Accessing tables from java

Question

I am creating an inventory system. I have used Java for front-end where i have created forms which display the vendor table, customer table, item table, order table, invoice tbl etc.
I have created class files for each form that im displaying. i have also made connection to the oracle dbs succesfully. i can access data from the dbs.
but my problem is,
1)
for instance i have created a vendor_master table in oracle with certain constraints like vendor_number can contain only 5 varchar2 characters ,
eg.
create table vendor_master
(v_no varchar2(5) constraint v_no_pk primary key,
v_name varchar2(25),
v_add varchar2(15),
city varchar2(15),
st varchar2(15),
zip number(10),
tel number(11),
fax number(11));
now when i want 2 insert any row in the table i should be able 2 insert only "certain" characters of "certain" length depending on the constraints i have set. how do i do tht? coz java does not allow me 2 set the max chars like VB in the properties column
i have my vendor Master class file here:
code:--------------------------------------------------------------------------------
package mainpage;
import java.io.*;
import java.io.Serializable;
import java.awt.*;
import java.awt.event.*;
import java.lang.String.*;
import javax.swing.*;
import javax.swing.JPanel;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.ResultSet;
import java.util.Vector;
import oracle.jdbc.driver.OracleDriver;
import oracle.jdbc.OracleResultSet;
import java.sql.PreparedStatement;
public class VendorMaster extends JPanel implements java.io.Serializable
JFrame venMastFrame = new JFrame("Vendor Master");
JLabel vennolbl = new JLabel();
JLabel venNamelbl = new JLabel();
JLabel venAdd = new JLabel();
JTextField venAddtxt = new JTextField();
JTextField venNotxt = new JTextField();
JTextField venNmtxt = new JTextField();
JLabel venCitylbl = new JLabel();
JTextField venCitytxt = new JTextField();
JLabel venStlbl = new JLabel();
JTextField venSttxt = new JTextField();
JLabel venZiplbl = new JLabel();
JTextField venZiptxt = new JTextField();
JLabel venTellbl = new JLabel();
JTextField venTeltxt = new JTextField();
JLabel venFaxlbl = new JLabel();
JTextField venFaxtxt = new JTextField();
JButton vPrevbtn = new JButton();
JButton vNxtbtn = new JButton();
JButton vExitbtn = new JButton();
JButton vNewbtn = new JButton();
JButton vDelbtn = new JButton();
JButton vUpdtbtn = new JButton();
JButton vSavebtn = new JButton();
int currentIndex = 0;
int totalRecords = 0;
private Vector vendorMasterRecords = new Vector();
public VendorMaster()
venMastFrame.setSize(850,760);
venMastFrame.setVisible(true);
//venMastFrame.show();
try
jbInit();
} catch (Exception e)
e.printStackTrace();
} // end of constructor
private void jbInit() throws Exception
Connection myConnection = DataManager.createConnection();
vendorMasterRecords = loadVendorMasterRecords(myConnection);
VendorMasterBean vmBean = null;
venMastFrame.getContentPane().setLayout(null);
if(vendorMasterRecords != null)
{                 vmBean = (VendorMasterBean)vendorMasterRecords.elementAt(0);
totalRecords = vendorMasterRecords.size();
currentIndex = 0;
if(vmBean == null)
vmBean = new VendorMasterBean();
venNamelbl.setText("Vendor Name:");
venNamelbl.setBounds(new Rectangle(22, 87, 89, 23));
venNmtxt.setBounds(new Rectangle(153, 81, 224, 22));
venNmtxt.setEnabled(false);
venNmtxt.setText(vmBean.getVendorName());
venAdd.setText("Address:");
venAdd.setBounds(new Rectangle(25, 130, 113, 31));
venAddtxt.setBounds(new Rectangle(152, 126, 201, 22));
venAddtxt.setEnabled(false);
venAddtxt.setText(vmBean.getAddress());
vennolbl.setText("Vendor No:");
vennolbl.setBounds(new Rectangle(23, 41, 73, 22));
venNotxt.setBounds(new Rectangle(155, 38, 108, 22));
venNotxt.setEnabled(false);
venNotxt.setText(vmBean.getVendorNumber());
venCitylbl.setText("City:");
venCitylbl.setBounds(new Rectangle(25, 175, 61, 29));
venCitytxt.setBounds(new Rectangle(153, 172, 156, 24));
venCitytxt.setEnabled(false);
venCitytxt.setText(vmBean.getCity());
venStlbl.setText("State:");
venStlbl.setBounds(new Rectangle(25, 225, 64, 32));
venSttxt.setBounds(new Rectangle(152, 223, 158, 24));
venSttxt.setEnabled(false);
venSttxt.setText(vmBean.getState());
venZiplbl.setText("Zip:");
venZiplbl.setBounds(new Rectangle(24, 275, 58, 24));
venZiptxt.setBounds(new Rectangle(150, 272, 108, 24));
venZiptxt.setEnabled(false);
venZiptxt.setText(vmBean.getZipcode());
venTellbl.setText("Telephone No:");
venTellbl.setBounds(new Rectangle(25, 323, 106, 26));
venTeltxt.setBounds(new Rectangle(149, 326, 108, 26));
venTeltxt.setEnabled(false);
venTeltxt.setText(vmBean.getTelephone());
venFaxlbl.setText("Fax No:");
venFaxlbl.setBounds(new Rectangle(27, 375, 97, 26));
venFaxtxt.setBounds(new Rectangle(149, 375, 107, 26));
venFaxtxt.setEnabled(false);
venFaxtxt.setText(vmBean.getFax());
/* code for buttons */
vExitbtn.setBounds(new Rectangle(681, 457, 111, 29));
vExitbtn.setText("EXIT");
vExitbtn.addKeyListener(new VendorMaster_vExitbtn_keyAdapter(this));
vExitbtn.addActionListener(new VendorMaster_vExitbtn_actionAdapter(this));
vPrevbtn.setText("PREVIOUS");
vPrevbtn.addKeyListener(new VendorMaster_vPrevbtn_keyAdapter(this));
vPrevbtn.addActionListener(new VendorMaster_vPrevbtn_actionAdapter(this));
vPrevbtn.setBounds(new Rectangle(14, 457, 110, 29));
vPrevbtn.setEnabled(false);
vNxtbtn.setText("NEXT");
vNxtbtn.addKeyListener(new VendorMaster_vNxtbtn_keyAdapter(this));
vNxtbtn.addActionListener(new VendorMaster_vNxtbtn_actionAdapter(this));
vNxtbtn.setBounds(new Rectangle(124, 457, 111, 29));
vNewbtn.setText("NEW");
vNewbtn.setBounds(new Rectangle(235, 457, 111, 29));
vNewbtn.setActionCommand("NEW");
vNewbtn.addActionListener(new VendorMaster_vNewbtn_actionAdapter(this));
vNewbtn.addKeyListener(new VendorMaster_vNewbtn_keyAdapter(this));
vDelbtn.setText("DELETE");
vDelbtn.setBounds(new Rectangle(346, 457, 111, 29));
vDelbtn.setHorizontalAlignment(SwingConstants.CENTER);
vDelbtn.addActionListener(new VendorMaster_vDelbtn_actionAdapter(this));
vDelbtn.addKeyListener(new VendorMaster_vDelbtn_keyAdapter(this));
vUpdtbtn.setText("UPDATE");
vUpdtbtn.addActionListener(new VendorMaster_vUpdtbtn_actionAdapter(this));
vUpdtbtn.setBounds(new Rectangle(457, 457, 113, 29));
vUpdtbtn.setMaximumSize(new Dimension(71, 25));
vUpdtbtn.setMinimumSize(new Dimension(71, 25));
vUpdtbtn.setPreferredSize(new Dimension(71, 25));
/* Add all the txtboxes, lbls and buttons to the frame */
vSavebtn.setBounds(new Rectangle(570, 457, 111, 29));
vSavebtn.setText("SAVE");
vSavebtn.addActionListener(new VendorMaster_vSavebtn_actionAdapter(this));
venMastFrame.getContentPane().add(vennolbl, null);
venMastFrame.getContentPane().add(venNotxt, null);
venMastFrame.getContentPane().add(venNamelbl, null);
venMastFrame.getContentPane().add(venNmtxt, null);
venMastFrame.getContentPane().add(venAdd, null);
venMastFrame.getContentPane().add(venAddtxt, null);
venMastFrame.getContentPane().add(venCitylbl, null);
venMastFrame.getContentPane().add(venCitytxt, null);
venMastFrame.getContentPane().add(venStlbl, null);
venMastFrame.getContentPane().add(venSttxt, null);
venMastFrame.getContentPane().add(venZiplbl, null);
venMastFrame.getContentPane().add(venZiptxt, null);
venMastFrame.getContentPane().add(venTellbl, null);
venMastFrame.getContentPane().add(venTeltxt, null);
venMastFrame.getContentPane().add(venFaxlbl, null);
venMastFrame.getContentPane().add(venFaxtxt, null);
venMastFrame.getContentPane().add(vPrevbtn, null);
venMastFrame.getContentPane().add(vNxtbtn, null);
venMastFrame.getContentPane().add(vNewbtn, null);
venMastFrame.getContentPane().add(vDelbtn, null);
venMastFrame.getContentPane().add(vUpdtbtn, null);
venMastFrame.getContentPane().add(vSavebtn, null);
venMastFrame.getContentPane().add(vExitbtn, null);
} // end of jbinit
public static void main(String[] args)
VendorMaster vendorMaster1 = new VendorMaster();
} //end of main
/* this is where the data will be retrieved from the dbs */
protected Vector loadVendorMasterRecords(Connection connection)
//Connection connection = null;
Vector masterRecords = new Vector();
// From database getting values
try
//connection = connectionManager.getConnection();
Statement stmt = connection.createStatement();
String queryall = "Select * from vendor_master order by v_no";
ResultSet rs = stmt.executeQuery(queryall);
while (rs.next())
String vendorNumber = rs.getString("v_no");
String vendorName = rs.getString("v_name");
String address = rs.getString("v_add");
String city = rs.getString("city");
String state = rs.getString("st");
String zipCode = rs.getString("zip");
String telephone = rs.getString("tel");
String fax = rs.getString("fax");
VendorMasterBean vendorMasterBean = new VendorMasterBean(vendorNumber,
vendorName,
address,
city,
state,
zipCode,
telephone,
fax);
/* data retrieved from the vendormasterbean is then inserted in vector*/
masterRecords.addElement(vendorMasterBean);
} // end of while
} catch (Exception e) // end of try & start of catch
e.printStackTrace();
} // end of catch
finally
if(connection != null)
DataManager.freeConnection(connection);
return masterRecords; /* the data stored in
masterRecords is passed 2 vendormasterRecords*/
} // finally ends here
} // end of loadvendorMasterrecords
/*example- when previous button is pressed then an event is triggered
captured by the key listener and then actionPerformed method is called
which in turn calls the getPreviousRecord*/
/* to insert records */
protected void addVendorMasterRecord(VendorMasterBean vmBean )
Connection connection = null;
Vector masterRecords = new Vector();
// first check whether all the textboxes are empty
// also check whether there is already a record
//existing with the same v_no
// From database getting values
try
connection = DataManager.createConnection();
PreparedStatement newRecord = connection.prepareStatement("insert into vendor_master values(?,?,?,?,?,?,?,?)");
newRecord.setString(1,vmBean.getVendorNumber());
newRecord.setString(2, vmBean.getVendorName());
newRecord.setString(3, vmBean.getAddress());
newRecord.setString(4, vmBean.getCity());
newRecord.setString(5, vmBean.getState());
newRecord.setString(6, vmBean.getZipcode());
newRecord.setString(7, vmBean.getTelephone());
newRecord.setString(8, vmBean.getFax());
newRecord.executeUpdate();
// Insert statement
// PreparedStatement pStmt = ....;
// The assign each value in the vmBean to the pStmt
// and finally execute the pStmt
} catch (Exception e) // end of try and begin of catch
e.printStackTrace();
} // end of catch
finally
if(connection != null)
DataManager.freeConnection(connection);
}// end of if
} // end of finally
} // end of addVendorMasterRecord
void vNewbtn_actionPerformed(ActionEvent e)
/* First empty all the textboxes */
venNotxt.setText(" ");
venNmtxt.setText(" ");
venAddtxt.setText(" ");
venCitytxt.setText(" ");
venSttxt.setText(" ");
venZiptxt.setText(" ");
venTeltxt.setText(" ");
venFaxtxt.setText(" ");
venNotxt.setEnabled(true);
venNmtxt.setEnabled(true);
venAddtxt.setEnabled(true);
venCitytxt.setEnabled(true);
venSttxt.setEnabled(true);
venZiptxt.setEnabled(true);
venTeltxt.setEnabled(true);
venFaxtxt.setEnabled(true);
vPrevbtn.setEnabled(false);
vNxtbtn.setEnabled(false);
void vNewbtn_keyPressed(KeyEvent e)
/* to delete records */
protected void removeVendorMasterRecord(VendorMasterBean vmBean )
Connection connection = null;
Vector masterRecords = new Vector();
// From database getting values
try
connection = DataManager.createConnection();
PreparedStatement deleteRecord = connection.prepareStatement("delete from vendor_master where v_no = ?");
deleteRecord.setString(1, vmBean.getVendorNumber());
deleteRecord.executeUpdate();
// Delete statement for where condition pass the vendor number as parameter
//"delete from vendor_master where v_no = ?"
//PreparedStatement pStmt = ....;
// The assign v_no in the vmBean to the pStmt
// and finally execute the pStmt
} catch (Exception e)
e.printStackTrace();
finally
// After executing this new record should be removed from the Vector of results.
// uncomment this
if(connection != null){
DataManager.freeConnection(connection);
} // end of finally
} // end of removeVendorMasterRecord
void vDelbtn_actionPerformed(ActionEvent e)
String vendorNumber = venNotxt.getText();
String vendorName = venNmtxt.getText();
String address = venAddtxt.getText();
String city = venCitytxt.getText();
String state = venSttxt.getText();
String zipCode = venZiptxt.getText();
String telephone = venTeltxt.getText();
String fax = venFaxtxt.getText();
VendorMasterBean vmBean = new VendorMasterBean(vendorNumber,vendorName, address, city, state, zipCode, telephone, fax);
removeVendorMasterRecord(vmBean);
void vDelbtn_keyPressed(KeyEvent e)
/* To get next record */
protected VendorMasterBean getNextRecord()
VendorMasterBean vmBean = new VendorMasterBean();
if(currentIndex < totalRecords)
vmBean =(VendorMasterBean)vendorMasterRecords.elementAt(++currentIndex);
if(currentIndex == (totalRecords-1) )
// reached last, so disable the Next button
vNxtbtn.setEnabled(false);
// enable the Previous
vPrevbtn.setEnabled(true);
} // end of if stmt
} // end of outer if stmt
return vmBean;
} // end of getnextrecord
void vNxtbtn_keyPressed(KeyEvent e)
void vNxtbtn_actionPerformed(ActionEvent e)
VendorMasterBean vmBean = getNextRecord();
venNotxt.setText(vmBean.getVendorNumber());
venNmtxt.setText(vmBean.getVendorName());
venAddtxt.setText(vmBean.getAddress());
venCitytxt.setText(vmBean.getCity());
venSttxt.setText(vmBean.getState());
venZiptxt.setText(vmBean.getZipcode());
venTeltxt.setText(vmBean.getTelephone());
venFaxtxt.setText(vmBean.getFax());
/* to get previous record */
protected VendorMasterBean getPreviousRecord()
VendorMasterBean vmBean = new VendorMasterBean();
if(currentIndex > 0)
vmBean =(VendorMasterBean)vendorMasterRecords.elementAt(--currentIndex);
if(currentIndex == 0)
// reached first so disable the Previous button
vPrevbtn.setEnabled(false);
// enable the Next
vNxtbtn.setEnabled(true);
} // end of inner if stmt
} // end of outer if stmt
return vmBean;
} // end of previousrecord
void vPrevbtn_actionPerformed(ActionEvent e)
VendorMasterBean vmBean = getPreviousRecord();
venNmtxt.setText(vmBean.getVendorName());
venAddtxt.setText(vmBean.getAddress());
venNotxt.setText(vmBean.getVendorNumber());
venCitytxt.setText(vmBean.getCity());
venSttxt.setText(vmBean.getState());
venZiptxt.setText(vmBean.getZipcode());
venTeltxt.setText(vmBean.getTelephone());
venFaxtxt.setText(vmBean.getFax());
void vPrevbtn_keyPressed(KeyEvent e)
void vUpdtbtn_actionPerformed(ActionEvent e)
/* when the update button is pressed , only the v_no is disabled
vPrevbtn.setEnabled(false);
vNxtbtn.setEnabled(false);
venNmtxt.setEnabled(true);
venAddtxt.setEnabled(true);
venCitytxt.setEnabled(true);
venSttxt.setEnabled(true);
venZiptxt.setEnabled(true);
venTeltxt.setEnabled(true);
venFaxtxt.setEnabled(true);
//then the user should press the save button
void vExitbtn_actionPerformed(ActionEvent e)
venMastFrame.setDefaultCloseOperation(venMastFrame.EXIT_ON_CLOSE);
void vExitbtn_keyPressed(KeyEvent e)
void vSavebtn_actionPerformed(ActionEvent e)
String vendorNumber = venNotxt.getText();
String vendorName = venNmtxt.getText();
String address = venAddtxt.getText();
String city = venCitytxt.getText();
String state = venSttxt.getText();
String zipCode = venZiptxt.getText();
String telephone = venTeltxt.getText();
String fax = venFaxtxt.getText();
VendorMasterBean vmBean = new VendorMasterBean(vendorNumber, vendorName,address, city, state, zipCode, telephone, fax);
addVendorMasterRecord(vmBean);
} // end of vSavebtn_actionPerformed
} // end of class vendormaster
//Adapter classes
class VendorMaster_vNxtbtn_actionAdapter implements java.awt.event.ActionListener
VendorMaster adaptee;
VendorMaster_vNxtbtn_actionAdapter(VendorMaster adaptee)
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e)
adaptee.vNxtbtn_actionPerformed(e);
class VendorMaster_vNxtbtn_keyAdapter extends java.awt.event.KeyAdapter
VendorMaster adaptee;
VendorMaster_vNxtbtn_keyAdapter(VendorMaster adaptee)
this.adaptee = adaptee;
public void keyPressed(KeyEvent e)
adaptee.vNxtbtn_keyPressed(e);
class VendorMaster_vPrevbtn_actionAdapter implements java.awt.event.ActionListener
VendorMaster adaptee;
VendorMaster_vPrevbtn_actionAdapter(VendorMaster adaptee)
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e)
adaptee.vPrevbtn_actionPerformed(e);
class VendorMaster_vPrevbtn_keyAdapter extends java.awt.event.KeyAdapter
VendorMaster adaptee;
VendorMaster_vPrevbtn_keyAdapter(VendorMaster adaptee)
this.adaptee = adaptee;
public void keyPressed(KeyEvent e)
adaptee.vPrevbtn_keyPressed(e);
class VendorMaster_vExitbtn_actionAdapter implements java.awt.event.ActionListener
VendorMaster adaptee;
VendorMaster_vExitbtn_actionAdapter(VendorMaster adaptee)
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e)
adaptee.vExitbtn_actionPerformed(e);
class VendorMaster_vExitbtn_keyAdapter extends java.awt.event.KeyAdapter
VendorMaster adaptee;
VendorMaster_vExitbtn_keyAdapter(VendorMaster adaptee)
this.adaptee = adaptee;
public void keyPressed(KeyEvent e)
adaptee.vExitbtn_keyPressed(e);
class VendorMaster_vNewbtn_actionAdapter implements java.awt.event.ActionListener
VendorMaster adaptee;
VendorMaster_vNewbtn_actionAdapter(VendorMaster adaptee)
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e)
adaptee.vNewbtn_actionPerformed(e);
class VendorMaster_vNewbtn_keyAdapter extends java.awt.event.KeyAdapter
VendorMaster adaptee;
VendorMaster_vNewbtn_keyAdapter(VendorMaster adaptee)
this.adaptee = adaptee;
public void keyPressed(KeyEvent e)
adaptee.vNewbtn_keyPressed(e);
class VendorMaster_vDelbtn_actionAdapter implements java.awt.event.ActionListener
VendorMaster adaptee;
VendorMaster_vDelbtn_actionAdapter(VendorMaster adaptee)
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e)
adaptee.vDelbtn_actionPerformed(e);
class VendorMaster_vDelbtn_keyAdapter extends java.awt.event.KeyAdapter
VendorMaster adaptee;
VendorMaster_vDelbtn_keyAdapter(VendorMaster adaptee)
this.adaptee = adaptee;
public void keyPressed(KeyEvent e)
adaptee.vDelbtn_keyPressed(e);
class VendorMaster_vUpdtbtn_actionAdapter implements java.awt.event.ActionListener {
VendorMaster adaptee;
VendorMaster_vUpdtbtn_actionAdapter(VendorMaster adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.vUpdtbtn_actionPerformed(e);
class VendorMaster_vSavebtn_actionAdapter implements java.awt.event.ActionListener {
VendorMaster adaptee;
VendorMaster_vSavebtn_actionAdapter(VendorMaster adaptee) {
this.adaptee = adaptee;
public void actionPerformed(ActionEvent e) {
adaptee.vSavebtn_actionPerformed(e);
the following code is the vendorMasterBean class file- this file helps 2 assign data to the various textboxes.
code:--------------------------------------------------------------------------------
package mainpage;
public class VendorMasterBean
private String vendorNumber;
private String vendorName;
private String address;
private String city;
private String state;
private String zipcode;
private String telephone;
private String fax;
public int Mandatory_Value;
public VendorMasterBean()
} // end of constructor
public VendorMasterBean(String vendorNumber,String vendorName,String address,String city,String state,String zipcode,String telephone,String fax)
setVendorNumber(vendorNumber);
setVendorName(vendorName);
setAddress(address);
setCity(city);
setState(state);
setZipcode(zipcode);
setTelephone(telephone);
setFax(fax);
/* Set Method */
public void setVendorNumber(String vendorNumber)
try
if ( (vendorNumber == null) || (vendorNumber.length() <= 0) || (vendorNumber.length() > 5))
throw new ValidateException(ValidateException.MANDATORY_VALUE,
"Vendor Number");
} // end of if stmt
else {
this.vendorNumber = vendorNumber;
} // end of else
catch(Exception e)
e.printStackTrace();
} // end of setVendorNumber
public void setVendorName(String vendorName)
try
if((vendorName == null) || (vendorName.length() <=0 && vendorName.length() > 25))
throw new ValidateException(ValidateException.MANDATORY_VALUE,
"Vendor Name");
}// end of if
else
this.vendorName = vendorName;
} // end of else
} // end of try
catch(Exception e)
e.printStackTrace();
}// end of set method
public void setAddress(String address)
try
if((address == null) ||(address.length() <=0 && address.length()>15))
throw new ValidateException(ValidateException.MANDATORY_VALUE,
"Address");
else
this.address = address;
catch(Exception e)
e.printStackTrace();
public void setCity(String city)
try
if((city == null) ||(city.length()<=0 && city.length() > 15))
throw new ValidateException(ValidateException.MANDATORY_VALUE,
"City");
else
this.city = city;
catch(Exception e)
e.printStackTrace();
public void setState(String state)
try
if((state == null) || (state.length()<=0 && state.length() >15))
throw new ValidateException(ValidateException.MANDATORY_VALUE,
"State");
else
this.state = state;
catch(Exception e)
e.printStackTrace();
public void setZipcode(String zipcode)
try
if((zipcode==null) ||(zipcode.length()<=0 && zipcode.length() > 10))
throw new ValidateException(ValidateException.MANDATORY_VALUE,
"Zipcode");
else
this.zipcode = zipcode;
catch(Exception e)
e.printStackTrace();
public void setTelephone(String telephone)
try
if((telephone==null) || (telephone.length() <= 0 && telephone.length()> 7))
throw new ValidateException(ValidateException.MANDATORY_VALUE,
"Telephone");
else
this.telephone = telephone;
catch(Exception e)
e.printStackTrace();
public void setFax(String fax)
try
if((fax == null) ||(fax.length()<=0 && fax.length() > 7))
throw new ValidateException(ValidateException.MANDATORY_VALUE,
"Fax");
else
this.fax = fax;
catch(Exception e)
e.printStackTrace();
/* Get method */
public String getVendorNumber()
return vendorNumber;
public String getVendorName()
return vendorName;
public String getAddress()
return address;
public String getCity()
return city;
public String getState()
return state;
public String getZipcode()
return zipcode;
public String getTelephone()
return telephone;
public String getFax()
return fax;
/* end of get method*/
} // end of class
2) the 2nd error is in the save button method , everytme i try 2 save the inserted record it gives me an error.
in case u need my mainpage.java, here it is
code:--------------------------------------------------------------------------------
package mainpage;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.JPanel;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
//import java.sql.Statement;
//import java.sql.ResultSet;
import oracle.jdbc.driver.OracleDriver;
import oracle.jdbc.OracleResultSet;
public class MainPage extends JFrame implements ActionListener
public static String title = "Warehouse Management System";
JFrame frame = new JFrame();
JMenuBar menuBar = new JMenuBar();
JMenu viewMenu = new JMenu("VIEW");
JMenuItem vendorItem = new JMenuItem("Vendor Master");
JMenuItem custItem= new JMenuItem("Customer Master");
JMenuItem salesrepItem= new JMenuItem("Sales Rep Master");
JMenuItem itemmastItem= new JMenuItem("Item Master");
JMenuItem orderItem= new JMenuItem("Order Master");
JMenuItem invoiceItem = new JMenuItem("Invoice Master");
JMenuItem payItem= new JMenuItem("Payment Master");
JMenu transactionMenu = new JMenu("EDIT");
JMenuItem veneditItem = new JMenuItem("Vendor");
JMenuItem custeditItem = new JMenuItem("Customer");
JMenuItem saleItem = new JMenuItem("Rep Information");
JMenuItem itmeditItem= new JMenuItem("Item");
JMenuItem ordeditItem= new JMenuItem("Order");
JMenuItem inveditItem = new JMenuItem("Invoice");
JMenuItem payeditItem = new JMenuItem("Payment");
JMenu exitMenu = new JMenu("EXIT

Answer 1

2 parts to this
Limit characters in jtextfield using a custom document
http://java.sun.com/docs/books/tutorial/uiswing/components/generaltext.html#customdocument
Specify a custom editor (jtextfield) for jtable (or column)
http://java.sun.com/docs/books/tutorial/uiswing/components/table.html#validtext