Learn how to create, read, write, and delete files in Java. You’ll also explore how to work with folders and file paths to organize and manage data on your system.

Understanding Java File Operations

Pointing to your first note

Storing Recent Notes in Cache

Reading and writing files

Writing and Reading a Note

Handling Long Notes Efficiently

Managing directories and paths

Organizing notes into a folder

Verifying note locations

Introduction to Input/Output Operations

Work with lists and collections in Java as you learn to safely navigate and update data. You'll also explore modern techniques for filtering, transforming, and summarizing information with clarity and efficiency.

Introduction to Iterators

Displaying city names

Filtering large numbers

Modifying lists with ListIterator

Updating names in a contact list

Undo last action in a text editor

Introduction to Streams

Processing usernames for display

Filtering and counting emails for customer engagement

Data transformation with Streams

Convert and collect unique cities

Calculate total sales

Iterators and Streams

Practice building your own reusable methods while working with dates, times, and fixed sets of values. You’ll strengthen your problem-solving skills and learn to design cleaner, more organized code.

Introduction to Method Overriding and Recursion

Implementing method overriding

Recursive sum calculation

Introduction to Date and Time in Java

Formatting and parsing dates

Performing date calculation

Introduction to Enums

Navigating with Enum

Managing Web Responses with Enums

Custom methods - Bringing it all together

Calculate subscription expiration

Tracking application states

Congratulations!

Custom Methods, Date/Time and Enums

Take your Java programming skills to the next level by learning how to handle files, process data, and build custom methods. In this hands-on course, you’ll practice reading and writing text files, managing directories, and organizing data on your system. You’ll also explore efficient techniques for working with collections, including filtering and transforming data. Finally, you’ll strengthen your coding skills by creating reusable methods, working with dates and times, and using structured value types to write clean, maintainable Java code.

Build real-world Java skills by working hands-on with file management, data collections, and custom methods. This course helps you move beyond the basics to write cleaner, more efficient, and maintainable Java code.<br><br>

<h2>Work with Files and Directories in Java</h2>
Start by learning how to create, delete, and check files. You’ll read and write text using file-handling tools and manage directories and file paths to organize data effectively.<br><br>

<h2>Process and Transform Data with Java Collections</h2>
Next, explore how to handle collections of data in Java. You’ll safely loop through lists, modify elements, and use modern techniques to filter, transform, and summarize data using a functional approach.<br><br>

<h2>Write Reusable Java Code with Methods, Dates, and Enums</h2>
Finally, you’ll build custom methods to solve common problems, work with dates and times, and use enums to represent fixed sets of values. You'll apply recursion and clean coding practices to write flexible, reusable Java programs.<br><br>

<h2>What You’ll Achieve</h2>
By the end of the course, you’ll have the skills to manage files, process data collections, and create scalable, maintainable Java applications with confidence.

Data Types and Exceptions in Java

Advance your Java skills by learning to handle files, process data, and build clean, reusable code using real-world techniques.

Input/Output and Streams in Java

データエンジニア Javaで

Java開発者

Javaの基礎

Organizing notes into a folder

Input/Output and Streams in Java

演習の手順

実践的なインタラクティブ演習