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Fix 27 bugs in DebugNightmare.java#1

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aarush-2002 wants to merge 1 commit intomainfrom
fix-debug-nightmare-6404785524138002761
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Fix 27 bugs in DebugNightmare.java#1
aarush-2002 wants to merge 1 commit intomainfrom
fix-debug-nightmare-6404785524138002761

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@aarush-2002
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Fixed a wide range of common Java pitfalls and bugs in DebugNightmare.java. The changes improve thread safety, memory management, and logic correctness.


PR created automatically by Jules for task 6404785524138002761 started by @aarush-2002

This commit addresses 27 bugs in DebugNightmare.java, covering:
- Race conditions and synchronization issues using AtomicInteger, CopyOnWriteArrayList, and proper locking.
- Concurrent modification and thread-safety in maps and lists.
- Infinite loops due to floating point precision and integer overflow.
- Incorrect object and array comparisons.
- Memory leaks by clearing static caches.
- Deadlocks by enforcing a consistent locking order.
- Dangerous reflection and deprecated finalizers.

The code was verified with OpenJDK 21 and binary artifacts were excluded.

Co-authored-by: aarush-2002 <226639199+aarush-2002@users.noreply.github.com>
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