Lock examples

Author: winterbe

src/com/winterbe/java8/samples/concurrent/Lock2.java

@@ -2,6 +2,7 @@
 
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 import java.util.concurrent.locks.ReentrantLock;
 
 /**
@@ -18,11 +19,23 @@ public static void main(String[] args) {
  lock.lock();
  try {
  System.out.println(lock.isLocked());
- } finally {
+ TimeUnit.SECONDS.sleep(1);
+ }
+ catch (InterruptedException e) {
+ throw new IllegalStateException(e);
+ }
+ finally {
  lock.unlock();
  }
  });
 
+ executor.submit(() -> {
+ System.out.println("Locked: " + lock.isLocked());
+ System.out.println("Held by me: " + lock.isHeldByCurrentThread());
+ boolean locked = lock.tryLock();
+ System.out.println("Lock acquired: " + locked);
+ });
+
  ConcurrentUtils.stop(executor);
  }