CRA - 301 - 2

• /LoopTrap.java
• /DivideFail.java
• /IndexBreaker.java
• /NullCrash.java

Summary by Bito

This pull request adds four new Java classes, each designed to demonstrate a specific type of runtime error commonly encountered in Java programming, providing educational examples for common pitfalls in Java development.

Detailed Changes

• Adds CastCrash.java demonstrating ClassCastException when casting incompatible types in main method.
• Introduces SimpleCalculator.java with basic arithmetic operations including division with zero check.
• Creates StringCompareBug.java showing incorrect string comparison using == operator instead of equals.
• Includes UninitializedVar.java illustrating compilation error from uninitialized local variable usage.