java program

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Exercise #1: Write a program which calculates and prints the monthly paycheck for an employee. The net salary is calculated after the following deductions and additions: Deducations: Additions: Retirement Plan: 5% Housing Allowence: 20% Health Insurance: 750 AED Transportation Allowence: 200 Your program should prompt the user to input the gross amount. The output should be like this: Gross Amount: 10000.00 Retirement Plan: Health Insurance: Housing Allowence: Transportation Allowence: - 500.00 AED - 750.00 AED + 2000.00 AED + 200.00 AED *** Net Salary: 10950.00 AED Exercise#3: Write a program that reads a string from the user with the length of 5. The Program should print the String to the console but in reverse order. For example, if the String read is "Hello" from the user then your program will print olleH. (Hint: use charAt() method) Exercise#4: Read a name from the user ( assume the user enters first and last names and are separated by a space) then create a new string and combine: last name first followed by a comma and a space, followed by the first name and then print the new string. For example, if the input is "Ali Alhammadi", the output is "Alhammadi, Ali