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changed thread for ScheduledExecutorService #2297

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Merged
maibin merged 1 commit into from
Jul 20, 2017
Merged

changed thread for ScheduledExecutorService #2297

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29 changes: 8 additions & 21 deletions libraries/src/main/java/com/baeldung/vaadin/VaadinUI.java
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,9 @@
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

import javax.servlet.annotation.WebServlet;

Expand Down Expand Up @@ -216,7 +219,11 @@ protected void init(VaadinRequest vaadinRequest) {
timeLayout.addComponent(currentTime);
serverPushPanel.setContent(timeLayout);
serverPushPanel.setSizeUndefined();
new ServerPushThread().start();
ScheduledExecutorService scheduleExecutor = Executors.newScheduledThreadPool(1);
Runnable task = () -> {
currentTime.setValue("Current Time : " + Instant.now());
};
scheduleExecutor.scheduleWithFixedDelay(task, 0, 1, TimeUnit.SECONDS);

FormLayout dataBindingLayout = new FormLayout();
dataBindingLayout.setSpacing(true);
Expand Down Expand Up @@ -271,24 +278,4 @@ protected void init(VaadinRequest vaadinRequest) {
@VaadinServletConfiguration(ui = VaadinUI.class, productionMode = false)
public static class MyUIServlet extends VaadinServlet {
}

class ServerPushThread extends Thread {
@Override
public void run() {
try {
while (true) {
Thread.sleep(1000);
access(new Runnable() {
@Override
public void run() {
currentTime.setValue("Current Time : " + Instant.now());
}
});
}

} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}