Comprehensive Mode with Large PR

Summary by Bito

• Adds a new Java file that serves as a comprehensive demonstration of typical legacy application bugs with multiple methods designed to trigger exceptions, simulate resource leaks, and exhibit flawed control structures.
• Removes an unnecessary return statement from the finally block to correct control flow and improve error management.
• Enhances the system's capability to handle exceptions reliably and supports effective simulation of legacy bugs.
• Provides a controlled environment for replicating error scenarios and facilitates deeper analysis of bug behavior.
• Overall summary: Introduces a new Java file with multiple error simulation methods while improving error handling and control flow, enhancing the system's debugging capabilities and stability.