Java Code Examples for GridLayout

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Common ways to obtain GridLayout

private void myMethod () {
 GridLayout g =new GridLayout()
new GridLayout(0, 1, 0, int4)
new GridLayout(rows, int1)
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}

protected JComponent makeTextPanel(String text) {
  JPanel panel = new JPanel(false);
  JLabel filler = new JLabel(text);
  filler.setHorizontalAlignment(JLabel.CENTER);
  panel.setLayout(new GridLayout(1, 1));
  panel.add(filler);
  return panel;
}

  public void removeGridComponent(Component component) {
    GridLayout l = (GridLayout) getContentPane().getLayout();
    // Remove sections if necessary
    int threshold = (l.getColumns() - 1) * (l.getRows() - 1);
    if (threshold > 0 && threshold == getContentPane().getComponentCount() - 1) {
      getContentPane().setLayout(new GridLayout(l.getColumns() - 1, l.getRows() - 1));
    }
    getContentPane().remove(component);
    validate();
  }
}

public void addGridComponent(Component component) {
  GridLayout l = (GridLayout) getContentPane().getLayout();
  // Make more sections if necessary
  int availableSections = l.getColumns() * l.getRows();
  if (availableSections == getContentPane().getComponentCount()) {
    getContentPane().setLayout(new GridLayout(l.getColumns() + 1, l.getRows() + 1));
  }
  getContentPane().add(component);
  validate();
}

final JButton b = new JButton("r" + row + ",c" + col);
b.addActionListener(new ActionListener() {
JPanel p = new JPanel(new GridLayout(N, N));
for (int i = 0; i < N * N; i++) {
  int row = i / N;
  JButton gb = createGridButton(row, col);
  list.add(gb);
  p.add(gb);
JFrame f = new JFrame("GridButton");
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(createGridPanel());
f.pack();
f.setLocationRelativeTo(null);
f.setVisible(true);

private void createDebug() {
  frame = new JFrame("Smack Debug Window");
    frame.addWindowListener(new WindowAdapter() {
      @Override
      public void windowClosing(WindowEvent evt) {
  JPanel informationPanel = new JPanel();
  informationPanel.setLayout(new BoxLayout(informationPanel, BoxLayout.Y_AXIS));
  JPanel versionPanel = new JPanel();
  versionPanel.setLayout(new BoxLayout(versionPanel, BoxLayout.X_AXIS));
  versionPanel.setMaximumSize(new Dimension(2000, 31));
  JPanel iqProvidersPanel = new JPanel();
  iqProvidersPanel.setLayout(new GridLayout(1, 1));
  iqProvidersPanel.setBorder(BorderFactory.createTitledBorder("Installed IQ Providers"));
  Vector<String> providers = new Vector<>();
  JPanel extensionProvidersPanel = new JPanel();
  extensionProvidersPanel.setLayout(new GridLayout(1, 1));
  extensionProvidersPanel.setBorder(BorderFactory.createTitledBorder("Installed Extension Providers"));
  providers = new Vector<>();
  frame.getContentPane().add(tabbedPane);
  frame.setSize(650, 400);

 JFrame frame = new JFrame("Colored Trails");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel mainPanel = new JPanel();
mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));
JPanel firstPanel = new JPanel();
firstPanel.setLayout(new GridLayout(4, 4));
firstPanel.setMaximumSize(new Dimension(400, 400));
JButton btn;
for (int i=1; i<=4; i++) {
  for (int j=1; j<=4; j++) {
    btn = new JButton();
    btn.setPreferredSize(new Dimension(100, 100));
    firstPanel.add(btn);
JPanel secondPanel = new JPanel();
secondPanel.setLayout(new GridLayout(5, 13));
secondPanel.setMaximumSize(new Dimension(520, 200));
for (int i=1; i<=5; i++) {
  for (int j=1; j<=13; j++) {
    btn = new JButton();
    btn.setPreferredSize(new Dimension(40, 40));
    secondPanel.add(btn);
frame.setSize(520,600);

  return;
final JFrame exceptionFrame = new JFrame("Uncaught exception: " + e.getMessage());
Icon errorIcon = UIManager.getIcon("OptionPane.errorIcon");
BufferedImage errorImage = new BufferedImage(
    errorIcon.getIconWidth(), errorIcon.getIconHeight(), BufferedImage.TYPE_INT_RGB);
errorIcon.paintIcon(null, errorImage.getGraphics(), 0, 0);
exceptionFrame.setIconImage(errorImage);
exceptionFrame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
JPanel contentPanel = new JPanel(new BorderLayout(5, 5));
contentPanel.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
contentPanel.add(new JLabel("An uncaught exception has occurred: "), BorderLayout.NORTH);
JTextArea stackTraceTextArea = new JTextArea(30, 80);
stackTraceTextArea.setEditable(false);
contentPanel.add(stackTraceScrollPane, BorderLayout.CENTER);
stackTraceTextArea.setCaretPosition(0); // Scroll to top
JPanel buttonPanel = new JPanel(new GridLayout(1, 0));
JButton closeButton = new JButton(new AbstractAction("Close") {
  @Override
  public void actionPerformed(ActionEvent e) {
buttonPanel.add(closeButton);
JButton exitApplicationButton = new JButton(new AbstractAction("Exit application") {
  @Override
  public void actionPerformed(ActionEvent e) {

jb_add.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
jb_addAndClose.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
jb_cancel.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
c.setLayout(new BorderLayout());
  JPanel jp = new JPanel(new BorderLayout());
    JPanel jp_west = new JPanel(new GridLayout(2, 1));
    jp_west.add(new JLabel(" Content type: "));
    jp_west.add(new JLabel(" Name: "));
    jp.add(jp_west, BorderLayout.WEST);
    JPanel jp_center = new JPanel(new GridLayout(2, 1));
    jp_center.add(jp_contentType.getComponent());
    jp_center.add(UIUtil.getFlowLayoutPanelLeftAligned(jtf_name));
  c.add(jp, BorderLayout.NORTH);
  c.add(jsp, BorderLayout.CENTER);

c.setLayout(new BorderLayout());
JPanel jp_center = new JPanel();
jp_center.setBorder(BorderFactory.createTitledBorder("Run Test"));
jp_center.setLayout(new GridLayout(3, 1));
jp_center.add(jrb_archive);
JPanel jp_center_file = new JPanel();
jtf_archive.setEditable(false);
jp_center_file.add(jtf_archive);
jb_archive_browse.setMnemonic('b');
jb_archive_browse.addActionListener(new ActionListener() {
  @Override
  public void actionPerformed(ActionEvent e) {
jp_center.add(jp_center_file);
jp_center.add(jrb_last);
c.add(jp_center, BorderLayout.CENTER);
JPanel jp_south = new JPanel();
jp_south.setLayout(new FlowLayout(FlowLayout.RIGHT));
jb_next.setMnemonic('n');
getRootPane().setDefaultButton(jb_next);
jb_next.addActionListener(new ActionListener() {
jp_south.add(jb_cancel);
c.add(jp_south, BorderLayout.SOUTH);

protected JDialog createDialog(Component parent) {
  Frame frame = parent instanceof Frame ? (Frame) parent
      : (Frame) SwingUtilities.getAncestorOfClass(Frame.class, parent);
  JDialog dialog = new JDialog(frame, ("Select Font"), true);
  Action okAction = new DialogOKAction(dialog);
  Action cancelAction = new DialogCancelAction(dialog);
  JButton okButton = new JButton(okAction);
  okButton.setFont(DEFAULT_FONT);
  JButton cancelButton = new JButton(cancelAction);
  cancelButton.setFont(DEFAULT_FONT);
  JPanel buttonsPanel = new JPanel();
  buttonsPanel.setLayout(new GridLayout(2, 1));
  buttonsPanel.add(okButton);
  buttonsPanel.add(cancelButton);
  buttonsPanel.setBorder(BorderFactory.createEmptyBorder(25, 0, 10, 10));
  ActionMap actionMap = buttonsPanel.getActionMap();
  actionMap.put(cancelAction.getValue(Action.DEFAULT), cancelAction);
  actionMap.put(okAction.getValue(Action.DEFAULT), okAction);
  InputMap inputMap = buttonsPanel.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
  inputMap.put(KeyStroke.getKeyStroke("ESCAPE"), cancelAction.getValue(Action.DEFAULT));
  inputMap.put(KeyStroke.getKeyStroke("ENTER"), okAction.getValue(Action.DEFAULT));
  JPanel dialogEastPanel = new JPanel();
  dialogEastPanel.setLayout(new BorderLayout());
  dialogEastPanel.add(buttonsPanel, BorderLayout.NORTH);
  dialog.getContentPane().add(this, BorderLayout.CENTER);
  dialog.getContentPane().add(dialogEastPanel, BorderLayout.EAST);
  dialog.pack();
  dialog.setLocationRelativeTo(frame);
  return dialog;
}

 JFrame frame = new JFrame("test");
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
JPanel panel = new JPanel(new GridLayout(4,4,4,4));

for(int i=0 ; i<16 ; i++){
  JButton btn = new JButton(String.valueOf(i));
  btn.setPreferredSize(new Dimension(40, 40));
  panel.add(btn);
}
frame.setContentPane(panel);
frame.pack();
frame.setVisible(true);

topPanel = new JPanel();         // our top component
bottomPanel = new JPanel();      // our bottom component
inputPanel = new JPanel();
textField = new JTextField();    // first the input field where the user can type his text
button = new JButton("send");    // and a button at the right, to send the text
getContentPane().setLayout(new GridLayout());  // the default GridLayout is like a grid with 1 column and 1 row,
getContentPane().add(splitPane);               // due to the GridLayout, our splitPane will now fill the whole window
inputPanel.add(button);           // and right the "send" button
pack();   // calling pack() at the end, will ensure that every layout and size we just defined gets applied before the stuff becomes visible
  @Override
  public void run(){
    new MyFrame().setVisible(true);

final JFrame frame = new JFrame("Nested Layout Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final JPanel gui = new JPanel(new BorderLayout(5,5));
gui.setBorder( new TitledBorder("BorderLayout(5,5)") );
plafComponents.add(plafChooser);
plafComponents.add(pack);
gui.add(plafComponents, BorderLayout.NORTH);
final JPanel labels = new JPanel(new GridLayout(0,2,3,3));
labels.setBorder(
  new TitledBorder("GridLayout(0,2,3,3)") );
JButton addNew = new JButton("Add Another Label");
dynamicLabels.add( addNew, BorderLayout.NORTH );
addNew.addActionListener( new ActionListener(){
gui.add( splitPane, BorderLayout.CENTER );
frame.setContentPane(gui);
frame.pack();
frame.setLocationRelativeTo(null);

public Calculator() {
   window = new JFrame("Calculator");
   window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JPanel digitsPanel = new JPanel();
   digitsPanel.setLayout(new GridLayout(4, 3));
   for (int digit = 0; digit <=9; digit++) {
     JButton button = new JButton(Integer.toString(digit));
     button.addActionListener(this);
     digitsPanel.add(button);
   }
   window.add(digitsPanel);
   window.pack();
   window.setVisible(true);
 }

final JButton openFileButton = new JButton(new FileSelectionAction());
openFileButton.setMnemonic(KeyEvent.VK_S);
openFileButton.setText("Open File");
modesLabel.setBorder(BorderFactory.createEmptyBorder(0, leftIndentation, 0, 0));
final JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new GridLayout(1, 2));
buttonPanel.add(openFileButton);
buttonPanel.add(reloadFileButton);

JPanel p = new JPanel(new GridLayout(2,1));
header.setPreferredSize(new Dimension(100, HEADER_HEIGHT));
p.add(makeTitledPanel("Bad: JTableHeader#setPreferredSize(...)", new JScrollPane(table1)));
p.add(makeTitledPanel("Override getPreferredSize()", scroll));
panel.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
return panel;
JPanel p = new JPanel(new BorderLayout());
p.add(c);
p.setBorder(BorderFactory.createTitledBorder(title));
JFrame f = new JFrame();
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.getContentPane().add(new TableHeaderHeightTest().makeUI());
f.setSize(320, 320);
f.setLocationRelativeTo(null);
f.setVisible(true);

JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel p = new JPanel();
p.add(f);
frame.add(p);
frame.pack();
frame.setVisible(true);
autoSuggestionPopUpWindow.setOpacity(opacity);
suggestionsPanel = new JPanel();
suggestionsPanel.setLayout(new GridLayout(0, 1));
suggestionsPanel.setBackground(popUpBackground);
textField.getInputMap(JComponent.WHEN_FOCUSED).put(KeyStroke.getKeyStroke(KeyEvent.VK_DOWN, 0, true), "Down released");
textField.getActionMap().put("Down released", new AbstractAction() {
  @Override
  public void actionPerformed(ActionEvent ae) {//focuses the first label on popwindow

JFrame frame = new JFrame("Layout Example");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
JPanel contentPane = new JPanel(
        new GridLayout(0, 1, hGap, vGap));
contentPane.setBorder(
  BorderFactory.createEmptyBorder(hGap, vGap, hGap, vGap));
borderPanel = new JPanel(new BorderLayout(hGap, vGap));
borderPanel.setBorder(
  BorderFactory.createTitledBorder("BorderLayout"));
borderPanel.setOpaque(true);
  buttons[i] = new JButton(borderConstraints[i]);
  borderPanel.add(buttons[i], borderConstraints[i]);
contentPane.add(borderPanel);
flowPanel = new JPanel(new FlowLayout(
  buttons[i] = new JButton(Integer.toString(i));
  flowPanel.add(buttons[i]);
gridPanel = new JPanel(new GridLayout(2, 2, hGap, vGap));
  buttons[i] = new JButton(Integer.toString(i));

final JFrame frame = new JFrame("Text HIGHLIGHT");
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
JPanel contentPane = new JPanel();
contentPane.setBorder(BorderFactory.createTitledBorder(
    BorderFactory.createEmptyBorder(5, 5, 5, 5), "Highlighter JTextArea"));
contentPane.add(scrollPane);
JButton remHighButton = new JButton("REMOVE HIGHLIGHT");
remHighButton.addActionListener(new ActionListener()
JButton button = new JButton("HIGHLIGHT TEXT");
button.addActionListener(new ActionListener()
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);
JPanel panel = new JPanel();
panel.setBorder(BorderFactory.createTitledBorder(
        BorderFactory.createLineBorder(Color.DARK_GRAY, 2), "COLOUR SELECTION"));
panel.setLayout(new GridLayout(0, 2, 5, 5));

private static final Dimension LAYERED_PANE_SIZE = new Dimension(WIDTH, HEIGHT);
private static final Dimension LABEL_SIZE = new Dimension(60, 40);
private GridLayout gridlayout = new GridLayout(GRID_ROWS, GRID_COLS, GAP, GAP);
private JPanel backingPanel = new JPanel(gridlayout);
private JPanel[][] panelGrid = new JPanel[GRID_ROWS][GRID_COLS];
private JLabel redLabel = new JLabel("Red", SwingConstants.CENTER);
  redLabel.setOpaque(true);
  redLabel.setBackground(Color.red.brighter().brighter());
  redLabel.setPreferredSize(LABEL_SIZE);
  panelGrid[4][3].add(redLabel);
  blueLabel.setOpaque(true);
  blueLabel.setBackground(Color.blue.brighter().brighter());
  blueLabel.setPreferredSize(LABEL_SIZE);
  panelGrid[1][1].add(blueLabel);
  backingPanel.setBorder(BorderFactory.createEmptyBorder(GAP, GAP, GAP, GAP));
  JFrame frame = new JFrame("DragLabelOnLayeredPane");
  frame.getContentPane().add(new DragLabelOnLayeredPane());
  frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  frame.pack();
  frame.setLocationRelativeTo(null);
  frame.setVisible(true);

Javadoc

The GridLayout class is a layout manager that lays out a container's components in a rectangular grid. The container is divided into equal-sized rectangles, and one component is placed in each rectangle. For example, the following is an applet that lays out six buttons into three rows and two columns: Note: The following code example includes classes that do not appear in this specification. Their inclusion is purely to serve as a demonstration.

 
import java.awt.*; 
import java.applet.Applet; 
public class ButtonGrid extends Applet { 
public void init() { 
setLayout(new GridLayout(3,2)); 
add(new Button("1")); 
add(new Button("2")); 
add(new Button("3")); 
add(new Button("4")); 
add(new Button("5")); 
add(new Button("6")); 
} 
}

It produces the following output:

Most used methods

<init>
Creates a grid layout with the specified number of rows and columns. All components in the layout ar
setHgap
Sets the horizontal gap between components to the specified value.
setVgap
Sets the vertical gap between components to the specified value.
setColumns
Sets the number of columns in this layout to the specified value. Setting the number of columns has
setRows
Sets the number of rows in this layout to the specified value.
getColumns
Gets the number of columns in this layout.
getRows
Gets the number of rows in this layout.
getHgap
Gets the horizontal gap between components.
getVgap
Gets the vertical gap between components.
layoutContainer
Lays out the specified container using this layout. This method reshapes the components in the speci
add
addComponent

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How to useGridLayout in java.awt

Best Java code snippets using java.awt.GridLayout (Showing top 20 results out of 7,425)

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GridLayout
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java.awt