Update 3 files
- /null_pointer_1.java
- /null_pointer_2.java
- /null_pointer_3.java
Summary by Bito
This PR updates three Java files in the InventoryManagementSystem, introducing methods that handle collections without proper initialization. The changes highlight potential null pointer exceptions across various operations including direct iteration, nested loops, and stream processing, aiming to improve null safety throughout the codebase.Edited by prajakta bendre