Essay About String Email And Connection Con

Database Connectivity
String name=jTextField1.getText();        String email=jTextField2.getText();        String mobile=jTextField3.getText();        if(name.isEmpty()) {            JOptionPane.showMessageDialog(this, “Name not Entered”);        }        else if(email.isEmpty()) {            JOptionPane.showMessageDialog(this, “Email not Entered”);        }        else if(mobile.isEmpty()) {            JOptionPane.showMessageDialog(this, “Mobile not Entered”);        }        else{        try{            Class.forName(“java.sql.DriverManager”);            Connection con=(Connection) DriverManager.getConnection(“jdbc:mysql://localhost:3306/pk”, “root”, “1234”);            Statement stmt=con.createStatement();            String query=”insert into contactdiary values(“+name+”,”+email+”,”+mobile+”);”;            stmt.executeUpdate(query);            JOptionPane.showMessageDialog(this, “Account added successfully.”);        }        catch(Exception e){            JOptionPane.showMessageDialog(this, e.getMessage());        }        }Add account   String name=jTextField1.getText();        int accno=Integer.parseInt(jTextField2.getText());       int deposit=Integer.parseInt(jTextField3.getText());       String address=jTextField4.getText();       String date=jTextField4.getText();              if(name.isEmpty()) {            JOptionPane.showMessageDialog(this, “Name not Entered”);        }        else if(accno==0) {            JOptionPane.showMessageDialog(this, “Email not Entered”);        }        else if(deposit==0) {            JOptionPane.showMessageDialog(this, “Deposit not Entered”);