The following changes were made to enhance code readability and optimize logic across several Java classes:

• Replaced redundant parentheses and adjusted instance checking syntax for more concise expression.
• Introduced switch-case structures to replace multiple if-else conditions where appropriate.
• Simplified method invocations and variable assignments.
• Removed unnecessary Pattern usage and redundant variables.
• Improved the handling of default cases in switch statements.
• Minor updates to variable assignments for consistency and clarity.

These changes aim to maintain functionality while improving maintainability.