学生信息管理软件工程(14)

class GM extends JFrame implements ActionListener {xecuteQuery("select * from sc,c where =");

} else {

rs = stmt

.executeQuery("select * from sc,c where = and sno='"

+ mxh + "'");

}

while () && j1 <= row) {

kch = ("sno");

kcm = ("cn");

xxkch = ("g");

j1++;

}

} catch (SQLException e) {

();

}

GAdd gadd = new GAdd();

("修改成绩");

();

}

}

public void select() {xecuteQuery("select * from sc,c where = and sno='"

+ mxh + "'");

while ()) {

playerInfo[j][0] = ("sno");

playerInfo[j][1] = ("cn");

playerInfo[j][2] = ("g");

j++;

}

} catch (SQLException e) {

();

}

if (playerInfo[0][1] == null) {

();

(null, "学号不存在！");

new GM("成绩信息管理").display();

} else {

sTable = new JTable(playerInfo, columnNames);

(sTable);

scroll = new JScrollPane(sTable);

(scroll);

}

}

public void actionPerformed(ActionEvent e) {

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