Java Database Connectivity (JDBC)

here is the code sample....

private void getActionPerformed(java.awt.event.ActionEvent evt) {
try{
query="select ptscno,ptbcrno,ptprno,trunc(to_date(ptprdt,'dd-mm-yyyy')),ptblamt,ptmisamt,ptmisamtcd,ptreconchg from payment where ptprno="+bcrc_prno.getText();
rs=stmt.executeQuery(query);
if(rs.next())
{
bcrc_scno.setText(rs.getString(1));
bcrc_prno.setText(rs.getString(3));
bcrc_bcrcno.setText(rs.getString(2));
bcrc_prdt.setText(rs.getDate(4).toString());
bcrc_billamt.setText(rs.getString(5));
bcrc_misamt.setText(rs.getString(6));
bcrc_misamtcd.setText(rs.getString(7));
bcrc_reconchg.setText(rs.getString(8));
dissable(true); //user defined function to dissable the text fileds
}
else
{
new opendialog(this,"ERROR MESSAGE ...").show();
bcrc_scno.setText("");
bcrc_bcrcno.setText("");
bcrc_prno.setText("");
bcrc_prdt.setText("");
bcrc_billamt.setText("");
bcrc_misamt.setText("");
bcrc_misamtcd.setText("");
bcrc_reconchg.setText("");
bcrc_prno.requestFocus();
dissable(false);
}

}catch(SQLException p){
System.err.print("SQLException :");
System.err.println(p.getMessage());
try{
con.close();
}catch(SQLException e)
{
System.err.print("SQLException :");
System.err.println(e.getMessage());
}
System.exit(2);
}
}


private void updateActionPerformed(java.awt.event.ActionEvent evt) {
try{

if(bcrc_scno.isEditable())
{
rs.updateString(1, bcrc_scno.getText());
rs.updateString(2, bcrc_bcrcno.getText());
rs.updateString(3, bcrc_prno.getText());
String dt=bcrc_prdt.getText();
java.sql.Date myDate = java.sql.Date.valueOf(dt);
rs.updateDate(4, myDate);
rs.updateString(5, bcrc_billamt.getText());

if(!bcrc_misamt.getText().equals(""))
rs.updateString(6,bcrc_misamt.getText());

if(!bcrc_misamtcd.getText().equals(""))
rs.updateString(7,bcrc_misamtcd.getText());

if(!bcrc_reconchg.getText().equals(""))
rs.updateString(8,bcrc_reconchg.getText());

rs.updateRow();

con.commit();
bcrc_scno.setText("");
bcrc_bcrcno.setText("");
bcrc_prno.setText("");
bcrc_prdt.setText("");
bcrc_billamt.setText("");
bcrc_misamt.setText("");
bcrc_misamtcd.setText("");
bcrc_reconchg.setText("");
bcrc_prno.requestFocus();
dissable(false);
}
else
{
new opendialog(this,"ERROR MESSAGE ...").show();
bcrc_scno.setText("");
bcrc_bcrcno.setText("");
bcrc_prno.setText("");
bcrc_prdt.setText("");
bcrc_billamt.setText("");
bcrc_misamt.setText("");
bcrc_misamtcd.setText("");
bcrc_reconchg.setText("");
bcrc_prno.requestFocus();
dissable(false);
}
}catch(SQLException p){
System.err.print("SQLException :");
System.err.println(p.getMessage());
try{
con.close();
}catch(SQLException e)
{
System.err.print("SQLException :");
System.err.println(e.getMessage());
}
System.exit(2);
}
}

the idea is to get the data and update it again

getActionPerformed is executed where get button is clicked that will get the data
and updateActionPerformed is executed when update button is clicked that will update the data

the problem is after i get the data from database and put it on some textfields and change some text and then click update button i am getting this error
SQLException ORA-00927: missing equal sign

i am unable to figure out kindly help.
thanq in advance

stalin.