# UnsupportedOperationException

- **ID:** `java/unsupportedoperationexception`
- **Domain:** java
- **Category:** runtime_error
- **Error Code:** `UnsupportedOperationException`
- **Verification:** official
- **Fix Rate:** 80%

## Root Cause

Operation not supported by the collection or object implementation.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 8+ | active | — | — |