java program. Write the method in given box for unit is less then 100 then unit rate 4.0 take and after 100-unit rate 5.50 and reaming unit rate 6.00.

• Bill rate 4.0 if unit<=100
• Bill rate 5.50 if (unit>100 && unit<=200)
• Bill rate 6.00 for remaining units.