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Using a GridBagLayout Manager

GridBagLayout is the most complex and most flexible of the layout managers. Elements are arranged in a rectangular grid. Elements can have different sizes and can occupy multiple rows or columns. The position and behavior of each element is specified by an instance of the GridBagConstraints class. import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import javax.swing.BorderFactory; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.border.Border; public class TryGridBagLayout {   static JFrame aWindow = new JFrame("This is a Gridbag Layout");   public static void main(String[] args) {     aWindow.setBounds(30, 30, 300, 300);     aWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);     GridBagLayout gridbag = new GridBagLayout();     GridBagConstraints constraints = new GridBagConstraints();     aWindow.getContentPane().setLayout(gridbag);     constraints.weightx = constraints.weighty = 10.0;     constraints.fill = constraints.BOTH;     addButton(" Press ", constraints, gridbag);     constraints.gridwidth = constraints.REMAINDER;     addButton("GO", constraints, gridbag);     aWindow.setVisible(true);   }   static void addButton(String label, GridBagConstraints constraints, GridBagLayout layout) {     Border edge = BorderFactory.createRaisedBevelBorder();     JButton button = new JButton(label);     button.setBorder(edge);     layout.setConstraints(button, constraints);     aWindow.getContentPane().add(button);   } }