Swing 示例 - 框佈局

類 BoxLayout 將元件以堆疊方式來排列，使其位於彼此的頂部或以行排列。 它提供了比 FlowLayout 更多的靈活性。 以下示例展示了 BoxLayout 的用法。

示例

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 Tester");
      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("One"));
      panel.add(new JButton("Two")); 
      panel.add(new JButton("Three"));
      panel.add(new JButton("Four"));         
      frame.getContentPane().add(panel, BorderLayout.CENTER);    
   }
}

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