I need answers to three java problems

Problem 1:

Write a class  named  Car that has the following fields: • yearModel: The yearModel field is an int  that holds the car's year model. • make: The make field is a String  object  that holds the make of the car. • speed: The speed field is an int  that holds the car's current speed. In addition, the class  should have the following methods : • Constructor : The constructor  should accept the car's year model and make as arguments . These values  should be assigned  to the object 's yearModel and make fields. The constructor  should also assign  0 to the speed field. • Accessor: The appropriate accessor methods  should be implemented to access the values  stored  in the object 's yearModel, make, and speed fields. • accelerate: The accelerate method  should add 5 to the speed field when it is called. • brake: The brake method  should subtract 5 from the speed field each time it is called. Demonstrate the class  in a program  that contains a Car object , and then calls the accelerate method  five times. After each call to the accelerate method , get the current speed of the car and print it on a separate line. Then, call the brake method  five times, each time printing the current speed of the car on a separate line.

Problem 2:

Design a Payroll class  with the following fields: • name : a String  containing the employee's name  • idNumber: an int  representing the employee's ID number • rate: a double  containing the employee's hourly pay rate • hours: an int  representing the number of hours this employee has worked The class  should also have the following methods : • Constructor : takes the employee's name  and ID number as arguments  • Accessors: allow access to all of the fields of the Payroll class  • Mutators: let the user assign  values  to the fields of the Payroll class  • grossPay: returns the employee's gross pay, which is calculated as the number of hours worked times the hourly pay rate. Write another program  that demonstrates the class  by creating a Payroll object , then asking the user to enter the data for an employee in the order: name , ID number, rate, hours. The program  should then print out a statement  in the following format (for example, if you had an employee named  Chris Jacobsen with ID number 11111, who works for 5 hours at $10/hr): Chris Jacobsen, employee number 11111, made $50.00 in gross pay. Using text forming so that the gross pay is rounded to two decimal places.

Problem 3:

Write a Temperature class  that will hold a temperature in Fahrenheit and provide methods  to get the temperature in Fahrenheit, Celsius, and Kelvin. The class  should have the following field: • ftemp: a double  that holds a Fahrenheit temperature. The class  should have the following methods : • Constructor : The constructor  accepts a Fahrenheit temperature (as a double ) and stores  it in the ftemp field. • setFahrenheit: The set Fahrenheit method  accepts a Fahrenheit temperature (as a double ) and stores  it in the ftemp field. • getFahrenheit: Returns the value  of the ftemp field as a Fahrenheit temperature (no conversion  required) • getCelsius: Returns the value  of the ftemp field converted to Celsius. Use the following formula to convert to Celsius: Celsius = (5/9) * (Fahrenheit - 32) • getKelvin: Returns the value  of the ftemp field converted to Kelvin. Use the following formula to convert to Kelvin: Kelvin = ((5/9) * (Fahrenheit - 32)) + 273 Demonstrate the Temperature class  by writing a separate program  that asks the user for a Fahrenheit temperature. The program  should create an instance of the Temperature class , with the value  entered by the user passed to the constructor . The program  should then call the object 's methods  to display the temperature in the following format (for example, if the temperature in Fahrenheit was -40): The temperature in Fahrenheit is -40.0 The temperature in Celsius is -40.0 The temperature in Kelvin is 233.0