com.dungnv.utils.FWUtils.java Source code

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Here is the source code for com.dungnv.utils.FWUtils.java

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/*
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package com.dungnv.utils;

import com.vaadin.ui.Window;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author ODIN NGUYEN
 */
public class FWUtils {
    public static void reloadWindow(Window subWindow) {

        subWindow.addWindowModeChangeListener((Window.WindowModeChangeEvent event) -> {
            try {
                Thread.sleep(500L);
            } catch (InterruptedException ex) {
                Logger.getLogger(FWUtils.class.getName()).log(Level.SEVERE, null, ex);
            }
        });
    }

    public static boolean urlExists(String URLName) {
        try {
            HttpURLConnection.setFollowRedirects(false);
            // note : you may also need
            //        HttpURLConnection.setInstanceFollowRedirects(false)
            HttpURLConnection con = (HttpURLConnection) new URL(URLName).openConnection();
            con.setRequestMethod("HEAD");
            //      return (con.getResponseCode() == HttpURLConnection.HTTP_OK);
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
}