Java FAQ: Top Questions

66. What is the Thread Dump and how is it analyzed?

A thread dump is a snapshot of all threads in a JVM, showing their states, stack traces, and locks, used to diagnose issues like deadlocks or performance bottlenecks.

Generation: Via jstack , kill -3 , or tools like VisualVM.
Content: Thread states (RUNNABLE, BLOCKED, WAITING), monitors, stack traces.
Analysis: Look for deadlocks, long-running threads, or blocked states.
Use Case: Debugging hung applications or thread contention.

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