wait | 易学教程

How make the script wait/sleep in a simple way in unity

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问题 How can put between the TextUI.text = .... a sleep function, for wait 3 seconds between each phrase? public Text GuessUI; public Text TextUI; [...truncated...] TextUI.text = \"Welcome to Number Wizard!\"; TextUI.text = (\"The highest number you can pick is \" + max); TextUI.text = (\"The lowest number you can pick is \" + min); I already tried various things but didn\'t worked, such this: TextUI.text = \"Welcome to Number Wizard!\"; yield WaitForSeconds (3); TextUI.text = (\"The highest

A simple scenario using wait() and notify() in java

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问题 Can I get a complete simple scenario i.e. tutorial that suggest how this should be used, specifically with a Queue? 回答1: The wait() and notify() methods are designed to provide a mechanism to allow a thread to block until a specific condition is met. For this I assume you're wanting to write a blocking queue implementation, where you have some fixed size backing-store of elements. The first thing you have to do is to identify the conditions that you want the methods to wait for. In this case,

IllegalMonitorStateException on wait() call

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问题 I am using multi-threading in java for my program. I have run thread successfully but when I am using Thread.wait() , it is throwing java.lang.IllegalMonitorStateException . How can I make a thread wait until it will be notified? 回答1: You need to be in a synchronized block in order for Object.wait() to work. Also, I recommend looking at the concurrency packages instead of the old school threading packages. They are safer and way easier to work with. Happy coding. EDIT I assumed you meant

wait until all threads finish their work in java

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问题 I\'m writing an application that has 5 threads that get some information from web simultaneously and fill 5 different fields in a buffer class. I need to validate buffer data and store it in a database when all threads finished their job. How can I do this (get alerted when all threads finished their work) ? 回答1: The approach I take is to use an ExecutorService to manage pools of threads. ExecutorService es = Executors.newCachedThreadPool(); for(int i=0;i<5;i++) es.execute(new Runnable() { /*

Why must wait() always be in synchronized block

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问题 We all know that in order to invoke Object.wait(), this call must be placed in synchronized block, otherwise an IllegalMonitorStateException is thrown. But what\'s the reason for making this restriction? I know that wait() releases the monitor, but why do we need to explicitly acquire the monitor by making particular block synchronized and then release the monitor by calling wait() ? What is the potential damage if it was possible to invoke wait() outside a synchronized block, retaining it\'s

Waiting for multiple SwingWorkers

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问题 Please consider the following code fragment: import java.awt.FlowLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.lang.reflect.InvocationTargetException; import javax.swing.*; public class TestApplet extends JApplet { @Override public void init() { try { SwingUtilities.invokeAndWait(new Runnable() { @Override public void run() { createGUI(); } }); } catch(InterruptedException | InvocationTargetException ex) { } } private void createGUI() {

How to wait for a number of threads to complete?

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What is a way to simply wait for all threaded process to finish? For example, let's say I have: public class DoSomethingInAThread implements Runnable{ public static void main(String[] args) { for (int n=0; n<1000; n++) { Thread t = new Thread(new DoSomethingInAThread()); t.start(); } // wait for all threads' run() methods to complete before continuing } public void run() { // do something here } } How do I alter this so the main() method pauses at the comment until all threads' run() methods exit? Thanks! You put all threads in an array, start them all, and then have a loop for(i = 0; i <