firstwindow.java

使用java连接server sql 2000 的一个小作业

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;

public class FirstWindow extends JWindow implements ActionListener
{
    JLabel back=new JLabel(new ImageIcon("first.JPG"));
    JProgressBar progressBar=new JProgressBar(1,100);
    Timer timer;
    int n=20;
    
    //////////////////
    String sql; 
    Connection conn; 
    Statement stmt;
    
    public FirstWindow(){
        setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
        progressBar.setStringPainted(true);
        progressBar.setString("启动中。。。");
        getContentPane().add(back,"Center");
        getContentPane().add(progressBar,"South");
        setSize(497,399);
        toFront();
        Dimension screen=Toolkit.getDefaultToolkit().getScreenSize();
        setLocation((screen.width-600)/2,(screen.height-600)/2);
        
        setVisible(true);
        timer=new javax.swing.Timer(100,this);
        timer.addActionListener(this);
        timer.start();
        
        
    }
    public void actionPerformed(ActionEvent e){
        if(--n>0){
            progressBar.setValue(100-n);
            timer.restart();
        }
        else {
            try{
                Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); 
                String url="jdbc:odbc:SUMMIT";
                String user="sa"; 
                String password="198662"; 
                conn=DriverManager.getConnection(url,user,password);
                conn.close();
            }
            catch(Exception ee){
                JOptionPane.showMessageDialog(null,ee.getMessage());
               System.exit(0);}
             timer.stop();
             dispose();
             LoginDia LD=new LoginDia();
           
        }
    }
}