primarykey.java

简单的学生管理系统

package catking.home.love;
import java.sql.*;
import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

public abstract class PrimaryKey extends JFrame implements ActionListener{
	protected JTextField tf;
	private final String[] buttonNames = {"确定","清除","退出"};
	
	public PrimaryKey(String title,String info)
	{
		super(title);
		this.setSize(600,450);
		Container c = this.getContentPane();
		this.setLayout(new GridLayout(3,1,0,0));
		c.add(new JLabel(""));
		JPanel panel = new JPanel();
		panel.setLayout(new GridLayout(3,1,0,5));
		JLabel infoLabel = new JLabel(info,SwingConstants.CENTER);
		tf = new JTextField(30);
		tf.setBackground(Color.WHITE);
		JPanel buttonPane = new JPanel();
		buttonPane.setLayout(new GridLayout(1,3,2,0));
		for(int i =0; i < buttonNames.length; ++i)
		{
			JButton button = new JButton(buttonNames[i]);
			button.addActionListener(this);
			buttonPane.add(button);
		}
		panel.add(infoLabel);
		panel.add(tf);
		panel.add(buttonPane);
		JPanel p = new JPanel();
		p.setLayout(new GridLayout(1,3,0,0));
		p.add(new JLabel(""));
		p.add(panel);
		p.add(new JLabel(""));
		c.add(p);
		c.add(new JLabel(""));
		this.setResizable(false);
		this.setVisible(true);
	}
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		int temp = -1;
		for(int i =0; i < buttonNames.length; ++i)
		{
			if(buttonNames[i].equals(e.getActionCommand()))
			{
				temp = i;
				break;
			}
		}
		switch(temp)
		{
		//确定
		case 0:
			isConfirm();
			break;
		//清除
		case 1:
			isClear();
			break;
		//退出
		case 2:
			isQuit();
			break;
		}
		
	}
	private void isClear()
	{
		tf.setText("");
		tf.repaint();
	}
	private void isQuit()
	{
		if(JOptionPane.showConfirmDialog(null, 
				"Are you sure to quit?", "Confirm",
				JOptionPane.YES_NO_CANCEL_OPTION, JOptionPane.INFORMATION_MESSAGE)
				== JOptionPane.YES_OPTION)
			this.dispose();
	}
	protected abstract void isConfirm();

}