Swing的BoxLayout範例

BoxLayout類以堆疊方式排列元件，使它們彼此疊加或排成行。它提供了FlowLayout的靈活性。下面的例子展示了BoxLayout的用法。

範例

import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.LayoutManager;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JSeparator;
import javax.swing.ListCellRenderer;
import javax.swing.ListSelectionModel;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

public class SwingTester {
   public static void main(String[] args) {
      createWindow();
   }

   private static void createWindow() {    
      JFrame frame = new JFrame("Swing BoxLayout布局(範例)");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      createUI(frame);
      frame.setSize(560, 200);      
      frame.setLocationRelativeTo(null);  
      frame.setVisible(true);
   }

   private static void createUI(final JFrame frame){  
      JPanel panel = new JPanel();
      LayoutManager layout = new BoxLayout(panel, BoxLayout.PAGE_AXIS);  
      panel.setLayout(layout);       

      panel.add(new JButton("Java"));
      panel.add(new JButton("Python")); 
      panel.add(new JButton("MySQL"));
      panel.add(new JButton("Oracle"));         
      frame.getContentPane().add(panel, BorderLayout.CENTER);    
   }
}

執行上面範例程式碼，得到以下結果：