By java Programming i want to that that excercises

1. Write Java program that counts the number of times a particular character, such as e, appears in a file. The character can be specified at the command line entered through the keyboard. You can use xanadu.txt as the input file.

2. Write a Java program to find the longest word in a text file.

3. Write a java program that :
   1. Read the employee data (first name, last name, worked hours, pay rate)

from a file Employee.txt

Employee.txt

Ali Mohammad 13 10.0 Ahmad Naser 10 5.0

2. Calculate the salary for each employee

Salary = worked hours * pay rate

3. Send the output to a file salary.txt

salary.txt

Ali Mohammad 130 K.D. Ahmad Naser 50.0 K.D.