Detailed explanation of communication examples between threads in Java multithreading

Communication between threads in Java multithreading

1、 Use the while mode to realize the communication between threads

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Understanding: thread thread2 constantly detects whether this condition (list. Size() = = 5) is true through the while statement, so as to realize the communication between threads. But this method will waste CPU resources.

2、 The wait notfiy method realizes the communication between threads in multithreading

To realize thread communication in this way, note that wait and notify must be used together with the synchronized keyword. The wait method releases the lock, and the notify method does not release the lock. In this example, thread2 must be executed first.

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3、 The countdownlatch class is used to realize real-time communication between threads in multithreading

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4、 Simulate a queue using multithreading

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