学生管理系统(图形界面)——Java源代码:package exp10;import javax。swing。JFrame;public class MainClass {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubJFrame myFrame=new JFrame(”学生成绩管理系统”);myFrame。setLocation(300,100);//myFrame。setContentPane(new LoginPane(myFrame));myFrame。pack();myFrame。setVisible(true);}}package exp10;import java.sql。Connection;import java。sql。DriverManager;import java。sql。ResultSet;import java。sql。SQLException;import java。sql.Statement;public class DataBase {Connection conn=null;public Connection getConn(){return this.conn;}public void setConn(Connection conn){this。conn=conn;}public boolean getConnection(){String url=”jdbc : mysql : //localhost:3306/ScoreManagement?user=root&password=123”;try{Class。forName("org。gjt。mm。mysql.Driver”);conn=DriverManager.getConnection(url);return true;}catch(SQLException e){System。out。println(e。getMessage());return false;} catch (ClassNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();return false;}}public ResultSet executeQuery(String sql){ResultSet rs=null;Statement stmt=null;if(conn==null){this。getConnection();}try{stmt=conn.createStatement();rs=stmt。executeQuery(sql);return rs;}catch(SQLException e){return null;}}public int executeUpdate(String sql){Statement stmt=null;int linecount=0;if(conn==null){this。getConnection();}try{stmt=conn.createStatement();linecount=stmt。executeUpdate(sql);}catch(SQLException e){}return linecount;}}package exp10;import java.awt。event。ActionEvent;import java.awt。event.ActionListener;import java.sql。ResultSet;import java。sql。SQLException;import javax.swing。Box;import javax。swing.ButtonGroup;import javax.swing。JButton;import javax。swing。JFrame;import javax。swing.JLabel;import java...