Search code examples
javaswingjframejspinner

Convert JSpinner value to a new int


I am using WindowBuilder to create a GUI. I'm kinda new to JFrame and I have a problem: I added a JSpinner and I want to save the number that I put in my spinner to an int so I can use it later on. Can someone please help me? Thanks.

import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JTextField;
import java.awt.BorderLayout;
import javax.swing.SwingConstants;
import java.awt.Font;
import javax.swing.JSpinner;
import javax.swing.SpinnerNumberModel;
import java.awt.Color;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;


public class frame1 {

    private JFrame frame;
    private JTextField txtHoeveelEuroWil;

    /**
     * Launch the application.
     */
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    frame1 window = new frame1();
                    window.frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the application.
     */
    public frame1() {
        initialize();
    }

    /**
     * Initialize the contents of the frame.
     */
    private void initialize() {
        frame = new JFrame();
        frame.setBounds(100, 100, 450, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().setLayout(null);

        JSpinner spinner = new JSpinner();
        spinner.setModel(new SpinnerNumberModel(20, 20, 500, 20));
        spinner.setBounds(116, 100, 200, 50);
        frame.getContentPane().add(spinner);

        int value;

        JButton btnNewButton = new JButton("OK");
        btnNewButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {

                //value=Integer.parseint ???

                //what should I type here to save the number that I entered
                //in the spinner?


            }
        });
        btnNewButton.setBounds(172, 177, 89, 32);
        frame.getContentPane().add(btnNewButton);
    }

}

Solution

  • Try this

     try {
            spinner.commitEdit();
        }
        catch (ParseException pe) {{
            // Edited value is invalid, spinner.getValue() will return
            // the last valid value, you could revert the spinner to show that:
            JComponent editor = spinner.getEditor()
            if (editor instanceof DefaultEditor) {
                ((DefaultEditor)editor).getTextField().setValue(spinner.getValue());
            }
            // reset the value to some known value:
            spinner.setValue(fallbackValue);
            // or treat the last valid value as the current, in which
            // case you don't need to do anything.
        }
        int value = (Integer)spinner.getValue();