Java.awt.event.* import;
Javax.swing.* import;
Class TeachSearchInfo extends JPanel implements ActionListener {public
/ / create prompt tag array
JLabel[] jlArray new = {JLabel private ("school number:"), JLabel new ("secret code:")};
/ / create labels
Private JLabel JL = new JLabel ("please enter a number:");
/ / create for text input box control number
JTextField JTF new = JTextField private ();
/ / create a query button
JButton JB private = JButton new ("query");
/ / create for display tag array information
JLabel[] jlArray2 new = JLabel[2] private;
The statement quoted GetStuInfo / /
GetStuInfo getsI private;

/ / constructor
TeachSearchInfo public () {

/ / initialization interface
This.initialFrame ();
}



/ / initialization method of interface
Public void (initialFrame) {// will add controls to the container
This.setLayout (null);

Jl.setBounds (30, 20, 250, 30);
This.add (JL);
Jtf.setBounds (115, 20, 150, 30);
This.add (JTF);
Jtf.addActionListener (this);
Jb.setBounds (280, 20, 80, 30);
This.add (JB);
Jb.addActionListener (this);

}

The actionPerformed / ActionListener interface (method)
Void actionPerformed public (E ActionEvent) {

If (e.getSource) (e.getSource) (|| = = JB = = JTF) {// query processing code button press
Get input number / /
Stu_id String = jtf.getText ();
If (stu_id.equals ("")) {// number is empty
JOptionPane.showMessageDialog (this, "please enter the student number", "error",
JOptionPane.ERROR_MESSAGE);
Return;
The basic information of else {//} method calls GetStuInfo to obtain the specified students
Baseinfo String[] = getsi.getBaseInfo (stu_id);
If (baseinfo[0] = null) {// if baseinfo[0]==null, indicates that none of the students
JOptionPane.showMessageDialog (this, "without the student", "wrong"",
JOptionPane.ERROR_MESSAGE);
Return;
Else {//} update all control interface display
This.removeAll ();
For (I int = 0; I < 2; i++) {
JlArray2[i] = JLabel new (baseinfo[i]);
}
Jl.setBounds (30, 20, 150, 30);
This.add (JL);
Jtf.setBounds (115, 20, 150, 30);
This.add (JTF);
Jb.setBounds (280, 20, 80, 30);
This.add (JB);

JlArray[0].setBounds (30, 100, 100, 30);
This.add (jlArray[0]);
JlArray[1].setBounds (30, 150, 100, 30);
This.add (jlArray[1]);

JlArray2[0].setBounds (130, 100, 150, 30);
This.add (jlArray2[0]);
JlArray2[1].setBounds (130, 150, 150, 30);
This.add (jlArray2[1]);

This.repaint ();
}

}
}

}

Void setFocus public () {
This.jtf.requestFocus (true);
}
}