Employee Payroll 

TCS is a full time courier and cargo dispatch agency for corporate companies around the world. It mainly deals with delivering and tracking the package delivered. TCS has its annual budget session during the end of year. The company has more than 30,000 fulltime employee, 5, 00,000 customers per month and an average of 3 million packages a day. 
The manner in which the company structures pay scales is different for permanent and temporary staff. Some of the criteria which the company uses to decide the pay are as follows: 

1. Number of packages being delivered: permanent employees get 50$ for every package their travel. Similarly temporary employees get 30$ for every delivered package. 

2. The distance they travel: permanent employees get a daily allowance of 75$ for their travel. Similarly temporary employees get a daily allowance of 65$ for their travel. 

3. Shifts: people who work for the night shift get an additional pay of 10% over and above their regular pay. Depending on all these factors, the basic pay structure is decided. Now the company wants to reward the employees with bonuses bases on their grades as follows (assumes that grade is provided as input). 

4. Grade A1: 5% of basic pay

5. Grade A2: 10% of basic pay

6. Grade A3: 15% of basic pay

7. With all the information provided use all possible type of statements and expressions and design a java Application to help the management to calculate the net pay basic added to bonus for employees.