All jTextFields Fields Freeze when I Select the JComboBox - jtextfield

Question

I am generating voucher no with the concatenation of jdatechooer and jCombobox, when user selects the jcombobox it creates a voucher no and put it in the jTextField1 and passes focus to jTextField2. Till that the Application works fine. However, after submitting data, after two or three times, when I create a voucher all the JTextFields freezes and I cannot put the data into database. enter code here
public class Voucher extends javax.swing.JInternalFrame {
private java.util.Date Current_Date ;
private java.sql.Date sqlDate;
private Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
private SimpleDateFormat dateformat =new SimpleDateFormat("HH:mm:ss");
private SimpleDateFormat simpleformat =new SimpleDateFormat("yyyy-MM-dd");
private Connection connection;
private PreparedStatement preparedStatement;
private ResultSet resultSet, AccountChartSet;
private DBConnection dbc =null;
private StringTokenizer xToken ;
private String Query, CreatedVoucher, DateVal;
private String firstval,secondVal;
private Integer MaxVoucher , VoucherType, COF;
private Double Balance=0.0;
private Double DEBIT = 0.0 , CREDIT = 0.0;
private int row = 0;
private DefaultTableModel dmodel = new DefaultTableModel(new Object[][]
{
{ null, null, null , null, null },
{ null, null, null , null, null },
{ null, null, null , null, null },
{ null, null, null , null, null }
},new String []
{
"Account Code", "Acct Name", "DR /CR", "Amount"
}){
public boolean isCellEditable(int rowIndex, int mColIndex) {
return false;
}
};
/**
* Creates new form Voucher
*/
public Voucher() {
initComponents();
setTitle("Create Voucher");
dbc = new DBConnection();
connection = dbc.dbcon();
dmodel.setNumRows(0);
Current_Date = new java.util.Date();
jDateChooser1.setDate(Current_Date);
jTextField6.setText(Balance.toString());
FetchCOF();
setVisible(true);
}
private void initComponents() {
jScrollPane2 = new javax.swing.JScrollPane();
jList1 = new javax.swing.JList<>();
jButton1 = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jTextField6 = new javax.swing.JTextField();
jTextField5 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jLabel7 = new javax.swing.JLabel();
jLabel8 = new javax.swing.JLabel();
jLabel9 = new javax.swing.JLabel();
jComboBox2 = new javax.swing.JComboBox<>();
jTextField3 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jDateChooser1 = new com.toedter.calendar.JDateChooser();
jComboBox1 = new javax.swing.JComboBox<>();
jTextField1 = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jPanel1 = new javax.swing.JPanel();
jLabel10 = new javax.swing.JLabel();
jList1.setModel(new javax.swing.AbstractListModel<String>() {
String[] strings = { "Item 1", "Item 2", "Item 3", "Item 4", "Item 5" };
public int getSize() { return strings.length; }
public String getElementAt(int i) { return strings[i]; }
});
jScrollPane2.setViewportView(jList1);
setBackground(new java.awt.Color(69, 105, 159));
setClosable(true);
getContentPane().setLayout(null);
jButton1.setFont(new java.awt.Font("Segoe UI", 0, 12));
jButton1.setIcon(new javax.swing.ImageIcon("D:\\GTradingPK\\src\\gtradingpk\\images\\floppy-disk.png")); // NOI18N
jButton1.setText("Submit");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
getContentPane().add(jButton1);
jButton1.setBounds(10, 385, 593, 50);
jTable1.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
jTable1.setModel(dmodel);
jTable1.setRowHeight(24);
jTable1.setShowGrid(true);
jTable1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTable1MouseClicked(evt);
}
});
jScrollPane1.setViewportView(jTable1);
getContentPane().add(jScrollPane1);
jScrollPane1.setBounds(10, 210, 593, 170);
jTextField6.setEditable(false);
jTextField6.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
getContentPane().add(jTextField6);
jTextField6.setBounds(453, 180, 150, 25);
jTextField5.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
jTextField5.addFocusListener(new java.awt.event.FocusAdapter() {
public void focusLost(java.awt.event.FocusEvent evt) {
jTextField5FocusLost(evt);
}
});
getContentPane().add(jTextField5);
jTextField5.setBounds(171, 180, 280, 25);
jTextField4.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
getContentPane().add(jTextField4);
jTextField4.setBounds(10, 180, 160, 25);
jLabel7.setFont(new java.awt.Font("Arial", 0, 12)); // NOI18N
jLabel7.setForeground(new java.awt.Color(255, 255, 255));
jLabel7.setText("Amount");
getContentPane().add(jLabel7);
jLabel7.setBounds(10, 162, 100, 14);
jLabel8.setFont(new java.awt.Font("Arial", 0, 12)); // NOI18N
jLabel8.setForeground(new java.awt.Color(255, 255, 255));
jLabel8.setText("Narration");
getContentPane().add(jLabel8);
jLabel8.setBounds(171, 162, 100, 14);
jLabel9.setFont(new java.awt.Font("Arial", 0, 12)); // NOI18N
jLabel9.setForeground(new java.awt.Color(255, 255, 255));
jLabel9.setText("Balance");
getContentPane().add(jLabel9);
jLabel9.setBounds(453, 162, 100, 14);
jComboBox2.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
jComboBox2.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Select", "Debit", "Credit" }));
getContentPane().add(jComboBox2);
jComboBox2.setBounds(453, 130, 150, 25);
jTextField3.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
getContentPane().add(jTextField3);
jTextField3.setBounds(171, 130, 280, 25);
jTextField2.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
jTextField2.addFocusListener(new java.awt.event.FocusAdapter() {
public void focusLost(java.awt.event.FocusEvent evt) {
jTextField2FocusLost(evt);
}
});
getContentPane().add(jTextField2);
jTextField2.setBounds(10, 130, 160, 25);
jLabel4.setFont(new java.awt.Font("Arial", 0, 12)); // NOI18N
jLabel4.setForeground(new java.awt.Color(255, 255, 255));
jLabel4.setText("Acct Code");
getContentPane().add(jLabel4);
jLabel4.setBounds(10, 110, 120, 20);
jLabel5.setFont(new java.awt.Font("Arial", 0, 12)); // NOI18N
jLabel5.setForeground(new java.awt.Color(255, 255, 255));
jLabel5.setText("Acct Name");
getContentPane().add(jLabel5);
jLabel5.setBounds(171, 110, 120, 20);
jLabel6.setFont(new java.awt.Font("Arial", 0, 12)); // NOI18N
jLabel6.setForeground(new java.awt.Color(255, 255, 255));
jLabel6.setText("Debit / Credit");
getContentPane().add(jLabel6);
jLabel6.setBounds(453, 110, 120, 20);
jDateChooser1.setDateFormatString("dd-MM-yyyy");
jDateChooser1.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
getContentPane().add(jDateChooser1);
jDateChooser1.setBounds(453, 80, 150, 25);
jComboBox1.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
jComboBox1.setModel(new javax.swing.DefaultComboBoxModel<>(new String[] { "Select Voucher Type", "1-JV", "2-RV", "3-PV", "4-CV" }));
jComboBox1.addItemListener(new java.awt.event.ItemListener() {
public void itemStateChanged(java.awt.event.ItemEvent evt) {
jComboBox1ItemStateChanged(evt);
}
});
getContentPane().add(jComboBox1);
jComboBox1.setBounds(171, 80, 280, 25);
jTextField1.setEditable(false);
jTextField1.setFont(new java.awt.Font("Tahoma", 0, 12)); // NOI18N
jTextField1.setFocusable(false);
jTextField1.setRequestFocusEnabled(false);
getContentPane().add(jTextField1);
jTextField1.setBounds(10, 80, 160, 25);
jLabel1.setFont(new java.awt.Font("Arial", 0, 12)); // NOI18N
jLabel1.setForeground(new java.awt.Color(255, 255, 255));
jLabel1.setText("Voucher Code");
getContentPane().add(jLabel1);
jLabel1.setBounds(10, 64, 120, 14);
jLabel2.setFont(new java.awt.Font("Arial", 0, 12)); // NOI18N
jLabel2.setForeground(new java.awt.Color(255, 255, 255));
jLabel2.setText("Voucher Type");
getContentPane().add(jLabel2);
jLabel2.setBounds(171, 64, 120, 14);
jLabel3.setFont(new java.awt.Font("Arial", 0, 12)); // NOI18N
jLabel3.setForeground(new java.awt.Color(255, 255, 255));
jLabel3.setText("Date");
getContentPane().add(jLabel3);
jLabel3.setBounds(453, 64, 120, 14);
jPanel1.setBackground(new java.awt.Color(46, 26, 71));
jPanel1.setLayout(null);
jLabel10.setFont(new java.awt.Font("Segoe UI", 0, 20)); // NOI18N
jLabel10.setForeground(new java.awt.Color(255, 255, 255));
jLabel10.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
jLabel10.setText("CREATE VOUCHER");
jPanel1.add(jLabel10);
jLabel10.setBounds(0, 10, 610, 30);
getContentPane().add(jPanel1);
jPanel1.setBounds(0, 0, 620, 60);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
if(jTextField1.getText().equals(""))
{
JOptionPane.showMessageDialog(null, "Voucher No is Missing ....");
}
else if (jComboBox1.getSelectedIndex() == 0)
{
JOptionPane.showMessageDialog(null, "Voucher Type is Missing ....");
jComboBox1.grabFocus();
}
else if(jTextField5.getText().equalsIgnoreCase(""))
{
JOptionPane.showMessageDialog(null, "Narration is Missing ....");
jTextField5.grabFocus();
}
else if (Balance != 0 )
{
JOptionPane.showMessageDialog(null, "Debit / Credit is not Equal");
}
else
{
double damount = 0.0 , camount = 0.0, balanceamt = 0.0;
try
{
CreateValues();
Current_Date = jDateChooser1.getDate();
String datestamp = simpleformat.format(Current_Date.getTime());
String timeStamp = new SimpleDateFormat("HH:mm:ss").format(Calendar.getInstance().getTime());
String DateTimess = datestamp+" "+timeStamp;
xToken = new StringTokenizer(jComboBox1.getSelectedItem().toString(), "-");
String voutype = xToken.nextToken().trim();
Integer voint= Integer.parseInt(voutype);
connection.setAutoCommit(false);
Query = "insert into voucher(voucherno, vdate, cof, decr, naration, debitamount,creditamount, balance, void,statuss, xdate) values(?,?,?,?,?,?,?,?,?,?,?) ";
preparedStatement = connection.prepareStatement(Query);
for(int x = 0 ; x<jTable1.getRowCount(); x++)
{
preparedStatement.setString(1, jTextField1.getText());
preparedStatement.setObject(2,DateTimess);
preparedStatement.setLong(3 , Long.parseLong(jTable1.getValueAt(x, 0).toString()));
preparedStatement.setString(4, jTable1.getValueAt(x , 2).toString());
preparedStatement.setString(5, jTextField5.getText());
if(jTable1.getValueAt(x , 2).toString().equalsIgnoreCase("Debit"))
{
damount = Double.parseDouble( jTable1.getValueAt(x, 3).toString() );
balanceamt = damount - camount;
preparedStatement.setDouble(6, damount);
preparedStatement.setDouble(7, camount);
preparedStatement.setDouble(8, balanceamt);
}
else {
camount = Double.parseDouble( jTable1.getValueAt(x, 3).toString() );
balanceamt = damount - camount;
preparedStatement.setDouble(6, damount);
preparedStatement.setDouble(7, camount);
preparedStatement.setDouble(8, balanceamt);
}
preparedStatement.setInt(9 , voint);
preparedStatement.setString(10 , "u");
preparedStatement.setObject(11, Current_Date);
preparedStatement.addBatch();
damount = 0.0 ;
camount = 0.0;
balanceamt = 0.0;
}
preparedStatement.executeBatch();
Query = "insert into vouchercounter values(?,?,?)";
preparedStatement = connection.prepareStatement(Query);
preparedStatement.setInt(1 , MaxVoucher);
preparedStatement.setObject(2 , Current_Date );
preparedStatement.setString(3, jTextField1.getText());
preparedStatement.execute();
connection.commit();
//System.out.println(resultSet.isClosed());
JOptionPane.showMessageDialog(null, "Voucher Saved Sccessfully....");
MaxVoucher++;
jTextField1.setText("");
jTextField2.setText("");
jTextField3.setText("");
jTextField4.setText("");
jTextField5.setText("");
jTextField6.setText("");
//jTextField2.requestFocus();
jComboBox1.setSelectedIndex(0);
jComboBox2.setSelectedIndex(0);
dmodel.setNumRows(0);
row=0;
}catch(SQLException sskl){System.out.println(sskl.getMessage());}
} // else closes
// TODO add your handling code here:
}
private void jTable1MouseClicked(java.awt.event.MouseEvent evt) {
if(evt.getClickCount() == 2 && !evt.isConsumed())
{
evt.consume();
dmodel.removeRow(jTable1.getSelectedRow());
row--;
}
// TODO add your handling code here:
}
private void jTextField5FocusLost(java.awt.event.FocusEvent evt) {
if(jTextField2.getText().equals(""))
{
jTextField2.requestFocus();
}
else if (jTextField3.getText().equals(""))
{
jTextField3.requestFocus();
}
else if (jTextField4.getText().equals(""))
{
jTextField4.requestFocus();
}
else if (jTextField5.getText().equals(""))
{
jTextField5.requestFocus();
}
else if (jComboBox2.getSelectedIndex() == 0)
{
JOptionPane.showMessageDialog(null, "Please Select Debit / Credit");
jComboBox2.requestFocus();
}
else
{
dmodel.addRow(new Object[]{"","","",""});
jTable1.setValueAt(jTextField2.getText(), row, 0);
jTable1.setValueAt(jTextField3.getText(), row, 1);
jTable1.setValueAt(jComboBox2.getSelectedItem().toString(), row, 2);
jTable1.setValueAt(jTextField4.getText(), row, 3);
CalculateValues();
jComboBox2.setSelectedIndex(0);
jTextField2.setText("");
jTextField3.setText("");
jTextField4.setText("");
jTextField2.grabFocus();
row++;
}
// TODO add your handling code here:
}
private void jTextField2FocusLost(java.awt.event.FocusEvent evt) {
boolean cofound = false;
if( jTextField2.getText().length() >= 4)
{
COF = Integer.parseInt(jTextField2.getText());
try{
AccountChartSet.beforeFirst();
while(AccountChartSet.next())
{
if (COF == AccountChartSet.getInt(1))
{
jTextField3.setText(AccountChartSet.getString(2));
cofound = true;
break;
}
}
if( (COF < 1100) || (COF > 9999))
{
// System.out.println("I am here");
JOptionPane.showMessageDialog(jTextField2, "Invalid Chart of Acctount");
jTextField2.requestFocus();
}
}catch(Exception zsdf){ System.out.println(zsdf.getMessage());}
}
// TODO add your handling code here:
}
private void jComboBox1ItemStateChanged(java.awt.event.ItemEvent evt) {
/* if(evt.getStateChange() == ItemEvent.SELECTED && jComboBox1.getSelectedIndex() > 0 )
{
CreateValues();
}
*/
CreateValues();
// TODO add your handling code here:
}
void CalculateValues()
{
Balance=0.0;
CREDIT =0.0;
DEBIT = 0.0;
if(jTable1.getRowCount() > 0)
{
for (int x = 0 ; x<jTable1.getRowCount(); x++)
{
if(jTable1.getValueAt(x, 2).toString().equals("Debit"))
{
DEBIT = DEBIT + Double.parseDouble(jTable1.getValueAt(x, 3).toString()) ;
}
else //(jTable1.getValueAt(x, 2).toString().equals("Crdit"))
{
CREDIT = CREDIT + Double.parseDouble(jTable1.getValueAt(x, 3).toString()) ;
}
}
Balance = DEBIT- CREDIT;
jTextField6.setText(Balance.toString());
} // outer if closes
}
void CreateValues()
{
if (jComboBox1.getSelectedIndex()> 0)
{
Current_Date = jDateChooser1.getDate();
DateVal = simpleformat.format(Current_Date);
//sqlDate = new java.sql.Date(Current_Date.getTime());
xToken = new StringTokenizer(jComboBox1.getSelectedItem().toString() , "-");
firstval = xToken.nextToken().trim();
secondVal= xToken.nextToken().trim();
CreatedVoucher = secondVal+"-"+DateVal+"-"+MaxVoucher.toString();
jTextField1.setText(CreatedVoucher);
}
}
void FetchCOF()
{
try{
Query = "select cof, cofname from accountchart ";
preparedStatement = connection.prepareStatement(Query, ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
AccountChartSet = preparedStatement.executeQuery();
Query = "select count(vcounter) from vouchercounter ";
preparedStatement = connection.prepareStatement(Query, ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_UPDATABLE);
resultSet = preparedStatement.executeQuery();
resultSet.next();
MaxVoucher = resultSet.getInt(1);
MaxVoucher++;
// jTextField2.requestFocus();
}catch(SQLException sdfsda){}
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JComboBox<String> jComboBox1;
private javax.swing.JComboBox<String> jComboBox2;
private com.toedter.calendar.JDateChooser jDateChooser1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel10;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JLabel jLabel9;
private javax.swing.JList<String> jList1;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane2;
private javax.swing.JTable jTable1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
private javax.swing.JTextField jTextField5;
private javax.swing.JTextField jTextField6;
// End of variables declaration
}