This is my first practical Java project. It is a standard calculator that performs mathematical operations such as addition, difference, multiplication, and division of two integers. I created two classes Main and Calculator. The Main class describes the types of variables, the ability to enter them from the keyboard and output the result. The Calculator class has Methods getInt, getOperation, and Calculate, which describe options for entering variables from the keyboard, entering action with variables other than the expected one, and checking the switch case for entering an action sign with two variables of the int type.
This code offers to enter a phrase from the keyboard and indicate any letter, if such a letter occurs in the entered phrase, as a result, the number of times that this letter occurs will be displayed, the entered phrase from the keyboard will also be shown, its output is reversed, shows the number of N letters in her.
In this project, the user needs to enter five integers from the keyboard. The result displays the sum of these five numbers, as well as the maximum and minimum values among these five numbers.