QLSV.java

package mau;
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Checkbox;
import java.awt.CheckboxGroup;
import java.awt.Frame;
import java.awt.Label;
import java.awt.List;
import java.awt.Panel;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;

public class QLSV extends Frame implements ActionListener, ItemListener {

    public static void main(String[] args) {
        QLSV fr = new QLSV("Thieu Mao - KSEC");
        fr.setVisible(true);
        fr.setSize(430, 270);
        fr.setLocation(500, 200);
    }

    private List listStudent;
    private TextField tfName, tfPass, tfAddress;
    private CheckboxGroup cgGender;
    private Checkbox cbMale, cbFemale;
    private Button btAdd, btUpdate, btSave;
    private ArrayList<User> arrSV;

    @SuppressWarnings("empty-statement")
    public QLSV(String title) {
        super(title);
        this.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent we) {
                System.exit(0);
            }
        });

        this.setLayout(new BorderLayout());

        Panel pnTop = new Panel();
        Label lbTitle = new Label("Form Quản Lý Sinh Viên");
        pnTop.add(lbTitle);
        this.add(pnTop, BorderLayout.PAGE_START);

        Panel pnLeft = new Panel();
        listStudent = new List();
        pnLeft.add(listStudent);
        this.add(listStudent, BorderLayout.LINE_START);

        Panel pnCenter = new Panel();
        pnCenter.setLayout(null);

        Label lbName = new Label("Họ tên:");
        pnCenter.add(lbName).setBounds(20, 20, 70, 23);
        tfName = new TextField(30);
        pnCenter.add(tfName).setBounds(100, 20, 150, 23);

        Label lbPhone = new Label("Mật khẩu:");
        pnCenter.add(lbPhone).setBounds(20, 50, 70, 23);
        tfPass = new TextField(30);
        pnCenter.add(tfPass).setBounds(100, 50, 150, 23);

        Label lbAddress = new Label("Địa chỉ:");
        pnCenter.add(lbAddress).setBounds(20, 80, 70, 23);
        tfAddress = new TextField(30);
        pnCenter.add(tfAddress).setBounds(100, 80, 150, 23);

        Label lbGender = new Label("Giới tính:");
        pnCenter.add(lbGender).setBounds(20, 110, 70, 23);
        cgGender = new CheckboxGroup();
        cbMale = new Checkbox("Nam", cgGender, false);
        cbFemale = new Checkbox("Nữ", cgGender, false);
        pnCenter.add(cbMale).setBounds(100, 110, 45, 23);
        pnCenter.add(cbFemale).setBounds(160, 110, 45, 23);

        btAdd = new Button("Add");
        pnCenter.add(btAdd).setBounds(20, 150, 60, 23);
        btAdd.addActionListener(this);

        btUpdate = new Button("Update");
        pnCenter.add(btUpdate).setBounds(105, 150, 60, 23);
        btUpdate.addActionListener(this);

        btSave = new Button("Save");
        pnCenter.add(btSave).setBounds(185, 150, 60, 23);
        btSave.addActionListener(this);

        this.add(pnCenter, BorderLayout.CENTER);

        arrSV = new ArrayList<User>();

        listStudent.addItemListener(this);

        try {
            User test = new User();
            // System.out.println("the values are : " + t1);
            FileInputStream fis = new FileInputStream("thieumao.txt");
            ObjectInputStream in1 = new ObjectInputStream(fis);
            do {
                test = (User) in1.readObject();
                listStudent.add(test.name);
                arrSV.add(new User(test.name, test.pass, test.address,
                        test.male, test.female));
            } while (test != null);
            in1.close();
        } catch (Exception e) {
            System.out.println("Error - Open");
        }

    }

    @Override
    public void actionPerformed(ActionEvent e) {
        // code here
        if (e.getSource() == btAdd) {
            listStudent.add(tfName.getText());
            arrSV.add(new User(tfName.getText(), tfPass.getText(), tfAddress
                    .getText(), cbMale.getState(), cbFemale.getState()));
        }

        if (e.getSource() == btUpdate) {
            int i = listStudent.getSelectedIndex();
            User us = (User) arrSV.get(i);
            us.name = tfName.getText();
            us.pass = tfPass.getText();
            us.address = tfAddress.getText();
            us.male = cbMale.getState();
            us.female = cbFemale.getState();
            listStudent.remove(i);
            listStudent.add(tfName.getText(), i);
        }

        if (e.getSource() == btSave) {
            System.out.println("Save");
            try {
                FileOutputStream fos = new FileOutputStream("thieumao.txt");
                ObjectOutputStream out1 = new ObjectOutputStream(fos);
                for (int i = 0; i < arrSV.size(); i++) {
                    User us = (User) arrSV.get(i);
                    out1.writeObject(us);
                }
                out1.flush();
                out1.close();
            } catch (Exception ee) {
                System.out.println("Error");
            }
        }
    }

    @Override
    public void itemStateChanged(ItemEvent e) {
        User us = (User) arrSV.get(listStudent.getSelectedIndex());
        tfName.setText(us.name);
        tfPass.setText(us.pass);
        tfAddress.setText(us.address);
        cbMale.setState(us.male);
        cbFemale.setState(us.female);
    }
}

class User implements Serializable {

    public String name, pass, address;
    public Boolean male, female;

    public User() {
    }

    public User(String name, String pass, String address, Boolean male,
            Boolean female) {
        this.name = name;
        this.pass = pass;
        this.address = address;
        this.male = male;
        this.female = female;
    }
}