Download Event Mouse Klik di JTable

BAHASA PEMROGRAMAN BERORIENTASI OBJEK
Abdul Rahim, S.kom
TUJUAN

JAVA DATABASE, INPUT, DELETE, UPDATE
JAVA DATABASE
JMySQL.java
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.JOptionPane;
public class JMySQL {
public static Connection getKoneksi(){
String hostDbDriver = "jdbc:mysql://localhost/db_java";
Connection cn = null;
try {
cn = DriverManager.getConnection(hostDbDriver,"root","12123");
} catch (SQLException ex) {
JOptionPane.showMessageDialog(null, "Database error" +ex);
}
return cn;
}
public static void closeKoneksi(Connection cn, Statement st, ResultSet rs){
try {
if(st != null){st.close();}
if(rs != null){rs.close();}
if(cn != null){cn.close();}
}catch(SQLException ex) {
JOptionPane.showMessageDialog(null, ex);
}
}
}
FORM DATA USER
Gunakan frame_data_user pada latihan sebelumnya seperti gambar berikut :
Pada program ini, kita akan menggunakan event double click pada jtable untuk menampilkan
data yang hendak diubah pada jtextfield.
Dan one click untuk menghapus data.
Membuat method dataTable() pada frame_data_user
DefaultTableModel tblMode = null;
public void dataTabel(){
//menghapus semua baris pada tabel
tblMode = (DefaultTableModel) tblData.getModel();
tblMode.getDataVector().removeAllElements();
tblMode.fireTableDataChanged();
//end
Connection cn = JMySQL.getKoneksi();
Statement st = null;
ResultSet rs = null;
try {
st = cn.createStatement();
String select = "select *from tuser order by id desc";
st.executeQuery(select);
rs = st.getResultSet();
int row = 0;
while (rs.next()){
//tambah baris data kosong di tabel
tblMode.addRow(new Object[]{"","",""});
//mengisi data pada cell tabel
tblData.setValueAt(rs.getString("id"), row, 0);
tblData.setValueAt(rs.getString("username"), row, 1);
tblData.setValueAt(rs.getString("password"), row, 2);
row++;
}
JMySQL.closeKoneksi(cn, st, rs);
} catch (SQLException ex) {
JOptionPane.showMessageDialog(this, "Error database " +ex);
}
}
FORM DATA USER
Kode di Konstruktor
txtUser.requestFocus();
//disable tombol ubah
btnUbah.setEnabled(false);
this.dataTabel();
FORM DATA USER
Event Mouse Klik di JTable
if(evt.getClickCount() == 2){
btnUbah.setEnabled(true);
btnSimpan.setEnabled(false);
btnHapus.setEnabled(false);
int barisKlik = tblData.getSelectedRow();
String
id = String.valueOf(tblData.getValueAt(barisKlik, 0));
String username = String.valueOf(tblData.getValueAt(barisKlik, 1));
String password = String.valueOf(tblData.getValueAt(barisKlik, 2));
txtUser.setText(username);
txtIdUser.setText(id);
txtPassword.setText(password);
txtKpassword.setText(password);
}
FORM DATA USER
Event btnUbah Action
String user = txtUser.getText();
String pass = String.valueOf(txtPassword.getPassword());
String idUser = txtIdUser.getText();
String queryUpdate = "update tuser set password='"+pass+"', username='"+user+"'
where id='"+idUser+"'";
try {
Connection cn = JMySQL.getKoneksi();
Statement st = cn.createStatement();
st.executeUpdate(queryUpdate);
JOptionPane.showMessageDialog(this, "Data sudah diubah");
JMySQL.closeKoneksi(cn, st, null);
} catch (SQLException ex) {
JOptionPane.showMessageDialog(this, "Data gagal diubah, error "+ex);
}
FORM DATA USER
Event btnUbah Action
this.dataTabel();
btnUbah.setEnabled(false);
btnSimpan.setEnabled(true);
btnHapus.setEnabled(true);
txtIdUser.setText("");
txtUser.setText("");
txtPassword.setText("");
txtKpassword.setText("");
txtUser.requestFocus();
FORM DATA USER
Event btnHapus
int confirm = JOptionPane.showConfirmDialog(this, "Data akan dihapus");
if(confirm == JOptionPane.OK_OPTION){
int baris = tblData.getSelectedRow();
String id = String.valueOf(tblData.getValueAt(baris, 0));
String queryUpdate = "delete from tuser where id='"+id+"'";
try {
Connection cn = JMySQL.getKoneksi();
Statement st = cn.createStatement();
st.executeUpdate(queryUpdate);
JOptionPane.showMessageDialog(this, "Data sudah dihapus");
JMySQL.closeKoneksi(cn, st, null);
} catch (SQLException ex) {
JOptionPane.showMessageDialog(this, "Data gagal hapus, error "+ex);
}
this.dataTabel();
}