Develop a Java program for managing a list of courses stored in a file named "Courses.txt." The program should: Display all courses in the collection. Show courses introduced in the last three years (2022-2024). Calculate the average difficulty level of all courses. Generate a frequency distribution of course subjects. Store all courses from "Courses.txt" in a Java TreeMap. Output the unique instructors in the collection. Output the total number of entries in your TreeMap. Courses.txt: "Introduction to Java Programming", Computer Science, 2020, Intermediate, John Smith "Artificial Intelligence Basics", Computer Science, 2023, Advanced, Emily Rodriguez "Financial Accounting Fundamentals", Business, 2021, Beginner, David Johnson "Spanish Language Essentials", Linguistics, 2022, Intermediate, Maria Garcia "Environmental Science Fundamentals", Environmental Science, 2024, Beginner, Lisa Thompson "Digital Marketing Strategies", Marketing, 2023, Advanced, Michael Davis "Psychology 101", Psychology, 2022, Beginner, Susan White

Develop a Java program for managing a list of courses stored in a file named "Courses.txt." The program should: Display all courses in the collection. Show courses introduced in the last three years (2022-2024). Calculate the average difficulty level of all courses. Generate a frequency distribution of course subjects. Store all courses from "Courses.txt" in a Java TreeMap. Output the unique instructors in the collection. Output the total number of entries in your TreeMap. Courses.txt: "Introduction to Java Programming", Computer Science, 2020, Intermediate, John Smith "Artificial Intelligence Basics", Computer Science, 2023, Advanced, Emily Rodriguez "Financial Accounting Fundamentals", Business, 2021, Beginner, David Johnson "Spanish Language Essentials", Linguistics, 2022, Intermediate, Maria Garcia "Environmental Science Fundamentals", Environmental Science, 2024, Beginner, Lisa Thompson "Digital Marketing Strategies", Marketing, 2023, Advanced, Michael Davis "Psychology 101", Psychology, 2022, Beginner, Susan White

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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