java - 如果线程之间没有 Java 中的公共(public)数据，如何指定线程之间的通知

Question

我有一个 Java 线程，它启动 HttpService。

ProcessBuilder pb = new ProceeBuilder(command);
Process process = pb.start();
process.waitFor();

我有另一个线程来检查服务是否已启动。

while (result != 0) {
  ServerSocket socket = new ServerSocker(port);
  socket.close();
  result = 0
  catch (BindException be) {
    result = 1;
  }
}

现在我需要以某种方式获取有关服务是否启动失败或成功启动的信息。我需要将其返回到启动这两个线程的主类才能继续。类似的东西

while (!started || !failed) {
     wait for getting information from the threads.
}

你有什么建议？ 谢谢。

Answer 1

使用传递给两个线程的回调怎么样？

(省略 try catch )

public class MyCallback {
  private Boolean processSuccess;
  private Boolean serviceSuccess;
  public synchronized void notifyProcessStart(boolean success) {
    this.processSuccess = success;
    this.notifyAll();
  }
  public synchronized void notifyServiceCheck(boolean success) {
    this.serviceSuccess = success;
    this.notifyAll();
  }
  public synchronized void waitForResult() {
    while(processSuccess == null || serviceSuccess == null) {
      this.wait();
    }
    // ... do something good
  }
}