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Asked: 2026-05-23T17:40:43+00:00

I use visualVM connect a multi thread Java application, thread has 4 status, namely

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I use visualVM connect a multi thread Java application, thread has 4 status, namely running, sleeping, wait, Monitor. What does this Monitoring status mean? What’s the difference between wait and Monitor?

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  1. Editorial Team

    These states are the same as mentioned in the Thread.State enum. “Wait” means, as the documentation says:

    A thread is in the waiting state due to calling one of the following methods:

    • Object.wait with no timeout
    • Thread.join with no timeout
    • LockSupport.park

    “Monitor” is the BLOCKED state, in which the thread is waiting to obtain a lock on an object (because it’s trying to enter a synchronized block or method while another thread already holds the associated lock).

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