I have a crazy problem :DI have a Java application with a Jtable
and the show, add, delete and update Buttons. The connection to my database works.
Now when I insert Data into my Textfields
and click on submit (add) I can see the entry in my Jtable
, but I cant see it in my Database.
This is crazy because I already have data in my Database some simple entries and my JTable
is showing the data but when I insert data through the java app I can´t see the entry in my phpmyadmin database
to which I am connected..
It´s hard to explain but maybe you can find the problem :/
TABLE VIEW FROM JAVA JTABLE http://i.imgur.com/BrRUyx9.jpg
TABLE VIEW FROM PHPMYADMIN.COM http://i.imgur.com/TIbVzmc.jpg
MY CODE
CONTROLLER CLASS
public void controllActionListenerAddEquipmentSubmitBtn(){
main.setActionListenerAddEquipmentSubmitBtn(new ActionListener(){
@Override
public void actionPerformed(ActionEvent arg0) {
if(arg0.getSource()==main.getButtonAddEquipmentBtn()){
EquipmentDAO edao = new EquipmentDAO();
try {
edao.create(main.addEquipmentSubmit());
} catch (SQLException e) {
e.printStackTrace();
}
}
}
});
}
MAINFRAME CLASS...(MAIN)
public Equipment addEquipmentSubmit(){
equipment = new Equipment();
equipment.setName(addEquipment.getName());
equipment.setSection(addEquipment.getSection());
equipment.setType(addEquipment.getType());
equipment.setValue(Double.parseDouble((addEquipment.getValue())));
equipment.setAmount(Integer.parseInt(addEquipment.getAmount()));
return equipment;
}
DAOCLASS
package DAOCollection;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JOptionPane;
import com.mysql.jdbc.PreparedStatement;
import notesDBMySQL.DatabaseHandler;
import EntityClasses.Equipment;
public class EquipmentDAO implements DaoInterface{
private Connection con;
private java.sql.PreparedStatement sta;
private Statement std;
private ResultSet res;
private DatabaseHandler handle;
private String query;
@Override
public ResultSet show() throws SQLException{
handle = new DatabaseHandler();
Connection con = handle.buildConnectionToServer();
String query = "select EID as ID, EquipmentName as Name, EquipmentSection as Section, EquipmentType as Type, EquipmentValue as Value, EquipmentAmount as Amount from Equipment";
sta = con.prepareStatement(query);
res = sta.executeQuery(query);
return res;
}
@Override
public void create(Object c) throws SQLException {
handle = new DatabaseHandler();
con = handle.buildConnectionToServer();
std = con.createStatement();
Equipment equ = (Equipment) c ;
query = "INSERT INTO Equipment(EquipmentName,EquipmentSection,EquipmentType,EquipmentValue, EquipmentAmount)"+"VALUES('"+equ.getName()+"','"+equ.getSection()+"','"+equ.getType()+"','"+equ.getValue()+"','"+equ.getAmount()+"')";
std.execute(query);
con.commit();
handle.closeConnection();
}
@Override
public void update(Object c) throws SQLException {
Equipment equ = (Equipment) c;
handle = new DatabaseHandler();
con = handle.buildConnectionToServer();
query = "UPDATE Equipment SET name=?,section=?,type=?,value=?,amount=?,"+"WHERE EID=?";
sta = con.prepareStatement(query);
sta.setString(1, equ.getName());
sta.setString(2,equ.getSection());
sta.setString(3, equ.getType());
sta.setDouble(4, equ.getValue());
sta.setInt(5, equ.getAmount());
sta.setInt(6, equ.getEid());
sta.executeUpdate();
sta.close();
con.close();
handle.closeConnection();
}
@Override
public void delete(int id) throws SQLException {
handle = new DatabaseHandler();
con = handle.buildConnectionToServer();
query = "DELETE FROM EQUIPMENT"+"WHERE EID="+id;
sta.executeUpdate(query);
sta.close();
con.close();
handle.closeConnection();
}
}
ENTITY CLASS
package EntityClasses;
public class Equipment {
private int eid;
private String name;
private String section;
private String type;
private double value;
private int amount;
public int getEid() {
return eid;
}
public void setEid(int eid) {
this.eid = eid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSection() {
return section;
}
public void setSection(String section) {
this.section = section;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public double getValue() {
return value;
}
public void setValue(double value) {
this.value = value;
}
public int getAmount() {
return amount;
}
public void setAmount(int amount) {
this.amount = amount;
}
}
ADD CLASS
import javax.swing.JPanel;
import javax.swing.JLabel;
import java.awt.Font;
import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.ImageIcon;
import java.awt.Color;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class AddEquipment extends JPanel {
private JTextField txtu2;
private JTextField txtu3;
private JTextField txtu4;
private JTextField txtu5;
private JTextField txtu6;
private JButton btnu8;
private JButton btnu9; //Back Button
public AddEquipment() {
setLayout(null);
JLabel lblu8 = new JLabel("Add Equipment");
lblu8.setForeground(Color.WHITE);
lblu8.setFont(new Font("Tahoma", Font.BOLD, 16));
lblu8.setBounds(12, 13, 319, 33);
add(lblu8);
JLabel lblu3 = new JLabel("Name");
lblu3.setFont(new Font("Tahoma", Font.BOLD, 13));
lblu3.setBounds(60, 91, 46, 14);
add(lblu3);
txtu2 = new JTextField();
txtu2.setColumns(10);
txtu2.setBounds(221, 88, 377, 22);
add(txtu2);
JLabel lblu4 = new JLabel("Section");
lblu4.setFont(new Font("Tahoma", Font.BOLD, 13));
lblu4.setBounds(60, 156, 69, 14);
add(lblu4);
txtu3 = new JTextField();
txtu3.setColumns(10);
txtu3.setBounds(221, 153, 377, 22);
add(txtu3);
JLabel lblu5 = new JLabel("Type");
lblu5.setFont(new Font("Tahoma", Font.BOLD, 13));
lblu5.setBounds(60, 221, 46, 14);
add(lblu5);
txtu4 = new JTextField();
txtu4.setColumns(10);
txtu4.setBounds(221, 218, 377, 22);
add(txtu4);
JLabel lblu6 = new JLabel("Value");
lblu6.setFont(new Font("Tahoma", Font.BOLD, 13));
lblu6.setBounds(60, 286, 46, 14);
add(lblu6);
txtu5 = new JTextField();
txtu5.setColumns(10);
txtu5.setBounds(221, 283, 377, 22);
add(txtu5);
JLabel lblu7 = new JLabel("Amount");
lblu7.setFont(new Font("Tahoma", Font.BOLD, 13));
lblu7.setBounds(60, 351, 69, 14);
add(lblu7);
txtu6 = new JTextField();
txtu6.setColumns(10);
txtu6.setBounds(221, 348, 377, 22);
add(txtu6);
btnu8 = new JButton("Submit");
btnu8.setFont(new Font("Tahoma", Font.PLAIN, 13));
//btnu8.setBackground(Color.BLACK); // button color
//btnu8.setBackground( new Color(0, 0, 0, 50) ); //opacity
btnu8.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
}
});
btnu8.setBounds(422, 534, 110, 30);
add(btnu8);
btnu9 = new JButton("Back");
btnu9.setFont(new Font("Tahoma", Font.PLAIN, 13));
btnu9.setBounds(542, 534, 110, 30);
add(btnu9);
JLabel lblback3 = new JLabel("");
lblback3.setIcon(new ImageIcon("\\\\I-INTRA-03\\IIS-Lehre\\DAPRO-WF4.informatik.hs-ulm.de\\15\\group_together\\GUI_graphics\\background_panel.jpg"));
lblback3.setBounds(0, 0, 664, 577);
add(lblback3);
}
//Getter-Method for the Back Button "btnu9"
public JButton getBackAddEquipment(){
return btnu9;
}
//Getter-Method for the "Submit" Button "btnu8"
public JButton getAddEquipmentBtn(){
return btnu8;
}
public String getName() {
return this.txtu2.getText();
}
// method sets the string value of the textfield
public void setName(String txtu2) {
this.txtu2.setText(txtu2);
}
public String getSection() {
return this.txtu3.getText();
}
public void setSection(String txtu3) {
this.txtu3.setText(txtu3);
}
public String getType() {
return this.txtu4.getText();
}
public void setType(String txtu4) {
this.txtu4.setText(txtu4);
}
public String getValue() {
return this.txtu5.getText();
}
public void setValue(String txtu5) {
this.txtu5.setText(txtu5);
}
public String getAmount() {
return this.txtu6.getText();
}
public void setAmount(String txtu6) {
this.txtu6.setText(txtu6);
}
}
Your DAO implementation is asking for trouble. You should never, ever return a ResultSet
. A better idea is to load the data into an object or data structure and close the ResultSet
in method scope in a finally block. Same for all your database resources.
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