Implement a complete calculator system in JAVA and GUI. implement add, sub, multiply, divide in your system. You have to add overloaded method for float and integer arithmetic. (assignment 3 question 1) calculator should also calculate square, power, square root functions as well. you must implement the GUI and styling in calculator.

What is the difference between ref and out parameters in C#? a. Both are used interchangeably. b. ref parameters must be initialized before passing them to a method, while out parameters do not need to be initialized. c. out parameters must be initialized before passing them to a method, while ref parameters do not need to be initialized. d. There is no difference between them.

2- Design a class for an airline ticket. Some of the field of an airline ticket are start, destination, date of travel, class, price of ticket, number of people traveling, and name of the primary person. Think about the methods appropriate for the class. Add one method call reserve, which will take details of passengers, start date, starting point, destination and other related attributes and returns flight details. (Python code)

Values, not references, are accepted in Java's method arguments. What does this imply, specifically?