Java 同步块：锁定块直到 object 实例化

Question

我想同步我的代码块并仅在实例化 object 连接时释放它，我该怎么做？

public void myMethod() {

 Connection connection = null;

 synchronized (connection) {
 // Set configuration, block of code to synchronize
 }

 connection = getConnection(configuration); // Should be released after this
}

Answer 1

使用一个单独的东西作为你的显示器：

private final Object myMethodLock = new Object();

public void myMethod() {

 Connection connection = null;

 synchronized (myMethodLock) {
   connection = getConnection(configuration);
 }

 // myMethodLock has been released.
}