Java threads use --ReentrantLock

Original: Reprinted indicate the original address https://www.cnblogs.com/fanerwei222/p/11871593.html

--ReentrantLock use Java threads, mutex:

ReentrantLock reentrantLock = new ReentrantLock();
try {
    reentrantLock.lock();
} finally {
    reentrantLock.unlock();
}