Java getdata

GetData

public void ambilData() {
refresh();
String [] kolom = {"Kode_Obat","Nama_Obat","Jenis","Stock","Satuan","Harga_Beli","Harga_Jual"};
ob.setColumnIdentifiers(kolom);
try {
String sql = "SELECT * FROM tb_obat";
ResultSet rs = stat.executeQuery(sql);
while (rs.next()) { 
String Kode_Obat = rs.getString("Kode_Obat");
String Nama_Obat = rs.getString("Nama_Obat");
String Jenis = rs.getString("Jenis");
String Stock = rs.getString("Stock");
String Satuan = rs.getString("Satuan");
String Harga_Beli = rs.getString("Harga_Beli");
String Harga_Jual = rs.getString("Harga_Jual");
String [] data = {Kode_Obat,Nama_Obat,Jenis,Stock,Satuan,Harga_Beli,Harga_Jual};
ob.addRow(data);
}
} catch (SQLException e) {
JOptionPane.showMessageDialog(null, "Terjadi Kesalahan "+e);
}
}