Example usage for javax.swing JPanel setLayout

Introduction

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

Prototype

public void setLayout(LayoutManager mgr) 

Source Link

Document

Sets the layout manager for this container.

Usage

From source file:Main.java

public static void main(String args[]) {
    JPanel container = new ScrollablePanel();
    container.setLayout(new FlowLayout(FlowLayout.CENTER, 0, 0));
    for (int i = 0; i < 20; ++i) {
        JPanel p = new JPanel();
        p.setPreferredSize(new Dimension(50, 50));
        p.add(new JLabel("" + i));
        container.add(p);//  ww w  .ja v a  2 s  .c om
    }

    JScrollPane scroll = new JScrollPane(container);
    scroll.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
    scroll.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);

    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().add(scroll);
    f.pack();
    f.setSize(250, 300);
    f.setVisible(true);
}

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From source file:GridBagWithAnchor.java

public static void main(String[] args) {
    JFrame f = new JFrame("Demonstrates the use of anchor constraints");
    JPanel p = new JPanel(new GridBagLayout());

    p.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();
    c.insets = new Insets(2, 2, 2, 2);
    c.weighty = 1.0;//from w ww  .j  av a 2  s . com
    c.weightx = 1.0;
    c.gridx = 0;
    c.gridy = 0;
    c.gridheight = 2;
    c.anchor = GridBagConstraints.NORTH; // place component on the North
    p.add(new JButton("Java"), c);
    c.gridx = 1;
    c.gridheight = 1;
    c.gridwidth = 2;
    c.anchor = GridBagConstraints.SOUTHWEST;
    p.add(new JButton("Source"), c);
    c.gridy = 1;
    c.gridwidth = 1;
    c.anchor = GridBagConstraints.CENTER; // remember to rest to center
    p.add(new JButton("and"), c);
    c.gridx = 2;
    p.add(new JButton("Support !!!"), c);

    WindowListener wndCloser = new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
            System.exit(0);
        }
    };
    f.addWindowListener(wndCloser);

    f.getContentPane().add(p);
    f.setSize(600, 200);
    f.show();
}

---

From source file:Main.java

public static void main(String[] args) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JPanel controlPane = new JPanel();
    JPanel buttonPane = new JPanel();

    controlPane.setLayout(new BoxLayout(controlPane, BoxLayout.PAGE_AXIS));
    controlPane.setPreferredSize(new Dimension(200, 200));
    controlPane.add(new JScrollPane(new JTextArea()));

    buttonPane.setLayout(new FlowLayout(FlowLayout.LEFT));
    buttonPane.setPreferredSize(new Dimension(100, 40));
    buttonPane.add(new JButton("Button1"));
    buttonPane.add(new JButton("Button2"));

    frame.add(controlPane, BorderLayout.NORTH);
    frame.add(buttonPane, BorderLayout.SOUTH);

    frame.pack();//from ww w.  j  a va2  s .c o  m
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String[] args) {
    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel p = new JPanel();
    p.setOpaque(true);/* ww  w  .j a  v a 2s .c  o m*/
    p.setLayout(new FlowLayout());
    p.add(good);

    f.add(p, BorderLayout.CENTER);
    f.add(resultLabel, BorderLayout.SOUTH);
    good.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent ev) {
            resultLabel.setText("Working . . .");
            good.setEnabled(false);
            Thread worker = new Thread() {
                public void run() {
                    try {
                        Thread.sleep(5000);
                    } catch (InterruptedException ex) {
                    }
                    SwingUtilities.invokeLater(new Runnable() {
                        public void run() {
                            resultLabel.setText("Ready");
                            good.setEnabled(true);
                        }
                    });
                }
            };
            worker.start(); // So we don't hold up the dispatch thread.
        }
    });
    f.setSize(300, 100);
    f.setVisible(true);
}

---

From source file:Main.java

public static void main(String[] args) {
    JFrame frame = new JFrame();
    JPanel panel = (JPanel) frame.getContentPane();
    panel.setLayout(new BorderLayout());
    JTextField field = new JTextField(20);
    Main spinner = new Main();

    panel.add(field, "Center");
    panel.add(spinner, "East");

    Dimension dim = frame.getToolkit().getScreenSize();
    frame.setLocation(dim.width / 2 - frame.getWidth() / 2, dim.height / 2 - frame.getHeight() / 2);
    frame.pack();/*from   w  ww . j  av a 2s .  c  om*/
    frame.show();
}

---

From source file:Main.java

public static void main(String[] args) {
    JFrame frame = new JFrame("BoxLayout  Test");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();

    JPanel hPanel = new JPanel();
    BoxLayout boxLayout = new BoxLayout(hPanel, BoxLayout.X_AXIS);
    hPanel.setLayout(boxLayout);

    for (int i = 1; i <= 5; i++) {
        hPanel.add(new JButton("Button  " + i));
    }/*from   ww  w .  j a  v a2 s  . co m*/

    contentPane.add(hPanel, BorderLayout.SOUTH);
    frame.pack();
    frame.setVisible(true);
}

---

From source file:Main.java

public static void main(String[] args) {
    JPanel gui = new JPanel(new BorderLayout(2, 2));
    BufferedImage bi = new BufferedImage(600, 200, BufferedImage.TYPE_INT_RGB);
    gui.add(new JLabel(new ImageIcon(bi)));

    JFrame myframe = new JFrame();
    JPanel myPanel = new JPanel();
    gui.add(myPanel, BorderLayout.PAGE_END);
    myPanel.setLayout(new GridLayout(2, 0, 0, 0));

    int x = 0;//  w w  w .  jav a2s  .com
    int y = 5;

    for (char alphabet = 'A'; alphabet <= 'Z'; alphabet++) {
        myPanel.add(new JButton(alphabet + ""));
        x++;
        if (x > 15) {
            y = 6;
            x = 0;
        }
    }
    myframe.add(gui);
    myframe.pack();
    myframe.setVisible(true);

    myframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

---

From source file:Main.java

public static void main(String... args) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JPanel contentPane = new JPanel();
    contentPane.setLayout(new FlowLayout(FlowLayout.LEFT, 5, 5));
    JTextField tfield1 = new JTextField(10);
    JTextField tfield2 = new JTextField(10);

    FocusListener tfieldListener = new FocusListener() {
        @Override//w ww .j av a 2  s. c  o m
        public void focusGained(FocusEvent fe) {
        }

        @Override
        public void focusLost(FocusEvent fe) {
            String num1 = tfield1.getText().trim();
            String num2 = tfield2.getText().trim();
            if (num1 == null || num1.equals(""))
                num1 = "0";
            if (num2 == null || num2.equals(""))
                num2 = "0";
            System.out.println(Integer.toString(Integer.parseInt(num1) + Integer.parseInt(num2)));
        }
    };

    tfield1.addFocusListener(tfieldListener);
    tfield2.addFocusListener(tfieldListener);

    ((AbstractDocument) tfield1.getDocument()).setDocumentFilter(new MyDocumentFilter());
    ((AbstractDocument) tfield2.getDocument()).setDocumentFilter(new MyDocumentFilter());

    contentPane.add(tfield1);
    contentPane.add(tfield2);

    frame.setContentPane(contentPane);
    frame.pack();
    frame.setLocationByPlatform(true);
    frame.setVisible(true);
}

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From source file:BoxLayoutDemo.java

public static void main(String[] a) {
    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JPanel panel = new JPanel();
    LayoutManager layout = new BoxLayout(panel, BoxLayout.X_AXIS);
    panel.setLayout(layout);

    panel.add(new JLabel("a"));
    panel.add(new JLabel("b"));
    panel.add(new JLabel("c"));
    panel.add(new JLabel("d"));
    panel.add(new JLabel("e"));
    panel.add(new JLabel("f"));

    frame.add(panel);/*  w w  w . j  a  v  a  2  s  .  c  o  m*/

    frame.setSize(300, 200);
    frame.setVisible(true);
}

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From source file:Main.java

public static void main(String[] args) {

    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

    JPanel panel = new JPanel();
    Container c = frame.getContentPane();
    panel.setSize(100, 100);//from w  ww  .ja v  a2s  . c o m
    panel.setLayout(new GridLayout(1000, 1));
    for (int i = 0; i < 1000; i++)
        panel.add(new JLabel("JLabel " + i));

    JScrollPane jsp = new JScrollPane(panel);
    c.add(jsp);
    frame.setSize(100, 100);
    frame.setVisible(true);

}

---

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