public NewJFrame() {
    initComponents();
    try
    {
        Class.forName("java.sql.Driver");
      con=DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","admin");
    }

catch(Exception e)
{
    e.printStackTrace();
}

}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {

txtname .setText(""); txtfrom.setText(""); txtgen.setText(""); txtto .setText(""); txttname .setText(""); txtadd.setText(""); txtphone.setText(""); txttrno.setText("");

}                                        
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    {
        try
        {
          st=con.createStatement();
            int a=Integer.parseInt(txttrno.getText());
            String b=txttname.getText();
            String c=txtfrom.getText();
            String d=txtto.getText();
            String k=txtname.getText();
            String f=txtgen.getText();
            String g=txtadd.getText();
            int h=Integer.parseInt(txtphone.getText());
           rs=st.executeUpdate("insert into railway values("+a+",'"+b+"','"+c+"','"+d+"','"+e+"','"+f+"','"+g+"',"+h+")");
        }

con.close(); st.close(); rs.close(); }

catch(Exception e)
{
    e.printStackTrace();


}                                        

public static void main(String args[]) {
    java.awt.EventQueue.invokeLater(new Runnable() {
        public void run() {
            new NewJFrame().setVisible(true);
        }

full red line s coming guys..... can smone help me in removing errors from ds...........