notify

问题 synchronized (Foo.class) { while (someCondition) { try { Foo.class.wait(); } catch (InterruptedException e) { e.printStackTrace(); } } } It seems that this thread both wakes when some other thread call interrupt() or notify() on this thread. Are there any differences between the two? --EDIT-- I know one is for notifying an object, the other interrupts a thread. But both of these lead to the same consequence, that is, this thread is waken up, so what I want to ask is how these 2 situations'

问题 Hello, I am trying to learn Twilio API. When I [send SMS through php][1] script.. twilio returns a response object with status = 'queued'. Now I want to get notified when the status changes to 'sent'. Is this possible with Twilio??? and if yes then could any body advise me on how to implement his. And how to add 'StatusCallback' url $sms = $client->account->sms_messages->create( // the number we are sending from, must be a valid Twilio number "000-000-0000", // the number we are sending to -

问题 I am working on the application (C# 2.0). I have implemented single instance in it. Everything is fine. If i run the application again, it shows messagebox saying "instance is already running". Actually i don't want to show the message through messagebox. I want to show this message using Balloon tip of already running instance (it has notify icon in system tray). How can i achieve this? Thanks in advance. 回答1: You need a form of interprocess communication, to signal to the other instance

问题 I have an android application that is connected to the computer via USB cable. I use a TCPServer Class to send messages and listen. For example: When I send a message like: request:x I get the response: response:x:55 I need to make changes on my activity according to the response I get. At the moment I temporarily solved the problem by passing activity and activity class object to the TCPServer's constructor public TCPServer(int portNum, Activity activity, IntroActivity ia) { super(); port =

问题 thread.join() will call thread.wait() , but who and when notifies (either with thread.notify() or notifyAll() ) the thread.wait() ? As we know, thread join will wait for the thread to be completed, but who calls notify on it? 回答1: Edit: Oh, you are talking about inside of the Thread object itself. Inside of join() we do see a wait() . Something like: while (isAlive()) { wait(0); } The notify() for this is handled by the Thread subsystem. When the run() method finishes, the notify() is called

问题 I need to show a notification from a cron job. My crontab is something like: $ crontab -l # m h dom mon dow command * * * * * Display=:0.0 /usr/bin/notify-send Hey "How are you" I checked /var/log/syslog and the command is actually executed every minute but it doesn't pop up the notification. Can anybody help me understand why? 回答1: I found the answer: $ crontab -l # m h dom mon dow command * * * * * export DISPLAY=:0.0 && export XAUTHORITY=/home/ravi/.Xauthority && sudo -u ravi /usr/bin

问题 I am trying to get a notification when pluging in a USB device, for this I use a udev rule to track the moment it is pluged and from there I launch a script. The idea on the script was to use what it is explained in the link. but when trying this: pids=`pgrep -u $user gnome-panel` I found that gnome-panel is not there. Googled this work arround and I found quite few people complaining that this work arround is no longer working. So I did a bit of research on the subject and came up with this

问题 I am having problem dealing with synchronization java threads, applying wait and notify.. I want to figure out how could I implement these in a program where I can print out the answer alternately.. for example person1 will count numbers 1-5 as well as person2, the output should be like this. person1 count 1 person2 count 1 person1 count 2 person2 count 2 person1 count 3 person2 count 3 person1 count 4 person2 count 4 person1 count 5 person2 count 5 Thanks guys. 回答1: You could do this easily

问题 all. I have a question for Java wait-notify mechanism. The answer is is there a guaranty that the threads will be executed in this order - from last to the first etc. the result always will be 100, 99, ... , 1 ? This is the snippet of code: public class Main { static int counter = 0; static Object o = new Object(); public static void main(String[] args){ for(int i = 0; i < 100; ++i){ new Thread(() -> { synchronized (o) { try { int c = ++counter; o.wait(); System.out.println("" + c); Thread

问题 I'm implementing the following Java interface to allow threads to be paused and resumed. I've a working version that uses wait()/notifyAll(), but I wondered if there was an easier way to do it (say, using some nifty widget in java.util.concurrent)? public interface Suspender { /** * Go into pause mode: any threads which subsequently call maybePause() * will block. Calling pause() if already in pause mode has no effect. */ void pause(); /** * Leave pause mode: any threads which call maybePause