Example usage for javax.swing JLabel JLabel

Introduction

In this page you can find the example usage for javax.swing JLabel JLabel.

Prototype

public JLabel(Icon image) 

Source Link

Document

Creates a JLabel instance with the specified image.

Usage

From source file:com.amazonaws.services.kinesis.leases.impl.LeaseCoordinatorExerciser.java

public static void main(String[] args) throws InterruptedException, DependencyException, InvalidStateException,
        ProvisionedThroughputException, IOException {

    int numCoordinators = 9;
    int numLeases = 73;
    int leaseDurationMillis = 10000;
    int epsilonMillis = 100;

    AWSCredentialsProvider creds = new DefaultAWSCredentialsProviderChain();
    AmazonDynamoDBClient ddb = new AmazonDynamoDBClient(creds);

    ILeaseManager<KinesisClientLease> leaseManager = new KinesisClientLeaseManager("nagl_ShardProgress", ddb);

    if (leaseManager.createLeaseTableIfNotExists(10L, 50L)) {
        LOG.info("Waiting for newly created lease table");
        if (!leaseManager.waitUntilLeaseTableExists(10, 300)) {
            LOG.error("Table was not created in time");
            return;
        }/*from www  .jav  a  2  s  . com*/
    }

    CWMetricsFactory metricsFactory = new CWMetricsFactory(creds, "testNamespace", 30 * 1000, 1000);
    final List<LeaseCoordinator<KinesisClientLease>> coordinators = new ArrayList<LeaseCoordinator<KinesisClientLease>>();
    for (int i = 0; i < numCoordinators; i++) {
        String workerIdentifier = "worker-" + Integer.toString(i);

        LeaseCoordinator<KinesisClientLease> coord = new LeaseCoordinator<KinesisClientLease>(leaseManager,
                workerIdentifier, leaseDurationMillis, epsilonMillis, metricsFactory);

        coordinators.add(coord);
    }

    leaseManager.deleteAll();

    for (int i = 0; i < numLeases; i++) {
        KinesisClientLease lease = new KinesisClientLease();
        lease.setLeaseKey(Integer.toString(i));
        lease.setCheckpoint(new ExtendedSequenceNumber("checkpoint"));
        leaseManager.createLeaseIfNotExists(lease);
    }

    final JFrame frame = new JFrame("Test Visualizer");
    frame.setPreferredSize(new Dimension(800, 600));
    final JPanel panel = new JPanel(new GridLayout(coordinators.size() + 1, 0));
    final JLabel ticker = new JLabel("tick");
    panel.add(ticker);
    frame.getContentPane().add(panel);

    final Map<String, JLabel> labels = new HashMap<String, JLabel>();
    for (final LeaseCoordinator<KinesisClientLease> coord : coordinators) {
        JPanel coordPanel = new JPanel();
        coordPanel.setLayout(new BoxLayout(coordPanel, BoxLayout.X_AXIS));
        final Button button = new Button("Stop " + coord.getWorkerIdentifier());
        button.setMaximumSize(new Dimension(200, 50));
        button.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent arg0) {
                if (coord.isRunning()) {
                    coord.stop();
                    button.setLabel("Start " + coord.getWorkerIdentifier());
                } else {
                    try {
                        coord.start();
                    } catch (LeasingException e) {
                        LOG.error(e);
                    }
                    button.setLabel("Stop " + coord.getWorkerIdentifier());
                }
            }

        });
        coordPanel.add(button);

        JLabel label = new JLabel();
        coordPanel.add(label);
        labels.put(coord.getWorkerIdentifier(), label);
        panel.add(coordPanel);
    }

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    new Thread() {

        // Key is lease key, value is green-ness as a value from 0 to 255.
        // Great variable name, huh?
        private Map<String, Integer> greenNesses = new HashMap<String, Integer>();

        // Key is lease key, value is last owning worker
        private Map<String, String> lastOwners = new HashMap<String, String>();

        @Override
        public void run() {
            while (true) {
                for (LeaseCoordinator<KinesisClientLease> coord : coordinators) {
                    String workerIdentifier = coord.getWorkerIdentifier();

                    JLabel label = labels.get(workerIdentifier);

                    List<KinesisClientLease> asgn = new ArrayList<KinesisClientLease>(coord.getAssignments());
                    Collections.sort(asgn, new Comparator<KinesisClientLease>() {

                        @Override
                        public int compare(KinesisClientLease arg0, KinesisClientLease arg1) {
                            return arg0.getLeaseKey().compareTo(arg1.getLeaseKey());
                        }

                    });

                    StringBuilder builder = new StringBuilder();
                    builder.append("<html>");
                    builder.append(workerIdentifier).append(":").append(asgn.size()).append("          ");

                    for (KinesisClientLease lease : asgn) {
                        String leaseKey = lease.getLeaseKey();
                        String lastOwner = lastOwners.get(leaseKey);

                        // Color things green when they switch owners, decay the green-ness over time.
                        Integer greenNess = greenNesses.get(leaseKey);
                        if (greenNess == null || lastOwner == null
                                || !lastOwner.equals(lease.getLeaseOwner())) {
                            greenNess = 200;
                        } else {
                            greenNess = Math.max(0, greenNess - 20);
                        }
                        greenNesses.put(leaseKey, greenNess);
                        lastOwners.put(leaseKey, lease.getLeaseOwner());

                        builder.append(String.format("<font color=\"%s\">%03d</font>",
                                String.format("#00%02x00", greenNess), Integer.parseInt(leaseKey))).append(" ");
                    }
                    builder.append("</html>");

                    label.setText(builder.toString());
                    label.revalidate();
                    label.repaint();
                }

                if (ticker.getText().equals("tick")) {
                    ticker.setText("tock");
                } else {
                    ticker.setText("tick");
                }

                try {
                    Thread.sleep(200);
                } catch (InterruptedException e) {
                }
            }
        }

    }.start();

    frame.pack();
    frame.setVisible(true);

    for (LeaseCoordinator<KinesisClientLease> coord : coordinators) {
        coord.start();
    }
}

---

From source file:CombinationFormatter.java

public static void main(String argv[]) {
    // a demo main() to show how CombinationFormatter could be used
    int comb1[] = { 35, 11, 19 };
    int comb2[] = { 10, 20, 30 };

    final JFormattedTextField field1 = new JFormattedTextField(new CombinationFormatter());
    field1.setValue(comb1);/*from  w w  w .j  a  v  a  2s  . co  m*/

    final JFormattedTextField field2 = new JFormattedTextField(new CombinationFormatter());
    field2.setValue(comb2);

    JPanel pan = new JPanel();
    pan.add(new JLabel("Change the combination from"));
    pan.add(field1);
    pan.add(new JLabel("to"));
    pan.add(field2);

    JButton b = new JButton("Submit");
    b.addActionListener(new java.awt.event.ActionListener() {
        public void actionPerformed(java.awt.event.ActionEvent ae) {
            try {
                field1.commitEdit(); // make sure current edit (if any) gets
                // committed
                field2.commitEdit();
            } catch (java.text.ParseException pe) {
            }
            int oldc[] = (int[]) field1.getValue();
            int newc[] = (int[]) field2.getValue();
            //
            // code to validate oldc[] and change to newc[] goes here
            //
        }
    });
    pan.add(b);

    JFrame f = new JFrame("CombinationFormatter Demo");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setContentPane(pan);
    f.setSize(360, 100);
    f.setVisible(true);
}

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From source file:ComponentTree.java

/**
 * This main() method demonstrates the use of the ComponentTree class: it
 * puts a ComponentTree component in a Frame, and uses the ComponentTree to
 * display its own GUI hierarchy. It also adds a TreeSelectionListener to
 * display additional information about each component as it is selected
 */// www  . ja  va  2s  . co  m
public static void main(String[] args) {
    // Create a frame for the demo, and handle window close requests
    JFrame frame = new JFrame("ComponentTree Demo");
    frame.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
            System.exit(0);
        }
    });

    // Create a scroll pane and a "message line" and add them to the
    // center and bottom of the frame.
    JScrollPane scrollpane = new JScrollPane();
    final JLabel msgline = new JLabel(" ");
    frame.getContentPane().add(scrollpane, BorderLayout.CENTER);
    frame.getContentPane().add(msgline, BorderLayout.SOUTH);

    // Now create the ComponentTree object, specifying the frame as the
    // component whose tree is to be displayed. Also set the tree's font.
    JTree tree = new ComponentTree(frame);
    tree.setFont(new Font("SansSerif", Font.BOLD, 12));

    // Only allow a single item in the tree to be selected at once
    tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);

    // Add an event listener for notifications when
    // the tree selection state changes.
    tree.addTreeSelectionListener(new TreeSelectionListener() {
        public void valueChanged(TreeSelectionEvent e) {
            // Tree selections are referred to by "path"
            // We only care about the last node in the path
            TreePath path = e.getPath();
            Component c = (Component) path.getLastPathComponent();
            // Now we know what component was selected, so
            // display some information about it in the message line
            if (c.isShowing()) {
                Point p = c.getLocationOnScreen();
                msgline.setText("x: " + p.x + "  y: " + p.y + "  width: " + c.getWidth() + "  height: "
                        + c.getHeight());
            } else {
                msgline.setText("component is not showing");
            }
        }
    });

    // Now that we've set up the tree, add it to the scrollpane
    scrollpane.setViewportView(tree);

    // Finally, set the size of the main window, and pop it up.
    frame.setSize(600, 400);
    frame.setVisible(true);
}

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From source file:de.codesourcery.geoip.Main.java

public static void main(String[] args) throws Exception {
    final IGeoLocator<StringSubject> locator = createGeoLocator();

    final JFrame frame = new JFrame("GeoIP");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    frame.addWindowListener(new WindowAdapter() {
        public void windowClosing(java.awt.event.WindowEvent e) {
            try {
                locator.dispose();//from   w w  w.  j  a  v a2s  .  c  o  m
            } catch (Exception e1) {
                e1.printStackTrace();
            }
        };
    });

    final MapImage image = MapImage.getRobinsonWorldMap(); // MapImage.getMillerWorldMap();      
    final MapCanvas canvas = new MapCanvas(image);

    for (GeoLocation<StringSubject> loc : locator.locate(getSpammers())) {
        if (loc.hasValidCoordinates()) {
            canvas.addCoordinate(PointRenderer.createPoint(loc, Color.YELLOW));
        }
    }

    //      canvas.addCoordinate( PointRenderer.createPoint( ZERO , Color.YELLOW ) );
    //      canvas.addCoordinate( PointRenderer.createPoint( WELLINGTON , Color.RED ) );
    //      canvas.addCoordinate( PointRenderer.createPoint( MELBOURNE , Color.RED ) );
    //      canvas.addCoordinate( PointRenderer.createPoint( HAMBURG , Color.RED ) );

    final double heightToWidth = image.height() / (double) image.width(); // preserve aspect ratio of map
    canvas.setPreferredSize(new Dimension(640, (int) Math.round(640 * heightToWidth)));

    JPanel panel = new JPanel();
    panel.setLayout(new FlowLayout());

    panel.add(new JLabel("Scale-X"));
    final JTextField scaleX = new JTextField(Double.toString(image.getScaleX()));
    scaleX.setColumns(5);

    final JTextField scaleY = new JTextField(Double.toString(image.getScaleY()));
    scaleY.setColumns(5);

    final ActionListener listener = new ActionListener() {

        @Override
        public void actionPerformed(ActionEvent e) {

            double x = Double.parseDouble(scaleX.getText());
            double y = Double.parseDouble(scaleY.getText());
            image.setScale(x, y);
            canvas.repaint();
        }
    };
    scaleX.addActionListener(listener);
    scaleY.addActionListener(listener);

    panel.add(new JLabel("Scale-X"));
    panel.add(scaleX);

    panel.add(new JLabel("Scale-Y"));
    panel.add(scaleY);

    final JTextField ipAddress = new JTextField("www.kickstarter.com");
    ipAddress.setColumns(20);

    final ActionListener ipListener = new ActionListener() {

        @Override
        public void actionPerformed(ActionEvent e) {
            final String destinationIP = ipAddress.getText();
            if (StringUtils.isBlank(destinationIP)) {
                return;
            }

            /*
             * Perform traceroute.
             */
            final List<String> hops;
            try {
                if (TracePath.isPathTracingAvailable()) {
                    hops = TracePath.trace(destinationIP);
                } else {
                    System.err.println("tracepath not available.");
                    if (TracePath.isValidAddress(destinationIP)) {
                        hops = new ArrayList<>();
                        hops.add(destinationIP);
                    } else {
                        System.err.println(destinationIP + " is no valid IP");
                        return;
                    }
                }
            } catch (Exception ex) {
                System.err.println("Failed to trace " + destinationIP);
                ex.printStackTrace();
                return;
            }

            System.out.println("Trace contains " + hops.size() + " IPs");

            /*
             * Gather locations.
             */
            final List<StringSubject> subjects = new ArrayList<>();
            for (String ip : hops) {
                subjects.add(new StringSubject(ip));
            }

            final List<GeoLocation<StringSubject>> locations;
            try {
                long time = -System.currentTimeMillis();
                locations = locator.locate(subjects);
                time += System.currentTimeMillis();

                System.out.println("Locating hops for " + destinationIP + " returned " + locations.size()
                        + " valid locations ( time: " + time + " ms)");
                System.out.flush();

            } catch (Exception e2) {
                e2.printStackTrace();
                return;
            }

            /*
             * Weed-out invalid/unknown locations.
             */
            {
                GeoLocation<StringSubject> previous = null;
                for (Iterator<GeoLocation<StringSubject>> it = locations.iterator(); it.hasNext();) {
                    final GeoLocation<StringSubject> location = it.next();
                    if (!location.hasValidCoordinates()
                            || (previous != null && previous.coordinate().equals(location.coordinate()))) {
                        it.remove();
                        System.err.println("Ignoring invalid/duplicate location for " + location);
                    } else {
                        previous = location;
                    }
                }
            }

            /*
             * Populate chart.
             */

            System.out.println("Adding " + locations.size() + " hops to chart");
            System.out.flush();

            canvas.removeAllCoordinates();

            if (locations.size() == 1) {
                canvas.addCoordinate(
                        PointRenderer.createPoint(locations.get(0), getLabel(locations.get(0)), Color.BLACK));
            } else if (locations.size() > 1) {
                GeoLocation<StringSubject> previous = locations.get(0);
                MapPoint previousPoint = PointRenderer.createPoint(previous, getLabel(previous), Color.BLACK);
                final int len = locations.size();
                for (int i = 1; i < len; i++) {
                    final GeoLocation<StringSubject> current = locations.get(i);
                    //                  final MapPoint currentPoint = PointRenderer.createPoint( current , getLabel( current ) , Color.BLACK );
                    final MapPoint currentPoint = PointRenderer.createPoint(current, Color.BLACK);

                    //                  canvas.addCoordinate( LineRenderer.createLine( previousPoint , currentPoint , Color.RED ) );
                    canvas.addCoordinate(CurvedLineRenderer.createLine(previousPoint, currentPoint, Color.RED));

                    previous = locations.get(i);
                    previousPoint = currentPoint;
                }
            }
            System.out.println("Finished adding");
            System.out.flush();
            canvas.repaint();
        }
    };
    ipAddress.addActionListener(ipListener);

    panel.add(new JLabel("IP"));
    panel.add(ipAddress);

    frame.getContentPane().setLayout(new BorderLayout());
    frame.getContentPane().add(panel, BorderLayout.NORTH);
    frame.getContentPane().add(canvas, BorderLayout.CENTER);
    frame.pack();
    frame.setVisible(true);
}

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From source file:SaveImage.java

public static void main(String s[]) {
    JFrame f = new JFrame("Save Image Sample");
    f.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
            System.exit(0);/*from ww  w  . j  a  va2s  .  co m*/
        }
    });
    SaveImage si = new SaveImage();
    f.add("Center", si);
    JComboBox choices = new JComboBox(si.getDescriptions());
    choices.setActionCommand("SetFilter");
    choices.addActionListener(si);
    JComboBox formats = new JComboBox(si.getFormats());
    formats.setActionCommand("Formats");
    formats.addActionListener(si);
    JPanel panel = new JPanel();
    panel.add(choices);
    panel.add(new JLabel("Save As"));
    panel.add(formats);
    f.add("South", panel);
    f.pack();
    f.setVisible(true);
}

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From source file:Main.java

public static JLabel newJLabel(String label) {
    JLabel ret = new JLabel(label);
    ret.setHorizontalAlignment(SwingConstants.RIGHT);
    return ret;//from  ww w.j  a  v a 2  s  . co m
}

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From source file:Main.java

static Component newLabel(String text) {
    return new JLabel(text);
}

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From source file:MainClass.java

static void addIt(JTabbedPane tabbedPane, String text) {
    JLabel label = new JLabel(text);
    JButton button = new JButton(text);
    JPanel panel = new JPanel();
    panel.add(label);//from  w  w w  . j a  v  a 2 s.c  om
    panel.add(button);
    tabbedPane.addTab(text, panel);
}

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From source file:Main.java

private static JSpinner addLabeledSpinner(String label, SpinnerModel model, boolean b) {
    JLabel l = new JLabel(label);
    //c.add(l);/*from   ww w. j  av a 2 s  . co m*/

    JSpinner spinner = new JSpinner(model);
    l.setLabelFor(spinner);
    //c.add(spinner);

    return spinner;
}

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From source file:GridLayoutDemo.java

private static JComponent createComponent(String s) {
    JLabel l = new JLabel(s);
    l.setBorder(BorderFactory.createMatteBorder(5, 5, 5, 5, Color.DARK_GRAY));
    l.setHorizontalAlignment(JLabel.CENTER);
    return l;//w w w  .  ja  v  a2s .  c  o  m
}

---

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