How to use

getHeight

method

in

java.awt.Component

private void readPositionFromComponent(Component component) {
  isFullScreen = false;
  windowWidth = component.getWidth();
  windowHeight = component.getHeight();
  windowX = component.getX();
  windowY = component.getY();
}

 component.getWidth(),
 component.getHeight(),
 BufferedImage.TYPE_INT_RGB
 );
Runnable r = new Runnable() {
 public void run() {
  final JFrame f = new JFrame("Test Screenshot");
  p.add( new JScrollPane(new JTree()),
   BorderLayout.WEST );
  p.add( new JScrollPane( new JTextArea(HELP,10,30) ),
   BorderLayout.CENTER );
  f.pack();
  f.setLocationRelativeTo(null);
  f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  f.setVisible(true);

constraints.fill = GridBagConstraints.BOTH;
JLabel l = new JLabel("You have got 2 new Messages.");
panel.add(l, constraints);
constraints.gridx++;
constraints.weightx = 0f;
b.setMargin(new Insets(1, 4, 1, 4));
b.setFocusable(false);
panel.add(b, constraints);
dialog.setUndecorated(true);
dialog.setSize(300, 100);
dialog.setLocation(screenSize.width - dialog.getWidth(),
    screenSize.height - taskBarSize - dialog.getHeight());
lpg = new LinearGradientPaint(0, 0, 0, dialog.getHeight() / 2,
    new float[]{0f, 0.3f, 1f}, new Color[]{new Color(0.8f, 0.8f, 1f),
      new Color(0.7f, 0.7f, 1f), new Color(0.6f, 0.6f, 1f)});

 Component c; // the component you would like to print to a BufferedImage
JFrame frame = new JFrame();
frame.setBackground(Color.WHITE);
frame.setUndecorated(true);
frame.getContentPane().add(c);
frame.pack();
BufferedImage bi = new BufferedImage(c.getWidth(), c.getHeight(), BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics = bi.createGraphics();
c.print(graphics);
graphics.dispose();
frame.dispose();

JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
p.add(f);
frame.add(p);
frame.setVisible(true);
            lastFocusableIndex = 0;
            sl.setFocused(false);
            autoSuggestionPopUpWindow.setVisible(false);
            setFocusToTextField();
      autoSuggestionPopUpWindow.setVisible(false);
      setFocusToTextField();
suggestionsPanel.add(suggestionLabel);
  windowY = container.getY() + textField.getY() + textField.getHeight() + autoSuggestionPopUpWindow.getMinimumSize().height;
} else {
  windowY = container.getY() + textField.getY() + textField.getHeight() + autoSuggestionPopUpWindow.getHeight();

final int taskBarSize = scnMax.bottom;
setLocation(screenSize.width - getWidth(), screenSize.height - taskBarSize
  - getHeight());
lpg = new LinearGradientPaint(0, 0, 0, getHeight() / 2, new float[] { 0f,
  0.3f, 1f }, new Color[] { new Color(0.8f, 0.8f, 1f),
  new Color(0.7f, 0.7f, 1f), new Color(0.6f, 0.6f, 1f) });
  l.setOpaque(false);
  c.add(l, constraints);
  b.setFocusable(false);
  c.add(b, constraints);

  @Override
  public void componentResized(ComponentEvent e) {
    int w = e.getComponent().getWidth();
    int h = e.getComponent().getHeight();
    System.out.println("mainResized:" + w + " " + h);
    for (MapLayer ml : layers) {
      ml.setBounds(new Rectangle(0, 0, w, h));
    }
    repaint();
  }
});

JFrame f = new JFrame("LowerRightFrame");
f.add(new JPanel() {
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
GraphicsDevice defaultScreen = ge.getDefaultScreenDevice();
Rectangle rect = defaultScreen.getDefaultConfiguration().getBounds();
int x = (int) rect.getMaxX() - f.getWidth();
int y = (int) rect.getMaxY() - f.getHeight();
f.setLocation(x, y);
f.setVisible(true);

if (useSlideButton) {
  final JPanel statusPanel = new JPanel();
  basePanel.add(statusPanel, BorderLayout.SOUTH);
  statusPanel.add(new JButton("Slide Left") {
    private static final long serialVersionUID = 9204819004142223529L;
  statusPanel.add(new JButton("Slide Right") {
    componentNew = jPanels.get(0);
  final int w = componentOld.getWidth();
  final int h = componentOld.getHeight();
  final Point p1 = componentOld.getLocation();
  final Point p2 = new Point(0, 0);
  int step = 0;
  if ((slideType == LEFT) || (slideType == RIGHT)) {
    step = (int) (((float) parent.getWidth() / (float) Toolkit.getDefaultToolkit().getScreenSize().width) * 40.f);
    step = (int) (((float) parent.getHeight() / (float) Toolkit.getDefaultToolkit().getScreenSize().height) * 20.f);

private void recenterMouse(final Component component) {
  if (robot != null) {
    eventsSinceRecenter = 0;
    isRecentering = true;
    centerLocation.setLocation(component.getWidth() / 2, component.getHeight() / 2);
    centerLocationOnScreen.setLocation(centerLocation);
    SwingUtilities.convertPointToScreen(centerLocationOnScreen, component);
    robot.mouseMove(centerLocationOnScreen.x, centerLocationOnScreen.y);
  }
}

frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.add(jsp);
frame.setVisible(true);
BufferedImage bi = componentToImage(imagePanel, true);
try {
  BufferedImage img = new BufferedImage(component.getWidth(), component.getHeight(), BufferedImage.TRANSLUCENT);
  Graphics2D g2d = (Graphics2D) img.getGraphics();
  g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
  component.setSize(component.getPreferredSize());
  layoutComponent(component);
  BufferedImage img = new BufferedImage(component.getWidth(), component.getHeight(), BufferedImage.TRANSLUCENT);
  CellRendererPane crp = new CellRendererPane();
  crp.add(component);
  crp.paintComponent(img.createGraphics(), component, crp, component.getBounds());
  return img;

public void setupUI(Frame frame) {
  JScrollPane sp = new JScrollPane(editor);
  getContentPane().add(sp);
  
  pack();
  
  setSize(800, 600);
  setLocation(frame.getLocationOnScreen().x + 
    (frame.getWidth() - getSize().width) / 2,
    frame.getLocationOnScreen().y + 
    (frame.getHeight() - getSize().height) / 2);
}

 @Override
 public void componentResized(ComponentEvent e) {
  Component source = (Component) e.getSource();
  resizeMe(source.getWidth(), source.getHeight());
 }
});

 import javax.swing.*;
import java.awt.*;

public class TestFrameSize {

  public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//        frame.setSize(new Dimension(450, 400));
    frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
//        frame.setLayout(new BorderLayout());

    JLabel question = new JLabel("But that's whole code... Those 3 lines are whole code ");
    question.setHorizontalAlignment(JLabel.CENTER);
    frame.add(question);
    frame.setVisible(true);

    System.out.println(frame.getWidth() + " : " + frame.getHeight());
  }
}

  "dialog decoration.");
p.add(l);
getContentPane().add(p, BorderLayout.CENTER);
p.add(b);
getContentPane().add(p, BorderLayout.SOUTH);
int w = Math.max(240, getWidth() + 32), h = getHeight();		
Point loc = new Point(
  owner.getLocationOnScreen().x + (owner.getWidth() - w) / 2,
  owner.getLocationOnScreen().y + (owner.getHeight() - w) * 2 / 3);

Insets insets = parent.getInsets();
int width = parent.getWidth() - insets.left - insets.right;
int height = parent.getHeight() - insets.top - insets.bottom;

 import Utilities.*;
import javax.swing.*;
import javax.imageio.*;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
public class GradientMask {
  public static void main(String[] args) throws Exception{
    JFrame Main = new JFrame("Gradient Mask");
    JLabel imageLayer = new JLabel();
    JLabel maskLayer = new JLabel();
    BufferedImage image = ImageIO.read(new File("C:\\Users\\"+System.getenv("username")+"\\Desktop\\Cat Image.jpg"));
    BufferedImage gradientMask = new GradientImage(image.getWidth(), image.getHeight(), new Color[]{new Color(255, 255, 255, 125), Color.BLACK}, GradientImage.RADIAL_FROM_CENTER).getImage();
    Main.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Main.setBounds(100, 50, image.getWidth(), image.getHeight());
    imageLayer.setBounds(0, 0, Main.getWidth(), Main.getHeight());
    maskLayer.setBounds(0, 0, Main.getWidth(), Main.getHeight());
    imageLayer.setIcon(new ImageIcon((Image) image));
    maskLayer.setIcon(new ImageIcon((Image) gradientMask));
    Main.getContentPane().add(imageLayer);
    imageLayer.add(maskLayer);
    Main.setVisible(true);
  }
}

public ProgressDialog(Component parent, int steps, String string) {
  setTitle("Exporting file...");
  setModal(true);
  this.exception = null;
  this.progress = 0;
  getContentPane().setLayout(new BorderLayout());
  JPanel center = new JPanel(new GridLayout(2, 1));
  progressBar = new JProgressBar(0, steps);
  center.add(progressBar);
  label = new JLabel(string);
  center.add(label);
  getContentPane().add(center, BorderLayout.CENTER);
  JPanel buttons = new JPanel(new FlowLayout(FlowLayout.CENTER));
  JButton cancel = new JButton("Cancel");
  cancel.addActionListener(new ActionListener() {
    public void actionPerformed(ActionEvent e) {
      cancel();
    }
  });
  buttons.add(cancel);
  getContentPane().add(buttons, BorderLayout.SOUTH);
  setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
  pack();
  if (parent != null) {
    Point pLoc = parent.getLocation();
    setLocation(pLoc.x + parent.getWidth() / 2 - getWidth() / 2, pLoc.y
        + parent.getHeight() / 2 - getHeight() / 2);
  }
}

public static Point keepComponentInsideParent(Point l, Point parentPoint, Component c, Component parent) {
  int dx = parentPoint.x + parent.getWidth() - DEFAULT_INSETS.right - COMPONENT_INSETS.right;
  if (l.x + c.getWidth() > dx) {
    l.x = dx - c.getWidth();
  }
  int dy = parentPoint.y + parent.getHeight() - DEFAULT_INSETS.bottom - COMPONENT_INSETS.bottom;
  if (l.y + c.getHeight() > dy) {
    l.y = Math.max(10, dy - c.getHeight());
  }
  return l;
}

 import java.awt.BorderLayout;
import java.awt.Container;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.border.EmptyBorder;

public class ALineBorder {

  public static void main(String args[]) {
    JFrame frame = new JFrame("Line Borders");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JButton button1 = new JButton("Button1");
    button1.setBorder( new EmptyBorder( 8, 8, 8, 8 ) );
    JButton button2 = new JButton("Button2");
    JButton button3 = new JButton("Button3");
    button3.setBorder( new EmptyBorder( 16, 16, 16, 16 ) );
    Container contentPane = frame.getContentPane();
    contentPane.add(button1, BorderLayout.WEST);
    contentPane.add(button2, BorderLayout.CENTER);
    contentPane.add(button3, BorderLayout.EAST);
    frame.pack();
    frame.setSize(300, frame.getHeight());
    frame.setVisible(true);
  }

}