Java tutorial
/* * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of Oracle or the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package integratedprogressdemo; import javax.swing.JTable; import javax.swing.JPanel; import javax.swing.JLabel; import javax.swing.JProgressBar; import javax.swing.JScrollPane; import java.awt.Dimension; import java.awt.Color; import java.awt.Font; import java.awt.BorderLayout; import javax.swing.BorderFactory; /** * * @author skannan */ public class WeatherData extends JPanel { private JPanel progressPanel = null; private JProgressBar progressBar = null; private static WeatherData weatherDataPanel = null; // weather data panel is a singleton public static WeatherData getWeatherDataPanel(boolean displayProgress) { if (weatherDataPanel == null) { weatherDataPanel = new WeatherData(displayProgress); } else { if (!displayProgress) { weatherDataPanel.removeProgressPanel(); } } return weatherDataPanel; } private WeatherData(boolean displayProgress) { setBackground(Color.WHITE); setLayout(new BorderLayout()); JLabel lbl = new JLabel("World-Wide Weather Data"); lbl.setFont(new Font("Serif", Font.PLAIN, 18)); add(lbl, BorderLayout.PAGE_START); lbl = new JLabel("Weather information from over 50 cities"); add(lbl, BorderLayout.LINE_START); if (displayProgress) { progressPanel = new JPanel(); progressPanel.setBackground(Color.WHITE); progressPanel.setLayout(new BorderLayout(20, 20)); String lblText = "<html>Stuck in the mud? Make progress with...<br /><font color=red><em>JDK Documentation</em></font><br/></html>"; lbl = new JLabel(lblText); progressPanel.add(lbl, BorderLayout.NORTH); progressBar = new JProgressBar(0, 100); progressBar.setValue(0); progressBar.setStringPainted(true); progressPanel.add(progressBar, BorderLayout.SOUTH); add(progressPanel, BorderLayout.LINE_END); } String[] columnNames = { "City", "Temperature" }; JTable table = new JTable(getData(), columnNames); table.setPreferredScrollableViewportSize(new Dimension(500, 70)); table.setFillsViewportHeight(true); //Create the scroll pane and add the table to it. JScrollPane scrollPane = new JScrollPane(table); scrollPane.setBackground(Color.WHITE); //Add the scroll pane to this panel. add(scrollPane, BorderLayout.PAGE_END); } private void removeProgressPanel() { if (progressPanel != null) { remove(progressPanel); progressPanel = null; progressBar = null; } } public void updateProgress(int overallPercent) { if (progressBar != null) { progressBar.setValue(overallPercent); } } private Object[][] getData() { // Get current classloader Object[][] data = { { "London", "55" }, { "New York", "70" }, { "Los Angeles", "80" }, { "New Delhi", "95" }, { "Tokyo", "60" }, { "Seoul", "55" }, { "Shanghai", "60" }, { "Milan", "64" }, { "Paris", "66" }, { "Buenos Aires", "70" }, { "Washington DC", "80" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Some City", "68" }, { "Some City", "99" }, { "Some City", "60" }, { "Some City", "63" }, { "Some City", "65" }, { "Some City", "64" }, { "Ottowa", "44" }, { "Sacramento", "100" }, }; return data; } }