By GokiSoft.com| 15:27 14/11/2022|
Java Advanced

[Source Code] Quản lý sinh viên & đa ngôn ngữ - C2109I

#message_vi_VN.properties


# Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
# Click nbfs://nbhost/SystemFileSystem/Templates/Other/properties.properties to edit this template

msg_input_student = 1. Nhap thong tin sinh vien
msg_display_student = 2. Hien thi thong tin sinh vien
msg_exit = 3. Thoat
msg_choose = Chon: 

#message.properties


# Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
# Click nbfs://nbhost/SystemFileSystem/Templates/Other/properties.properties to edit this template

msg_input_student = 1. Nhap thong tin sinh vien
msg_display_student = 2. Hien thi thong tin sinh vien
msg_exit = 3. Thoat
msg_choose = Chon: 

#Student.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package java2.lesson07;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author diepvan
 */
public class Student {
    int id, age;
    String fullname, gender, email, address;

    public Student() {
    }

    public Student(int id, int age, String fullname, String gender, String email, String address) {
        this.id = id;
        this.age = age;
        this.fullname = fullname;
        this.gender = gender;
        this.email = email;
        this.address = address;
    }
    
    public void setData(ResultSet resultSet) {
        try {
            this.id = resultSet.getInt("id");
            this.age = resultSet.getInt("age");
            this.fullname = resultSet.getString("fullname");
            this.gender = resultSet.getString("gender");
            this.email = resultSet.getString("email");
            this.address = resultSet.getString("address");
        } catch (SQLException ex) {
            Logger.getLogger(Student.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getFullname() {
        return fullname;
    }

    public void setFullname(String fullname) {
        this.fullname = fullname;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }
    
    
}

#StudentDAO.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package java2.lesson07;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author diepvan
 */
public class StudentDAO {

    static Connection con = null;
    static PreparedStatement statement = null;

    private static void openConnection() {
        // TODO add your handling code here:
        try {
            con = DriverManager.getConnection("jdbc:mysql://localhost:3306/C2109I", "root", "");
        } catch (SQLException e) {
        }
    }

    private static void closeConnection() {
        //B3. Dong ket noi
        if (statement != null) {
            try {
                statement.close();
            } catch (SQLException ex) {
                Logger.getLogger(StudentDAO.class.getName()).log(Level.SEVERE, null, ex);
            }
        }

        if (con != null) {
            try {
                con.close();
            } catch (SQLException ex) {
                Logger.getLogger(StudentDAO.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
        
        statement = null;
        con = null;
    }

    public static List<Student> list(String s) {
        List<Student> dataList = new ArrayList<>();

        openConnection();

        //B2. Thuc hien truy van
        try {
            String sql = "select * from Students";
            if(s != null && !s.isEmpty()) {
                sql += " where fullname like ?";
            }
            
            statement = con.prepareStatement(sql);
            
            if(s != null && !s.isEmpty()) {
                statement.setString(1, "%" + s + "%");
            }
            
            ResultSet resultSet = statement.executeQuery();

            while (resultSet.next()) {
                Student std = new Student();
                std.setData(resultSet);

                dataList.add(std);
            }

        } catch (SQLException ex) {
            Logger.getLogger(StudentDAO.class.getName()).log(Level.SEVERE, null, ex);
        }

        closeConnection();

        return dataList;
    }
    
    public static void insert(Student std) {
        openConnection();
        
        String sql = "insert into Students(fullname, gender, age, email, address)"
                + " values (?, ?, ?, ?, ?)";
        
        try {
            statement = con.prepareStatement(sql);
            statement.setString(1, std.getFullname());
            statement.setString(2, std.getGender());
            statement.setInt(3, std.getAge());
            statement.setString(4, std.getEmail());
            statement.setString(5, std.getAddress());
            
            statement.execute();
        } catch (SQLException ex) {
            Logger.getLogger(StudentDAO.class.getName()).log(Level.SEVERE, null, ex);
        }
        
        closeConnection();
    }
    
    public static void update(Student std) {
        openConnection();
        
        String sql = "update Students set fullname = ?, gender = ?, age = ?, email = ?, address = ? where id = ?";
        
        try {
            statement = con.prepareStatement(sql);
            statement.setString(1, std.getFullname());
            statement.setString(2, std.getGender());
            statement.setInt(3, std.getAge());
            statement.setString(4, std.getEmail());
            statement.setString(5, std.getAddress());
            statement.setInt(6, std.getId());
            
            statement.execute();
        } catch (SQLException ex) {
            Logger.getLogger(StudentDAO.class.getName()).log(Level.SEVERE, null, ex);
        }
        
        closeConnection();
    }
    
    public static void delete(int id) {
        openConnection();
        
        String sql = "delete from Students where id = ?";
        
        try {
            statement = con.prepareStatement(sql);
            statement.setInt(1, id);
            
            statement.execute();
        } catch (SQLException ex) {
            Logger.getLogger(StudentDAO.class.getName()).log(Level.SEVERE, null, ex);
        }
        
        closeConnection();
    }
}

#StudentFrame.form

<?xml version="1.0" encoding="UTF-8" ?>

<Form version="1.3" maxVersion="1.9" type="org.netbeans.modules.form.forminfo.JFrameFormInfo">
  <Properties>
    <Property name="defaultCloseOperation" type="int" value="3"/>
  </Properties>
  <SyntheticProperties>
    <SyntheticProperty name="formSizePolicy" type="int" value="1"/>
    <SyntheticProperty name="generateCenter" type="boolean" value="false"/>
  </SyntheticProperties>
  <AuxValues>
    <AuxValue name="FormSettings_autoResourcing" type="java.lang.Integer" value="0"/>
    <AuxValue name="FormSettings_autoSetComponentName" type="java.lang.Boolean" value="false"/>
    <AuxValue name="FormSettings_generateFQN" type="java.lang.Boolean" value="true"/>
    <AuxValue name="FormSettings_generateMnemonicsCode" type="java.lang.Boolean" value="false"/>
    <AuxValue name="FormSettings_i18nAutoMode" type="java.lang.Boolean" value="false"/>
    <AuxValue name="FormSettings_layoutCodeTarget" type="java.lang.Integer" value="1"/>
    <AuxValue name="FormSettings_listenerGenerationStyle" type="java.lang.Integer" value="0"/>
    <AuxValue name="FormSettings_variablesLocal" type="java.lang.Boolean" value="false"/>
    <AuxValue name="FormSettings_variablesModifier" type="java.lang.Integer" value="2"/>
  </AuxValues>

  <Layout>
    <DimensionLayout dim="0">
      <Group type="103" groupAlignment="0" attributes="0">
          <Group type="102" alignment="0" attributes="0">
              <EmptySpace max="-2" attributes="0"/>
              <Group type="103" groupAlignment="1" max="-2" attributes="0">
                  <Component id="jScrollPane1" max="32767" attributes="0"/>
                  <Component id="jPanel1" max="32767" attributes="0"/>
              </Group>
              <EmptySpace max="32767" attributes="0"/>
          </Group>
      </Group>
    </DimensionLayout>
    <DimensionLayout dim="1">
      <Group type="103" groupAlignment="0" attributes="0">
          <Group type="102" alignment="0" attributes="0">
              <EmptySpace max="-2" attributes="0"/>
              <Component id="jPanel1" min="-2" max="-2" attributes="0"/>
              <EmptySpace type="unrelated" max="-2" attributes="0"/>
              <Component id="jScrollPane1" min="-2" pref="233" max="-2" attributes="0"/>
              <EmptySpace max="32767" attributes="0"/>
          </Group>
      </Group>
    </DimensionLayout>
  </Layout>
  <SubComponents>
    <Container class="javax.swing.JPanel" name="jPanel1">
      <Properties>
        <Property name="border" type="javax.swing.border.Border" editor="org.netbeans.modules.form.editors2.BorderEditor">
          <Border info="org.netbeans.modules.form.compat2.border.TitledBorderInfo">
            <TitledBorder title="NHAP THONG TIN SINH VIEN"/>
          </Border>
        </Property>
      </Properties>

      <Layout>
        <DimensionLayout dim="0">
          <Group type="103" groupAlignment="0" attributes="0">
              <Group type="102" alignment="0" attributes="0">
                  <EmptySpace min="-2" pref="26" max="-2" attributes="0"/>
                  <Group type="103" groupAlignment="0" attributes="0">
                      <Component id="jLabel4" alignment="0" min="-2" max="-2" attributes="0"/>
                      <Group type="102" alignment="0" attributes="0">
                          <Group type="103" groupAlignment="0" attributes="0">
                              <Component id="jLabel1" min="-2" max="-2" attributes="0"/>
                              <Component id="jLabel2" alignment="0" min="-2" max="-2" attributes="0"/>
                              <Component id="jLabel3" alignment="0" min="-2" max="-2" attributes="0"/>
                              <Component id="jLabel5" alignment="0" min="-2" max="-2" attributes="0"/>
                          </Group>
                          <EmptySpace min="-2" pref="36" max="-2" attributes="0"/>
                          <Group type="103" groupAlignment="0" attributes="0">
                              <Component id="txtAddress" min="-2" pref="430" max="-2" attributes="0"/>
                              <Component id="txtAge" min="-2" pref="430" max="-2" attributes="0"/>
                              <Component id="cbGender" min="-2" max="-2" attributes="0"/>
                              <Component id="txtFullname" min="-2" pref="430" max="-2" attributes="0"/>
                              <Component id="txtEmail" alignment="0" min="-2" pref="430" max="-2" attributes="0"/>
                              <Group type="102" alignment="0" attributes="0">
                                  <Component id="btnSave" min="-2" max="-2" attributes="0"/>
                                  <EmptySpace type="unrelated" max="-2" attributes="0"/>
                                  <Component id="btnReset" min="-2" max="-2" attributes="0"/>
                                  <EmptySpace type="unrelated" max="-2" attributes="0"/>
                                  <Component id="btnDelete" min="-2" max="-2" attributes="0"/>
                                  <EmptySpace type="unrelated" max="-2" attributes="0"/>
                                  <Component id="btnFind" min="-2" max="-2" attributes="0"/>
                              </Group>
                          </Group>
                      </Group>
                  </Group>
                  <EmptySpace pref="20" max="32767" attributes="0"/>
              </Group>
          </Group>
        </DimensionLayout>
        <DimensionLayout dim="1">
          <Group type="103" groupAlignment="0" attributes="0">
              <Group type="102" alignment="0" attributes="0">
                  <EmptySpace min="-2" pref="18" max="-2" attributes="0"/>
                  <Group type="103" groupAlignment="3" attributes="0">
                      <Component id="jLabel1" alignment="3" min="-2" max="-2" attributes="0"/>
                      <Component id="txtFullname" alignment="3" min="-2" max="-2" attributes="0"/>
                  </Group>
                  <EmptySpace type="unrelated" max="-2" attributes="0"/>
                  <Group type="103" groupAlignment="3" attributes="0">
                      <Component id="cbGender" alignment="3" min="-2" max="-2" attributes="0"/>
                      <Component id="jLabel2" alignment="3" min="-2" max="-2" attributes="0"/>
                  </Group>
                  <EmptySpace type="unrelated" max="-2" attributes="0"/>
                  <Group type="103" groupAlignment="3" attributes="0">
                      <Component id="jLabel3" alignment="3" min="-2" max="-2" attributes="0"/>
                      <Component id="txtAge" alignment="3" min="-2" max="-2" attributes="0"/>
                  </Group>
                  <EmptySpace min="-2" pref="9" max="-2" attributes="0"/>
                  <Group type="103" groupAlignment="3" attributes="0">
                      <Component id="jLabel4" alignment="3" min="-2" max="-2" attributes="0"/>
                      <Component id="txtEmail" alignment="3" min="-2" max="-2" attributes="0"/>
                  </Group>
                  <EmptySpace type="separate" max="-2" attributes="0"/>
                  <Group type="103" groupAlignment="3" attributes="0">
                      <Component id="jLabel5" alignment="3" min="-2" max="-2" attributes="0"/>
                      <Component id="txtAddress" alignment="3" min="-2" max="-2" attributes="0"/>
                  </Group>
                  <EmptySpace type="separate" max="-2" attributes="0"/>
                  <Group type="103" groupAlignment="3" attributes="0">
                      <Component id="btnSave" alignment="3" min="-2" max="-2" attributes="0"/>
                      <Component id="btnReset" alignment="3" min="-2" max="-2" attributes="0"/>
                      <Component id="btnDelete" alignment="3" min="-2" max="-2" attributes="0"/>
                      <Component id="btnFind" alignment="3" min="-2" max="-2" attributes="0"/>
                  </Group>
                  <EmptySpace max="32767" attributes="0"/>
              </Group>
          </Group>
        </DimensionLayout>
      </Layout>
      <SubComponents>
        <Component class="javax.swing.JLabel" name="jLabel1">
          <Properties>
            <Property name="text" type="java.lang.String" value="Fullname:"/>
          </Properties>
        </Component>
        <Component class="javax.swing.JTextField" name="txtFullname">
        </Component>
        <Component class="javax.swing.JLabel" name="jLabel2">
          <Properties>
            <Property name="text" type="java.lang.String" value="Gender:"/>
          </Properties>
        </Component>
        <Component class="javax.swing.JTextField" name="txtAge">
        </Component>
        <Component class="javax.swing.JLabel" name="jLabel3">
          <Properties>
            <Property name="text" type="java.lang.String" value="Age:"/>
          </Properties>
        </Component>
        <Component class="javax.swing.JTextField" name="txtEmail">
        </Component>
        <Component class="javax.swing.JLabel" name="jLabel4">
          <Properties>
            <Property name="text" type="java.lang.String" value="Email:"/>
          </Properties>
        </Component>
        <Component class="javax.swing.JTextField" name="txtAddress">
        </Component>
        <Component class="javax.swing.JLabel" name="jLabel5">
          <Properties>
            <Property name="text" type="java.lang.String" value="Address:"/>
          </Properties>
        </Component>
        <Component class="javax.swing.JComboBox" name="cbGender">
          <Properties>
            <Property name="model" type="javax.swing.ComboBoxModel" editor="org.netbeans.modules.form.editors2.ComboBoxModelEditor">
              <StringArray count="3">
                <StringItem index="0" value="Nam"/>
                <StringItem index="1" value="Nu"/>
                <StringItem index="2" value="Other"/>
              </StringArray>
            </Property>
          </Properties>
          <AuxValues>
            <AuxValue name="JavaCodeGenerator_TypeParameters" type="java.lang.String" value="&lt;String&gt;"/>
          </AuxValues>
        </Component>
        <Component class="javax.swing.JButton" name="btnSave">
          <Properties>
            <Property name="text" type="java.lang.String" value="Save"/>
          </Properties>
          <Events>
            <EventHandler event="actionPerformed" listener="java.awt.event.ActionListener" parameters="java.awt.event.ActionEvent" handler="btnSaveActionPerformed"/>
          </Events>
        </Component>
        <Component class="javax.swing.JButton" name="btnReset">
          <Properties>
            <Property name="text" type="java.lang.String" value="Reset"/>
          </Properties>
          <Events>
            <EventHandler event="actionPerformed" listener="java.awt.event.ActionListener" parameters="java.awt.event.ActionEvent" handler="btnResetActionPerformed"/>
          </Events>
        </Component>
        <Component class="javax.swing.JButton" name="btnDelete">
          <Properties>
            <Property name="text" type="java.lang.String" value="Delete"/>
          </Properties>
          <Events>
            <EventHandler event="actionPerformed" listener="java.awt.event.ActionListener" parameters="java.awt.event.ActionEvent" handler="btnDeleteActionPerformed"/>
          </Events>
        </Component>
        <Component class="javax.swing.JButton" name="btnFind">
          <Properties>
            <Property name="text" type="java.lang.String" value="Find"/>
          </Properties>
          <Events>
            <EventHandler event="actionPerformed" listener="java.awt.event.ActionListener" parameters="java.awt.event.ActionEvent" handler="btnFindActionPerformed"/>
          </Events>
        </Component>
      </SubComponents>
    </Container>
    <Container class="javax.swing.JScrollPane" name="jScrollPane1">
      <AuxValues>
        <AuxValue name="autoScrollPane" type="java.lang.Boolean" value="true"/>
      </AuxValues>

      <Layout class="org.netbeans.modules.form.compat2.layouts.support.JScrollPaneSupportLayout"/>
      <SubComponents>
        <Component class="javax.swing.JTable" name="tblStudent">
          <Properties>
            <Property name="model" type="javax.swing.table.TableModel" editor="org.netbeans.modules.form.editors2.TableModelEditor">
              <Table columnCount="6" rowCount="0">
                <Column editable="false" title="No" type="java.lang.Object"/>
                <Column editable="false" title="FullName" type="java.lang.Object"/>
                <Column editable="false" title="Gender" type="java.lang.Object"/>
                <Column editable="false" title="Age" type="java.lang.Object"/>
                <Column editable="false" title="Email" type="java.lang.Object"/>
                <Column editable="false" title="Address" type="java.lang.Object"/>
              </Table>
            </Property>
            <Property name="columnModel" type="javax.swing.table.TableColumnModel" editor="org.netbeans.modules.form.editors2.TableColumnModelEditor">
              <TableColumnModel selectionModel="0">
                <Column maxWidth="-1" minWidth="-1" prefWidth="-1" resizable="false">
                  <Title/>
                  <Editor/>
                  <Renderer/>
                </Column>
                <Column maxWidth="-1" minWidth="-1" prefWidth="-1" resizable="false">
                  <Title/>
                  <Editor/>
                  <Renderer/>
                </Column>
                <Column maxWidth="-1" minWidth="-1" prefWidth="-1" resizable="false">
                  <Title/>
                  <Editor/>
                  <Renderer/>
                </Column>
                <Column maxWidth="-1" minWidth="-1" prefWidth="-1" resizable="false">
                  <Title/>
                  <Editor/>
                  <Renderer/>
                </Column>
                <Column maxWidth="-1" minWidth="-1" prefWidth="-1" resizable="false">
                  <Title/>
                  <Editor/>
                  <Renderer/>
                </Column>
                <Column maxWidth="-1" minWidth="-1" prefWidth="-1" resizable="false">
                  <Title/>
                  <Editor/>
                  <Renderer/>
                </Column>
              </TableColumnModel>
            </Property>
            <Property name="tableHeader" type="javax.swing.table.JTableHeader" editor="org.netbeans.modules.form.editors2.JTableHeaderEditor">
              <TableHeader reorderingAllowed="true" resizingAllowed="true"/>
            </Property>
          </Properties>
        </Component>
      </SubComponents>
    </Container>
  </SubComponents>
</Form>

#StudentFrame.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/GUIForms/JFrame.java to edit this template
 */
package java2.lesson07;

import java.util.List;
import javax.swing.JOptionPane;
import javax.swing.table.DefaultTableModel;

/**
 *
 * @author diepvan
 */
public class StudentFrame extends javax.swing.JFrame {
    DefaultTableModel tableModel;
    List<Student> dataList = null;
    
    /**
     * Creates new form StudentFrame
     */
    public StudentFrame() {
        initComponents();
        
        tableModel = (DefaultTableModel) tblStudent.getModel();
        
        dataList = StudentDAO.list("");
        
        showData();
    }

    private void showData() {
        tableModel.setRowCount(0);
        
        for (Student student : dataList) {
            tableModel.addRow(new Object[] {
                tableModel.getRowCount() + 1,
                student.getFullname(),
                student.getGender(),
                student.getAge(),
                student.getEmail(),
                student.getAddress()
            });
        }
    }
    
    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        jPanel1 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        txtFullname = new javax.swing.JTextField();
        jLabel2 = new javax.swing.JLabel();
        txtAge = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        txtEmail = new javax.swing.JTextField();
        jLabel4 = new javax.swing.JLabel();
        txtAddress = new javax.swing.JTextField();
        jLabel5 = new javax.swing.JLabel();
        cbGender = new javax.swing.JComboBox<>();
        btnSave = new javax.swing.JButton();
        btnReset = new javax.swing.JButton();
        btnDelete = new javax.swing.JButton();
        btnFind = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        tblStudent = new javax.swing.JTable();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

        jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("NHAP THONG TIN SINH VIEN"));

        jLabel1.setText("Fullname:");

        jLabel2.setText("Gender:");

        jLabel3.setText("Age:");

        jLabel4.setText("Email:");

        jLabel5.setText("Address:");

        cbGender.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Nam", "Nu", "Other" }));

        btnSave.setText("Save");
        btnSave.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnSaveActionPerformed(evt);
            }
        });

        btnReset.setText("Reset");
        btnReset.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnResetActionPerformed(evt);
            }
        });

        btnDelete.setText("Delete");
        btnDelete.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnDeleteActionPerformed(evt);
            }
        });

        btnFind.setText("Find");
        btnFind.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                btnFindActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(26, 26, 26)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel4)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jLabel1)
                            .addComponent(jLabel2)
                            .addComponent(jLabel3)
                            .addComponent(jLabel5))
                        .addGap(36, 36, 36)
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(txtAddress, javax.swing.GroupLayout.PREFERRED_SIZE, 430, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(txtAge, javax.swing.GroupLayout.PREFERRED_SIZE, 430, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(cbGender, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(txtFullname, javax.swing.GroupLayout.PREFERRED_SIZE, 430, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(txtEmail, javax.swing.GroupLayout.PREFERRED_SIZE, 430, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addComponent(btnSave)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(btnReset)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(btnDelete)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(btnFind)))))
                .addContainerGap(20, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(18, 18, 18)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(txtFullname, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(cbGender, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel2))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(txtAge, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(9, 9, 9)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel4)
                    .addComponent(txtEmail, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel5)
                    .addComponent(txtAddress, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(18, 18, 18)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(btnSave)
                    .addComponent(btnReset)
                    .addComponent(btnDelete)
                    .addComponent(btnFind))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        tblStudent.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {

            },
            new String [] {
                "No", "FullName", "Gender", "Age", "Email", "Address"
            }
        ) {
            boolean[] canEdit = new boolean [] {
                false, false, false, false, false, false
            };

            public boolean isCellEditable(int rowIndex, int columnIndex) {
                return canEdit [columnIndex];
            }
        });
        jScrollPane1.setViewportView(tblStudent);
        if (tblStudent.getColumnModel().getColumnCount() > 0) {
            tblStudent.getColumnModel().getColumn(0).setResizable(false);
            tblStudent.getColumnModel().getColumn(1).setResizable(false);
            tblStudent.getColumnModel().getColumn(2).setResizable(false);
            tblStudent.getColumnModel().getColumn(3).setResizable(false);
            tblStudent.getColumnModel().getColumn(4).setResizable(false);
            tblStudent.getColumnModel().getColumn(5).setResizable(false);
        }

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
                    .addComponent(jScrollPane1)
                    .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 233, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void btnResetActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnResetActionPerformed
        // TODO add your handling code here:
        txtFullname.setText("");
        txtAge.setText("");
        txtEmail.setText("");
        txtAddress.setText("");
        cbGender.setSelectedIndex(0);
    }//GEN-LAST:event_btnResetActionPerformed

    private void btnSaveActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnSaveActionPerformed
        // TODO add your handling code here:
        String fullname = txtFullname.getText();
        int age = Integer.parseInt(txtAge.getText());
        String email = txtEmail.getText();
        String address = txtAddress.getText();
        String gender = cbGender.getSelectedItem().toString();
        
        Student std = new Student(0, age, fullname, gender, email, address);
        
        StudentDAO.insert(std);
        
        dataList = StudentDAO.list("");
        
        showData();
    }//GEN-LAST:event_btnSaveActionPerformed

    private void btnDeleteActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnDeleteActionPerformed
        // TODO add your handling code here:
        int index = tblStudent.getSelectedRow();
        if(index < 0) {
            JOptionPane.showMessageDialog(rootPane, "Vui long chon sinh vien can xoa");
            return;
        }
        
        int option = JOptionPane.showConfirmDialog(rootPane, "Ban co chac chan muon xoa sinh vien nay khong?");
        
        if(option == 0) {
            int id = dataList.get(index).getId();
            StudentDAO.delete(id);
            
            dataList.remove(index);
            showData();
        }
    }//GEN-LAST:event_btnDeleteActionPerformed

    private void btnFindActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnFindActionPerformed
        // TODO add your handling code here:
        String s = JOptionPane.showInputDialog("Nhap ten sinh vien can tim: ");
        
        dataList = StudentDAO.list(s);
        showData();
    }//GEN-LAST:event_btnFindActionPerformed

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(StudentFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(StudentFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(StudentFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(StudentFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new StudentFrame().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton btnDelete;
    private javax.swing.JButton btnFind;
    private javax.swing.JButton btnReset;
    private javax.swing.JButton btnSave;
    private javax.swing.JComboBox<String> cbGender;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable tblStudent;
    private javax.swing.JTextField txtAddress;
    private javax.swing.JTextField txtAge;
    private javax.swing.JTextField txtEmail;
    private javax.swing.JTextField txtFullname;
    // End of variables declaration//GEN-END:variables
}

#Test.java

/*
 * Click nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt to change this license
 * Click nbfs://nbhost/SystemFileSystem/Templates/Classes/Class.java to edit this template
 */
package java2.lesson07;

import java.util.Locale;
import java.util.ResourceBundle;

/**
 *
 * @author diepvan
 */
public class Test {
    public static void main(String[] args) {
        showMenu();
    }
    
    static void showMenu() {
//        Locale locale = new Locale("vi", "VN");
        Locale locale = Locale.getDefault();
        
        ResourceBundle bundle = ResourceBundle.getBundle("message", locale);
        
        System.out.println(bundle.getString("msg_input_student"));
        System.out.println(bundle.getString("msg_display_student"));
        System.out.println(bundle.getString("msg_exit"));
        System.out.println(bundle.getString("msg_choose"));
    }
}
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