Use Java to wirte the program

The program will keep prompting user to input a valid integer (0-100) until a -1 is input, e.g, Please input an integer 0-100 (-1 to stop): 2) If an invalid integer is given, the program will print an error message XXX is not a valid input. where XXX is the given integer, and prompt again. 3) After a -1 is input, if no valid number was ever input, i.e., the first input is -1, the program prints Good bye! and exits. Otherwise, the program prints the minimum, maximum, and the average of the integers, and exits.

Please exppain the codes step by step.