An important concept in synchronized Java thread synchronization.
java is synchronized keyword, a synchronization lock, the object of its role are the following:
① action of the object. The code block in the code block is called a synchronization code blocks, scope braces {..} is enclosed code, the role of this object is to call the code block
The method ②
③ static method
④ class
Case column 1, the synchronization code block
```
public class MySynchornized implements Runnable {
private static int count;
public MySynchornized() {
count = 0;
}
@Override
public void run() {
// 同步代码块
synchronized (this) {
for (int i = 0; i < 5; i++) {
try {
System.out.println(Thread.currentThread().getName() + ":" + (count++));
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
public int getCount() {
return count;
}
}
transfer
Test Results:
Unlocked the case:
Lock:
