huong dan java ketnoi CSDL

Tao table(nhi datagirdview trong c#)
ketnoidb kndb;
Connection conn;
public String[] tieude={"STT","Mã chức vụ","Tên chức vụ","Lương","Ghi chú"};
public DefaultTableModel mode=new DefaultTableModel(tieude,0);
public void resettb()
{
try
{
conn=kndb.getKetNoi();
String sql="select * from Chucvu";
Statement stm=conn.createStatement();
ResultSet rs=stm.executeQuery(sql);
this.tBchucvu.setModel(mode);
mode.setRowCount(0);
int i=0;
while(rs.next())
{
String[] row={""+(+
+i),rs.getString(1),rs.getString(2),rs.getString(3),rs.getString(4)};
mode.addRow(row);
}
rs.close();
}
catch(Exception ex)
{
ex.printStackTrace();
}
}
Nut reset cac textbox
tXtghichucv.setText("");

tXtluongcv.setText("");
tXtmacv.setText("");
tXttencv.setText("");
xay dung thu tuc tu sql va goi trong
java(dung netbean)
private void
bTthemActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
try
{
double
luong=Double.parseDouble(tXtluongcv.getText());
conn=kndb.getKetNoi();
String sql="{call spud_them_cv(?,?,?,?)}";
CallableStatement cstm=conn.prepareCall(sql);
cstm.setString(1, tXtmacv.getText());
cstm.setString(2, tXttencv.getText());
cstm.setDouble(3, luong);
cstm.setString(4, tXtghichucv.getText());
cstm.executeUpdate();
resettb();
cstm.close();
JOptionPane.showMessageDialog(this, "Thành
công!");
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(this,
ex.getMessage()+"Thất bại!");
}

}
Load combobox
public void loadcv()
{
try
{
conn=kndb.getKetNoi();
String sql="select Macv from Chucvu";
Statement stm=conn.createStatement();
ResultSet rs=stm.executeQuery(sql);
//stm.executeQuery(sql);
while(rs.next())
{
String name=rs.getString("Macv");
cBchucvu.addItem(name);
}
}
catch(Exception e)
{
}
Vidu
if (tblCustomers.getSelectedRow() >= 0) {

txtID.setText(String.valueOf(CustomersList.get(tblCustom
ers.getSelectedRow()).getCustomerID()));

txtName.setText(CustomersList.get(tblCustomers.getSelect
edRow()).getCustomerName());

txtAddress.setText(CustomersList.get(tblCustomers.getSel

ectedRow()).getAddress());

txtPhone.setText(String.valueOf(CustomersList.get(tblCust
omers.getSelectedRow()).getPhone()));

txtEmail.setText(CustomersList.get(tblCustomers.getSelect
edRow()).getEmail());
btnAddNew.setEnabled(false);
btnReset.setEnabled(true);
btnEdit.setEnabled(true);
btnGetCustomerID.setEnabled(true);
hien thi table click
int hang=this.tBnhanvien.getSelectedRow();
tXtmanv.setText((String)
this.tBnhanvien.getValueAt(hang, 1));
cBcv.setSelectedItem((String)
this.tBnhanvien.getValueAt(hang, 7));
dung truc tiep cau lenh
String sql="delete Phong where
Maphong='"+tXtmap.getText()+"'";
Statement stm=conn.createStatement();
stm.executeUpdate(sql);
dang nhap
public boolean dangnhap(String id,String pass)
{
try
{
String sql="select * from Nguoidung where
id='"+id+"' and pass='"+pass+"'";
ketnoidb kndb=new ketnoidb();

Connection conn=ketnoidb.getKetNoi();
Statement st=conn.createStatement();
ResultSet rs=st.executeQuery(sql);
while(rs.next())
{
kndb.gettemp();
setthanhcong(true);
return true;
}
}
catch(Exception e1)
{}
setthanhcong(false);
return false;
}
if(kndb.dangnhap(tXtid.getText(), tXtpass.getText()))
{
//if(kndb.gettemp()==1)
// {
kndb.setthanhcong(true);
frm_giaodien f=new frm_giaodien();
f.check();
this.dispose();
public String dointn(String dd,String mm,String yy)
{
return nsinh=dd+"/"+mm+"/"+yy;
}
String n=chuyendoi(txt
dd=cBdd.getSelectedItem().toString();
if(JOptionPane.showConfirmDialog(this, "Bạn có chắc

muốn xóa nhân viên này?","Thông
báo",JOptionPane.YES_NO_OPTION)==JOptionPane.YE
S_OPTION)
if((frm_dangnhap.kndb.getthanhcong()==true) )
{
mNchucnang.setEnabled(true);
}