Adding a window to a container: Error

Question

Hello there,
Im facing a problem with my program.My program is about a Car Rental System and I am using GUI for the interface. From the main(CarRental) program,when user click one of the menu, there is another interface will appear for user to enter details.The problem is,my main (CarRental)program is running,click the first menu,then another interface open,but wen user enter details n click buttons , it is not even working. Below is my program:
//This is main menu program
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import javax.swing.JFrame;
public class CarRental extends JFrame implements ActionListener{
     JFrame f;
     JLabel l1,l2,l3,choice;
     JPanel p1,p2,p3,p4,p5,p6,p7,p8,p9;
     JButton btnA,btnB,btnC,btnD,btnE,btnF;
     Connection conn;
     Statement stmt;
     ResultSet rs;
     public CarRental(){
          p1=new JPanel();p2=new JPanel();p3=new JPanel();
          p4=new JPanel();p5=new JPanel();p6=new JPanel();
          p7=new JPanel();p8=new JPanel();p9=new JPanel();
          f=new JFrame("New Rental Record");
          l1=new JLabel("........::: Car Rental System :::.........");
          l2=new JLabel("*******************************************************");
          choice=new JLabel("Please select your option:");
          btnA=new JButton("[1] New Rental Record");
          btnB=new JButton("[2] Update Rental Record");
          btnC=new JButton("[3] Search Rental Record");
          btnD=new JButton("[4] Delete Rental Record");
          btnE=new JButton("[5] Display Rental record");
          btnF=new JButton("[6] Exit");
          l3=new JLabel("*******************************************************");
          f.setLayout(new GridLayout(10,1));
          f.pack();
          f.setVisible(true);
          f.setSize(350,500);
          f.setBackground(Color.white);
          p1.add(l1);f.add(p1);
          p2.add(l2);f.add(p2);
          p3.add(choice);f.add(p3);
          p4.add(btnA);f.add(p4);
          p5.add(btnB);f.add(p5);
          p6.add(btnC);f.add(p6);
          p7.add(btnD);f.add(p7);
          p8.add(btnE);f.add(p8);
          p9.add(btnF);f.add(p9);
          btnA.addActionListener(this);
          btnB.addActionListener(this);
          btnC.addActionListener(this);
          btnD.addActionListener(this);
          btnE.addActionListener(this);
          btnF.addActionListener(this);
     f.addWindowListener(new WindowAdapter(){
               public void windowClosing(WindowEvent e)
                    {System.exit(0);}});
          public void actionPerformed(ActionEvent e){
                    if(e.getSource()== btnA)
                    {     NewRecord nr=new NewRecord();}
                     else if(e.getSource()== btnB)
                    {     updateRecord ur=new updateRecord();}
                    else if(e.getSource()== btnC)
                    {     searchRecord sr=new searchRecord(); }
                    else if(e.getSource()== btnD)
                    {     deleteRecord dr=new deleteRecord(); }
                    else if(e.getSource()== btnE){
                         try{
                              Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
                         catch(ClassNotFoundException e3) {
                              JOptionPane.showMessageDialog(null,"ERROR:"+e3.getMessage());
                         try{
                              conn=DriverManager.getConnection("Jdbc:Odbc:Car Rental", "", "");
                              stmt=conn.createStatement();
                              rs=stmt.executeQuery("Select * from Customer where CustID");
String s=("CustID:   CustName:    CustAdd:          CustPhone:       No.of days rent:     Rate per rental: \n");
while(rs.next())
s=s+rs.getString(1)+"             "+rs.getString(2)+"              "+rs.getString(3)+"              "+rs.getString(4)+"                    "+rs.getString(5)+"                     "+rs.getString(6)+"\n";
                                   JOptionPane.showMessageDialog(null,s);}
catch(SQLException e4){e4.printStackTrace();}}//end of F
//to exit the program                    
else if(e.getSource()== btnF){
JOptionPane.showMessageDialog(null,"Thank you");System.exit(0);}
else
JOptionPane.showMessageDialog(null,"Invalid Option!");System.exit(0);
               }//end of if statement
public static void main(String args[]){
          CarRental cr= new CarRental();}//end of main
}//end of main menu
//New Rental program when user selects it
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.sql.*;
public class NewRecord extends JFrame implements ActionListener{
     JFrame f;
     Container c;
     FlowLayout layout;
     JLabel l1,l2,custId,custName,custAdd,custPhone,dayRent,rateRent;
JTextField tid,tname,tphone,tday,trate;
                              JTextArea tadd;
                              JButton save,clear,exit;
                              Connection conn;
                              Statement stmt;
                              ResultSet rs;
                              JPanel p1,p2,p3,p4,p5,p6,p7,p8,p9,p10,p11;
                         public NewRecord(){
                            //super("New Record");
                              layout = new FlowLayout();
                              c=getContentPane();
                              c.setLayout(layout);
                              p1=new JPanel();p2=new JPanel();p3=new JPanel();
                              p4=new JPanel();p5=new JPanel();p6=new JPanel();
                              p7=new JPanel();p8=new JPanel();p9=new JPanel();
                              p10=new JPanel();p11=new JPanel();
                              f=new JFrame();     
                              l1=new JLabel("........::: New Rental Record :::.........");
                              l2=new JLabel("*******************************************************");
                              custId =new JLabel("Customer ID:");
                              custName=new JLabel("Customer name:");
                              custAdd=new JLabel("Customer address:");
                              custPhone=new JLabel("Customer phone:");
                              dayRent=new JLabel("Days of rental:");
                              rateRent=new JLabel("Rate per rental:");
                              tid= new JTextField(10);
                              tname=new JTextField(10);
                              tphone=new JTextField(10);
                              tadd=new JTextArea(4,30);
                              tday=new JTextField(5);
                              trate=new JTextField(10);
                              save=new JButton("SAVE");
                              clear=new JButton("CLEAR");
                              exit=new JButton("EXIT");
                              f.setLayout(new GridLayout(11,1));
                              f.setBackground(Color.white);
                              f.setVisible(true);
                              f.setSize(600,600);
                              p1.add(l1);f.add(p1);
                              p2.add(l2);f.add(p2);
                              p3.add(custId);p3.add(tid);f.add(p3);     
                              p4.add(custName);p4.add(tname);f.add(p4);
                              p5.add(custAdd);p5.add(tadd);f.add(p5);
                              p6.add(custPhone);p6.add(tphone);f.add(p6);                         
                              p7.add(dayRent);p7.add(tday);f.add(p7);
                              p8.add(rateRent);p8.add(trate);f.add(p8);
                              p9.add(save);f.add(p9);
                              p10.add(clear);f.add(p10);
                              p11.add(exit);f.add(p11);
                         /*     f.add(l1);
                              f.add(l2);
                              f.add(custId);
                              f.add(tid);
                              f.add(custName);
                              f.add(tname);
                              f.add(custAdd);
                              f.add(tadd);
                              f.add(custPhone);
                              f.add(tphone);
                              f.add(dayRent);
                              f.add(tday);
                              f.add(rateRent);
                              f.add(trate);
                              f.add(save);
                              f.add(clear);
                              f.add(exit);*/
                              c.add(f);
                              save.addActionListener(this);
                              clear.addActionListener(this);
                              exit.addActionListener(this);
                              f.addWindowListener(new WindowAdapter(){
                              public void windowClosing(WindowEvent e)
                                   {System.exit(0);}});
                         public void actionPerformed(ActionEvent e){
                              if(e.getSource()== exit)
                                   {System.exit(0);}
                              if(e.getSource()== clear){
                                   tid.setText("");
                                   tname.setText("");
                                   tadd.setText("");
                                   tphone.setText("");
                                   tday.setText("");
                                   trate.setText("");}
                              if(e.getSource()== save){
                                   try{
                                        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
                                   catch(ClassNotFoundException e1) {
                                        JOptionPane.showMessageDialog(null,"ERROR:"+e1.getMessage());
                                   try{
                                        conn=DriverManager.getConnection("Jdbc:Odbc:Car Rental", "", "");
                                        stmt=conn.createStatement();
                                        rs=stmt.executeQuery("Select * from Customer");
                                        while(rs.next()){
                                        tid.setText(rs.getString(1));
                                        tname.setText(rs.getString(2));
                                        tadd.setText(rs.getString(3));
                                        tphone.setText(rs.getString(4));
                                        tday.setText(rs.getString(5));
                                        trate.setText(rs.getString(6));}
                                        String s=("CustID:   CustName:    CustAdd:          CustPhone:       No.of days rent:     Rate per rental: \n");
                                        while(rs.next())
                                        s=s+rs.getString(1)+"             "+rs.getString(2)+"              "+rs.getString(3)+"              "+rs.getString(4)+"                    "+rs.getString(5)+"                     "+rs.getString(6)+"\n";
                                             JOptionPane.showMessageDialog(null,s);
                                   catch(SQLException e2){
                                             e2.printStackTrace();
                         public static void main(String args[]){
                                   NewRecord nr=new NewRecord();
                              //     nr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                                   }//end of newRecord class
                              }//ends of New rental program
I tried to use extending to JPanel or JApplet but still the same. Any help??

Answer 1

Hi,
In the NewRecord java file, use change the
f = new JFrame();               
c = f.getContentPane();, after that all panel add into the container
p1.add(l1);c.add(p1);                    
p2.add(l2);c.add(p2);
p3.add(custId);p3.add(tid);c.add(p3);     
p4.add(custName);p4.add(tname);c.add(p4);
p5.add(custAdd);p5.add(tadd);c.add(p5);
p6.add(custPhone);p6.add(tphone);c.add(p6);          
p7.add(dayRent);p7.add(tday);c.add(p7);
p8.add(rateRent);p8.add(trate);c.add(p8);
p9.add(save);c.add(p9);
p10.add(clear);c.add(p10);
p11.add(exit);c.add(p11);and finally remove this line below
//c.add(f);Try to avoid add frame into the container, or else you will receive adding a window to a container error.
Rgrds,
Sen
Message was edited by:
arjensen