Java Code Review

This is a thorough Java code review checklist that catches the stuff that actually breaks production: null pointer exceptions, swallowed exceptions, concurrent modification errors, and resource leaks. It walks through eight categories from null safety to performance gotchas, showing bad versus good patterns with real code examples. The format is clean, listing findings by severity from critical to minor, and it reminds you to note good practices too. It's opinionated in the right ways, like preferring Optional over null returns and pushing back on overusing streams. If you're doing PR reviews or need a second set of eyes before merge, this gives you a systematic way to catch issues without relying purely on memory.