How to use

setLocationByPlatform

method

in

java.awt.Window

 import javax.swing.JFrame;
import javax.swing.JLabel;

public class Annoying {
  public static void main(String[] args) {
    JFrame frame = new JFrame("Hello!!");

    // Set's the window to be "always on top"
    frame.setAlwaysOnTop( true );

    frame.setLocationByPlatform( true );
    frame.add( new JLabel("  Isn't this annoying?") );
    frame.pack();
    frame.setVisible( true );
  }
}

  JFrame f = new JFrame("Frame " + ii);
  f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
  String s =
    "os.name: " + System.getProperty("os.name") +
    "\nos.version: " + System.getProperty("os.version");
  f.add(new JTextArea(s,3,28));  // suggest a size
  f.pack();
  f.setLocationByPlatform(true);
  f.setVisible(true);
SwingUtilities.invokeLater( new Runnable() {
  public void run() {
    try {

SwingUtilities.invokeLater( new Runnable() {
  public void run() {
    + "The effect we want is a multi-line label.";
    JFrame f = new JFrame("Label Render Test");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JLabel imageLabel = new JLabel(ii);
    f.getContentPane().add(imageLabel);
    f.pack();
    f.setLocationByPlatform(true);
    f.setVisible(true);

    final JFrame frame = new JFrame("Nested Layout Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    plafComponents.add(plafChooser);
    plafComponents.add(pack);
          SwingUtilities.updateComponentTreeUI(frame);
          if (pack.isSelected()) {
            frame.pack();
            frame.setMinimumSize(frame.getSize());
    gui.add(plafComponents, BorderLayout.NORTH);
    frame.pack();
      frame.setLocationByPlatform(true);
      frame.setMinimumSize(frame.getSize());
    } catch(Throwable ignoreAndContinue) {
    frame.setVisible(true);
SwingUtilities.invokeLater(r);

SwingUtilities.invokeLater(new Runnable() {
  public void run() {
    JPanel p = new JPanel(new GridLayout(2,2,4,4));
    border.add(getLabel(
      "Border", SwingConstants.CENTER), BorderLayout.CENTER);
    p.add(border);
    gridbag.add(getLabel("GridBag"));
    p.add(gridbag);
    p.add(box);
    JFrame f = new JFrame("Streeeetch me..");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setContentPane(p);
    f.pack();
    f.setLocationByPlatform(true);
    f.setVisible(true);

JFrame frame = new JFrame("DrawGraph");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
SwingUtilities.invokeLater(new Runnable() {
  public void run() {
   createAndShowGui();

JFrame frame = new JFrame("Image Example");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);

JFrame frame = new JFrame("Input Integer Example");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
((AbstractDocument)tField.getDocument()).setDocumentFilter(
    new MyDocumentFilter());        
contentPane.add(tField); 
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);

final JFrame f = new JFrame("Good Location & Size");
f.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
f.addWindowListener( new WindowAdapter() {
  public void windowClosing(WindowEvent we) {
f.add(ta);
f.pack();
  f.setLocationByPlatform(true);
f.setVisible(true);

SwingUtilities.invokeLater(new Runnable() {
  public void run() {
    final JFrame f = new JFrame("Say Bye Bye!");
    f.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
    f.addWindowListener( new WindowAdapter() {
      @Override
    f.setLocationByPlatform(true);
    f.setVisible(true);

 import javax.swing.*;

class CenterTheDialog {

  CenterTheDialog() {
    for (int ii=1; ii<4; ii++) {
      JFrame f = new JFrame("Frame " + ii);
      f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

      f.setSize(400,300);
      f.setLocationByPlatform(true);
      f.setVisible(true);

      JDialog d = new JDialog(f);
      d.setSize(300,200);
      d.setLocationRelativeTo(f);
      d.setVisible(true);
    }
  }

  public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {
      public void run() {
        new CenterTheDialog();
      }
    });
  }
}

    tree.expandRow(ii);
  gui.add(buttonPanel, BorderLayout.PAGE_START);
  buttonPanel.add(new JLabel("H Gap"));
if (c instanceof Window) {
  Window w = (Window)c;
  w.pack();
    JFrame f = new JFrame("White (OK Red) Space");
    f.add(gui);
    f.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
    f.setLocationByPlatform(true);
    f.pack();
    f.setVisible(true);
SwingUtilities.invokeLater(r);

JFrame frame = new JFrame("Layout Example");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
for (int i = 0; i < 5; i++) {
  buttons[i] = new JButton(borderConstraints[i]);
  borderPanel.add(buttons[i], borderConstraints[i]);
contentPane.add(borderPanel);
for (int i = 5; i < 8; i++) {
  buttons[i] = new JButton(Integer.toString(i));
  flowPanel.add(buttons[i]);
contentPane.add(flowPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);

ArrowTest mainPanel = new ArrowTest();
JFrame frame = new JFrame("ArrowTest");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
SwingUtilities.invokeLater(new Runnable() {
  public void run() {
   createAndShowGui();

final JFrame frame = new JFrame("Text HIGHLIGHT");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
contentPane.add(scrollPane);
frame.add(remHighButton, BorderLayout.PAGE_START);
frame.add(contentPane, BorderLayout.CENTER);
frame.add(button, BorderLayout.PAGE_END);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
SwingUtilities.invokeLater(new Runnable()

ArrowTest mainPanel = new ArrowTest();
JFrame frame = new JFrame("ArrowTest");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
SwingUtilities.invokeLater(new Runnable() {
  public void run() {
   createAndShowGui();

URL url = new URL("http://i.stack.imgur.com/iQFxo.gif");
final Image image = new ImageIcon(url).getImage();
SwingUtilities.invokeLater(new Runnable() {
  public void run() {
    JFrame f = new JFrame("Image");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setLocationByPlatform(true);
    imagePanel.setBorder(new EmptyBorder(20,20,20,20));
    for (int ii=1; ii<51; ii++) {
      imagePanel.add(new JButton("" + ii));
    f.pack();
    f.setVisible(true);

public void run() {
  JFrame frame = new JFrame("Gabby");
  final JPanel dm = new JPanel() {
  dm.setBorder(BorderFactory.createLineBorder(Color.blue, 10));
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frame.add(dm);
  frame.pack();
  frame.setLocationByPlatform(true);
  menuBar.add(fileMenu);
  frame.setJMenuBar(menuBar);
  frame.setVisible(true);

@Override
public void run() {
  JFrame f = new JFrame("Image");
  f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  f.setLocationByPlatform(true);
  imagePanel.setBorder(new EmptyBorder(20, 20, 20, 20));
  for (int ii = 1; ii < 51; ii++) {
    imagePanel.add(new JButton("" + ii));
  f.pack();
  f.setVisible(true);

  toggleBtn.addActionListener(btnListener);
  toggleBtn.setActionCommand(text);
  btnPanel.add(toggleBtn);
  btnGroup.add(toggleBtn);
otherPanel.add(textField ); // just to take focus elsewhere
add(btnPanel);
add(otherPanel);
BunchOfButtons mainPanel = new BunchOfButtons();
JFrame frame = new JFrame("BunchOfButtons");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().add(mainPanel);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
SwingUtilities.invokeLater(new Runnable() {
  public void run() {
   createAndShowGui();