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1 lock()：獲取鎖，如果鎖被暫用則一直等待 
2 unlock():釋放鎖 
3 tryLock(): 注意返回類(lèi)型是boolean，如果獲取鎖的時(shí)候鎖被占用就返回false，否則返回true
4 tryLock(long time, TimeUnit unit)：比起tryLock()就是給了一個(gè)時(shí)間期限，保證等待參數時(shí)間 
5 lockInterruptibly()：用該鎖的獲得方式，如果線(xiàn)程在獲取鎖的階段進(jìn)入了等待，那么可以中斷此線(xiàn)程，先去做別的事 　　通過(guò) 以上的解釋?zhuān)笾驴梢越忉屧谏蟼€(gè)部分中“鎖類(lèi)型(lockInterruptibly())”，“鎖狀態(tài)(tryLock())”等問(wèn)題，還有就是前面子所獲取的過(guò)程我所寫(xiě)的“大致就是可以嘗試獲得鎖，線(xiàn)程可以不會(huì )一直等待”用了“可以”的原因。

 1 public class LockTest {
 2     private Lock lock = new ReentrantLock();
 3 
 4     private void method(Thread thread) {
 5         lock.lock();
 6         try {
 7             System.out.println(thread.getName() + " has gotten the lock!");
 8         } catch (Exception e) {
 9             e.printStackTrace();
10         } finally {
11             System.out.println(thread.getName() + " has unlocked the lock!");
12             lock.unlock();
13         }
14     }
15 
16     public static void main(String[] args) {
17         final LockTest test = new LockTest();
18 
19         Thread t1 = new Thread(new Runnable() {
20             @Override
21             public void run() {
22                 test.method(Thread.currentThread());
23             }
24         }, "t1");
25         Thread t2 = new Thread(new Runnable() {
26             @Override
27             public void run() {
28                 test.method(Thread.currentThread());
29             }
30         }, "t2");
31         t1.start();
32         t2.start();
33     }
34 
35 }

t1 has gotten the lock!
t1 has unlocked the lock!
t2 has gotten the lock!
t2 has unlocked the lock!

 1 public class LockTest {
 2     private Lock lock = new ReentrantLock();
 3 
 4     private void method(Thread thread) {
 5     
 6         if (lock.tryLock()) {
 7             lock.lock();
 8             try {
 9                 System.out.println(thread.getName() + " has gotten the lock!");
10             } catch (Exception e) {
11                 e.printStackTrace();
12             } finally {
13                 System.out.println(thread.getName() + " has unlocked the lock!");
14                 lock.unlock();
15             }
16         } else {
17             System.out.println("I'm "+thread.getName()+". Someone has gotten the lock!");
18         }
19     }
20 
21     public static void main(String[] args) {
22         LockTest test = new LockTest();
23 
24         Thread t1 = new Thread(() -> test.method(Thread.currentThread()), "t1");
25         Thread t2 = new Thread(new Runnable() {
26             @Override
27             public void run() {
28                 test.method(Thread.currentThread());
29             }
30         }, "t2");
31         t1.start();
32         t2.start();
33     }
34 }

t1 has gotten the lock!
t1 has unlocked the lock!
I'm t2. Someone has gotten the lock!