This curriculum is designed for intermediate learners of Java programming, gradually introducing concepts across 6 lessons.
It includes practice problems, examples, and homework to reinforce learning.

The lessons cover:

1. Review of beginner Java concepts, arrays, array algorithms, and methods
2. String methods, charAt, substring, indexOf, and looping through strings
3. More methods, void methods, return methods, parameters, return types, and method overloading
4. ArrayLists, adding/removing/accessing items, and looping through ArrayLists
5. 2D arrays, rows/columns, nested loops, traversing 2D arrays, and grid problems
6. Classes, objects, fields, constructors, methods, and the this keyword

• Teacher-led instruction is required.
• The teacher will explain the concepts using the sample code provided in each lesson.
• After instruction, students complete problem sets for practice.
• The problems do not contain answers: students are expected to attempt solutions themselves.
• Teachers may give hints but encourage independent problem-solving.

1. Open the repository in GitHub Codespaces by clicking the green Code button on the repo page and selecting Codespaces → New codespace.
2. When prompted, select 2-core machine for better performance.
3. This will launch a ready-to-use online development environment in your browser, with Java pre-installed.
4. Students can code directly in Codespaces without needing to install anything locally.

• To run a file, open the terminal and use javac path/to/FileName.java and then java -cp path/to FileName
• Example: javac lesson2/classwork/StringMethods.java then java -cp lesson2/classwork StringMethods
• You can also use the Run Code button from the Code Runner extension.

1. When you make changes, they are saved automatically in the Codespaces environment, but not yet in GitHub.
2. In the left sidebar, click the Source Control icon (or press Ctrl+Shift+G / Cmd+Shift+G).
3. Write a short description of what you changed in the message box (e.g., "Completed Lesson 2 Homework").
4. Click the ✓ Commit button.
5. Click Sync Changes (🔄) to upload your work to GitHub so your teacher can see it.

• Always shut down your Codespace after use to save resources:
  • Go to the Codespaces tab on GitHub (under your profile).
  • Find the running Codespace.
  • Click the ⋯ menu and select Stop Codespace.

• Inside Codespaces, open the Command Palette (Ctrl+Shift+P or Cmd+Shift+P on Mac).
• Search for Live Share: Start Collaboration Session.
• Copy the generated Live Share link and send it to your teacher so they can join your coding session in real-time.

• Each lesson has:
  • Sample code
  • Practice problems
  • Homework problems
• Each lesson includes practice problems and homework problems.