[FIXED] error check the empty textField of int values

Issue

Here is the code:

String name = txtname.getText();
         int id = Integer.parseInt(txtid.getText());
        int pass = Integer.parseInt(txtpass.getText());
         String day = Date.getSelectedItem().toString();


    if (txtname.getText().isEmpty() ||txtid.getText().isEmpty()||Date.getSelectedIndex()==0 || event == null||time==null) {


        JOptionPane.showMessageDialog(null, "you should add all information", "error", JOptionPane.ERROR_MESSAGE);



    }                                       

    else {

        ((DefaultListModel) jList1.getModel()).addElement(txtname.getText() + " " + txtpass.getText() + "(" + Date.getSelectedItem() + ") "+event+", "+time);
   try{
               Statement stmt = con.createStatement();
                stmt.execute("INSERT INTO company(name,id) VALUES('"+name+"',"+id+");");
                stmt.execute("INSERT INTO events(pass,time,status,day,companyId) VALUES("+pass+",'"+time+"','"+event+"','"+day+"',"+id+");");

               JOptionPane.showMessageDialog(this, "Record Submit");

          }catch(Exception ex){
              JOptionPane.showMessageDialog(this, ex);

             } 


    }


    this.txtname.setText(null);
    this.txtpass.setText(null);
    this.txtid.setText(null);
    this.Date.setSelectedIndex(0);
    this.jCheckBox1.setSelected(false);
    this.jCheckBox2.setSelected(false);
    this.jCheckBox3.setSelected(false);


}

This is the error:

java.lang.NumberFormatException: For input string: ""

The code is work probably with string textFields but does not work with integer textField.
It works probably if I remove:

 txtid.getText().isEmpty()

please show me how can I fix the code?

Solution

It seems txtid.getText() is returning "". Is that correct? The string "" is not numeric and cannot be parsed by Integer.parseInt(). One thing you can do is use a try, catch. If it throws a NumberFormatException error, you can then handle it accordingly.

Answered By - Sri