181day（组合框示例代码）

《2018年4月9日》【连续181天】

标题：组合框示例代码；
内容：

public class ComboBoxFrame extends JFrame
 {
	 private JComboBox<String> faceCombo;
	 private JLabel label;
	 private static final int DEFAULT_SIZE = 24;
	public ComboBoxFrame()
	{
		label = new JLabel ("The quick brown fox jumps over the lazy dog.");
		label.setFont(new Font("Serif", Font.PLAIN, DEFAULT_SIZE));
		add(label, BorderLayout.CENTER) ;
		faceCombo = new JComboBox<>();
		faceCombo.addItem("Serif") ;
		faceCombo.addItem("SansSerif");
		faceCombo.addItem("Monospaced") ;
		faceCombo.addItem("Dialog") ;
		faceCombo.addItem("Dialoglnput");
		faceCombo.addActionListener(event ->
		label .setFont(
		new Font (faceCombo.getItemAt(faceCombo.getSelectedIndex()) ,
		Font.PLAIN, DEFAULT_SIZE)));
		JPanel comboPanel = new JPanel () ;
		comboPanel.add(faceCombo);
		add(comboPanel, BorderLayout.SOUTH) ;
		pack();
	}
	public static void main(String[] args)
	{
		EventQueue.invokeLater(()->
		{
		JFrame frame =new ComboBoxFrame();
		frame.setTitle("ComboBox");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
		}
				);
	}

}