thread-sleep

问题 I'm attempting to implement a game loop frame limiter in a game engine written in C#. I was told Thread.Sleep requires a few milliseconds to even execute Thread.Sleep(0) , and would miss the target milliseconds a bit. It is thus not precise enough for what I need, because the target frame rate can require the engine to sit and wait for 1 millisecond. I'm not sure I should be using Thread.SpinWait in this, as there can also be situations where the engine needs to wait for 10 milliseconds, and

问题 I want to create a small application.In my application I have jLabel1 and Jbutton1 . I want to animate jLabel1 from one side to another side using jButton click. I don't know how to call it in the jButton1ActionPerformed to create the animation of jLabel1 . I have done a paint application code which is giving as following. Here is my code: public void paint(Graphics g) { super.paint(g); Graphics2D g2=(Graphics2D)g; g2.drawString("ancd", x, y); try { Thread.sleep(10000); } catch (Exception e)

问题 I have a simple JTable, displaying many data (~1000 rows) with a complex custom cell renderer. It takes a little time to render this cells. During this time the entire GUI seems to be frozen. This can be seen, because a progress indicator is shown to the user. During data generation, it works normally. But if the JTable is triggered trough fireTableDataChanged to update its view, the progress indicator gets frozen. In the following little example, you should press on the button and see the

问题 I am trying to make a tiny program that has 3 buttons, all of them of white color. Pressing the first button (that has the text "Go!") will cause the second button to become orange for 3 seconds and then, after that time, it will become white again AND the third button will become permanently green. However, in my following code, I have a problem achieving this: When hitting the button "Go!", it causes my program to somewhat freeze for 3 seconds and then the third button becomes green. Can

问题 I'm trying to simulate a left click in a different program using awt.robot, with the following code: int mask = InputEvent.BUTTON1_DOWN_MASK; bot.mouseMove(x, y); bot.mousePress(mask); bot.mouseRelease(mask); While this is moving the mouse to the correct part of the screen, the other program doesn't seem to be receiving the click. What am I doing wrong? In certain other programs, this same method produces the click, but in one program, it has no effect. I have tried Thread.sleep() to wait 30

问题 I have a thread, and on run() I call sleep() . What will happen if I interrupt this thread? MyThread extends Thread{ public void run(){ try{ sleep(1000000); } catch(InterruptedException e) {//} } } I want to clarify the following: If the thread is not yet started, calling interrupt() would do nothing, right? If the thread is started, and is now sleeping, calling interrupt() while sleeping will throw an InterruptedException ; and thus, goes to catch() and then ends the thread, right? 回答1: 1)

问题 I've been doing a tutorial on 2D graphics in Java 8, when NetBeans gave me a hint that doing Thread.Sleep would affect performance. However, though I've been able to find several better ways, I haven't been able to find a way to include them without messing you the code. package platformer; import java.awt.*; import javax.swing.*; import java.util.Scanner; @SuppressWarnings("serial") public class Platformer extends JPanel { int x = 0;//Sets the starting coords. of the ball int y = 0; private

问题 I am using VisualVM to monitor my JBoss instance. I have attached a screenshot of it aswell. The problem is after I restart the JBoss instance, the CPU on the OS starts to go high. Load can go as high as 40 and JAVA process in top command shows upto 300% usage. This then goes on to slow down the application at the front end. VisualVM shows that CPU is high and that thread count is increasing also. How can I further go to the root cause of this ? Visual VM output - General 回答1: When it comes

问题 Can someone help me understand how the Thread.sleep() function is implemented? A thread resumes/wakes up when the specified time elapses or when some other thread interrupts. I'm interested in understanding the design pattern behind the working of this. Sleep is said to have no effect on the CPU consumption. Is the current thread added to a list of listeners? When will the check for interrupt flag occur? Does the scheduler keep checking for the interrupt status of every thread that is

问题 Here is a console program want 10 threads start in batch, wait 5 seconds, and stop in batch. static void Main(string[] args) { System.Threading.Tasks.Parallel.For(0, 10, (index) => { Action<int> act = (i) => { Console.Write("start {0} ", i); Thread.Sleep(5000); }; act.BeginInvoke(index, OnTaskComplete, index); }); Console.ReadKey(); } static void OnTaskComplete(IAsyncResult res) { Console.Write("finish {0} ", res.AsyncState); } but the result is not what I expected, 10 threads start one-by