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    <p>Using various <code>LayoutManagers</code> one can provide spacing between various components. </p> <h2> 1.) BorderLayout :</h2> <ul> <li><strong>Overloaded Constructor :</strong> <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/BorderLayout.html#BorderLayout%28int,%20int%29">BorderLayout(int horizontalGap, int verticalGap)</a></li> <li><p><strong>Getter and setter methods</strong></p> <p>For Horizontal Spacing <strong>:</strong> <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/BorderLayout.html#getHgap%28%29">BorderLayout.getHgap()</a> and <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/BorderLayout.html#setHgap%28int%29">BorderLayout.setHgap(int hgap)</a></p> <p>For Vertical Spacing <strong>:</strong> <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/BorderLayout.html#getVgap%28%29">BorderLayout.getVgap()</a> and <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/BorderLayout.html#setVgap%28int%29">BorderLayout.setVgap()</a></p></li> </ul> <h2> 2.) FlowLayout :</h2> <ul> <li><strong>Overloaded Constructor :</strong> <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/FlowLayout.html#FlowLayout%28int,%20int,%20int%29">FlowLayout(int align, int hgap, int vgap)</a></li> <li><p><strong>Getter and setter methods</strong></p> <p>For Horizontal Spacing <strong>:</strong> <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/FlowLayout.html#getHgap%28%29">FlowLayout.getHgap()</a> and <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/FlowLayout.html#setHgap%28int%29">FlowLayout.setHgap(int hgap)</a></p> <p>For Vertical Spacing <strong>:</strong> <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/FlowLayout.html#getVgap()">FlowLayout.getVgap()</a> and <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/FlowLayout.html#setVgap(int)">FlowLayout.setVgap()</a></p></li> </ul> <h2> 3.) GridLayout :</h2> <ul> <li><strong>Overloaded Constructor :</strong> <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/GridLayout.html#GridLayout%28int,%20int,%20int,%20int%29">GridLayout(int rows, int columns, int hgap, int vgap)</a></li> <li><p><strong>Getter and setter methods</strong></p> <p>For Horizontal Spacing <strong>:</strong> <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/GridLayout.html#getHgap()">GridLayout.getHgap()</a> and <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/GridLayout.html#setHgap(int)">GridLayout.setHgap(int hgap)</a></p> <p>For Vertical Spacing <strong>:</strong> <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/GridLayout.html#getVgap()">GridLayout.getVgap()</a> and <a href="http://docs.oracle.com/javase/7/docs/api/java/awt/GridLayout.html#setVgap(int)">GridLayout.setVgap()</a></p></li> </ul> <h2> 4.) GridBagLayout :</h2> <p><a href="http://docs.oracle.com/javase/7/docs/api/java/awt/GridBagConstraints.html#insets">GridBagConstraints.insets</a></p> <h2> 5.) CardLayout (<a href="http://docs.oracle.com/javase/7/docs/api/java/awt/GridLayout.html#setHgap(int)">example</a>) :</h2> <p><a href="http://docs.oracle.com/javase/7/docs/api/java/awt/GridLayout.html#getVgap()">CardLayout(int hGap, int vGap)</a></p> <h2>Example to display all constructors in action :</h2> <pre><code>import java.awt.*; import java.awt.event.*; import javax.swing.*; public class LayoutExample { private final int hGap = 5; private final int vGap = 5; private String[] borderConstraints = { BorderLayout.PAGE_START, BorderLayout.LINE_START, BorderLayout.CENTER, BorderLayout.LINE_END, BorderLayout.PAGE_END }; private JButton[] buttons; private GridBagConstraints gbc; private JPanel borderPanel; private JPanel flowPanel; private JPanel gridPanel; private JPanel gridBagPanel; private JPanel cardPanel; public LayoutExample() { buttons = new JButton[16]; gbc = new GridBagConstraints(); gbc.anchor = GridBagConstraints.FIRST_LINE_START; gbc.insets = new Insets(hGap, vGap, hGap, vGap); } private void displayGUI() { 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); borderPanel.setBackground(Color.WHITE); for (int i = 0; i &lt; 5; i++) { buttons[i] = new JButton(borderConstraints[i]); borderPanel.add(buttons[i], borderConstraints[i]); } contentPane.add(borderPanel); flowPanel = new JPanel(new FlowLayout( FlowLayout.CENTER, hGap, vGap)); flowPanel.setBorder( BorderFactory.createTitledBorder("FlowLayout")); flowPanel.setOpaque(true); flowPanel.setBackground(Color.WHITE); for (int i = 5; i &lt; 8; i++) { buttons[i] = new JButton(Integer.toString(i)); flowPanel.add(buttons[i]); } contentPane.add(flowPanel); gridPanel = new JPanel(new GridLayout(2, 2, hGap, vGap)); gridPanel.setBorder( BorderFactory.createTitledBorder("GridLayout")); gridPanel.setOpaque(true); gridPanel.setBackground(Color.WHITE); for (int i = 8; i &lt; 12; i++) { buttons[i] = new JButton(Integer.toString(i)); gridPanel.add(buttons[i]); } contentPane.add(gridPanel); gridBagPanel = new JPanel(new GridBagLayout()); gridBagPanel.setBorder( BorderFactory.createTitledBorder("GridBagLayout")); gridBagPanel.setOpaque(true); gridBagPanel.setBackground(Color.WHITE); buttons[12] = new JButton(Integer.toString(12)); addComp(gridBagPanel, buttons[12], 0, 0, 1, 1 , GridBagConstraints.BOTH, 0.33, 0.5); buttons[13] = new JButton(Integer.toString(13)); addComp(gridBagPanel, buttons[13], 1, 0, 1, 1 , GridBagConstraints.BOTH, 0.33, 0.5); buttons[14] = new JButton(Integer.toString(14)); addComp(gridBagPanel, buttons[14], 0, 1, 2, 1 , GridBagConstraints.BOTH, 0.66, 0.5); buttons[15] = new JButton(Integer.toString(15)); addComp(gridBagPanel, buttons[15], 2, 0, 1, 2 , GridBagConstraints.BOTH, 0.33, 1.0); contentPane.add(gridBagPanel); cardPanel = new JPanel(new CardLayout(hGap, vGap)); cardPanel.setBorder( BorderFactory.createTitledBorder("CardLayout")); cardPanel.setOpaque(true); cardPanel.setBackground(Color.WHITE); cardPanel.add(getPanel(Color.BLUE)); cardPanel.add(getPanel(Color.GREEN)); contentPane.add(cardPanel); frame.setContentPane(contentPane); frame.pack(); frame.setLocationByPlatform(true); frame.setVisible(true); } private JPanel getPanel(Color bColor) { JPanel panel = new JPanel(new FlowLayout( FlowLayout.CENTER, hGap, vGap)); panel.setOpaque(true); panel.setBackground(bColor.darker().darker()); JButton swapperButton = new JButton("Next"); swapperButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent ae) { CardLayout cardLayout = (CardLayout) cardPanel.getLayout(); cardLayout.next(cardPanel); } }); panel.add(swapperButton); return panel; } private void addComp(JPanel panel, JComponent comp , int x, int y, int gWidth , int gHeight, int fill , double weightx, double weighty) { gbc.gridx = x; gbc.gridy = y; gbc.gridwidth = gWidth; gbc.gridheight = gHeight; gbc.fill = fill; gbc.weightx = weightx; gbc.weighty = weighty; panel.add(comp, gbc); } public static void main(String[] args) { Runnable runnable = new Runnable(){ @Override public void run() { new LayoutExample().displayGUI(); } }; EventQueue.invokeLater(runnable); } } </code></pre> <h2>OUTPUT :</h2> <p><img src="https://i.stack.imgur.com/9mKG9.png" alt="LAYOUTIMAGE"></p>
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    1. CO+1 I luuuuuv me some GridBagConstraints insets. We use GBL a lot, so I wrote some helper classes that do the dirty work for me so that the GBL code is quite terse and readable. Like the sample does here, I use a default Insets so that I don't have to type it in everytime, and the resultant look is a more "relaxed" layout.
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