Struggling to work with files and handle errors without crashing the program? You are not alone... This Nexus Bundle will help you learn to store data and handle errors reliably. What's Inside ● Module 1: Working with Files — reading and writing text. ● Module 2: JSON — encoding and decoding data. ● Module 3: Exceptions and try/catch — error handling. ● Module 4: Custom Exceptions and Defensive Programming. ● Module 5: Practical Programs — saving contacts and safe number reading. Who is this for? ✅ Perfect if you want to build programs that work with data. ❌ Not for you if you have not yet mastered functions. What You'll Learn ● Read and write files ● Work with JSON structures ● Catch and handle errors ● Write reliable code with checks How these materials work: The materials are created for self-paced study at your own rhythm.