class MyChangeListener extends DatabaseChangeListener

 {

 public boolean onNewButtonClick()

 {

 //order No, is the primary key in this table, we don't want the user to create

 //a order number , we want to automatically create a order number , everytime

 //user inserts a new record

 Vector insertVector = new Vector();

 //this is just for example, don't follow this example of creating unique key because it may create duplicates

 insertVector.addElement(new Integer(Math.abs(randomOrderNumber.nextInt())));

 insertVector.addElement("");

 //Float & double doesn't work with simpletext , so used the default string

 //usually supply the correct datatype

 //insertVector.addElement( new Float(0.0));

 insertVector.addElement("");

 insertVector.addElement("");

 insertVector.addElement("");

 insertVector.addElement("");

 insertVector.addElement("");

 insertVector.addElement("");

 insertVector.addElement("");

 insertVector.addElement("");

 insertVector.addElement("");

 try{

 dBTable1.insert(insertVector);

 }

 catch(Exception e)

 {

 JOptionPane.showMessageDialog( CustomerOrderDemo.this,e.getMessage(),"Error",JOptionPane.OK_OPTION);

 }

 //since we have already inserted the record, return true, so that

 //quicktable doesn't insert the default record

 return false;

 }

 //there are more methods in this class beforeUpdate, afterUpdate, beforeInsert, afterInsert, onDeleteButtonClick

 //you can use them too.

 }