get text from a text field using actionlisterns

Question

This is probably a rather stupid problem but I am playing around with gridbag layouts and I am trying to build a basic login screen that sends the users information to another class that checks with a mysql DB. but before I do that I have to find a way to listen for my login button being pressed and then get the text from the text fields (this last part is where I am running into problems). I have tried declaring the JTextField outside of the addComponentsToPane method but to no avail.

here is my code so far

also I apologies to any neatness I am new to this site and am not yet knowledgeable enought to format my code correctly.

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package GUI;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;


/**
 *
 * @author TeslaSolari
 */
public class login {

    public void login() {
        createAndShowGUI();
    }

    private static void createAndShowGUI() {
        //Create and setup the windows
        JFrame frame = new JFrame("Login");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Setup the content pane
        addComponentsToPane(frame.getContentPane());

        //Display the window
        frame.pack();
        frame.setVisible(true);
    }

    public static void addComponentsToPane(Container pane) {
        pane.setComponentOrientation(ComponentOrientation.LEFT_TO_RIGHT);

        //parts
        JButton login;
        JTextField user;
        JLabel[] label = new JLabel[10];
        JPasswordField pass;
        ActionListener loginB = null;

        pane.setLayout(new GridBagLayout());
        //Cpnstraints
        GridBagConstraints c = new GridBagConstraints();
        c.fill = GridBagConstraints.CENTER;

        // Buttons
        login = new JButton("Login");
        c.weightx = 0.5;
        c.fill = GridBagConstraints.HORIZONTAL;
        c.gridx = 0;
        c.gridy = 4;
        pane.add(login, c);
        login.addActionListener(new Action());

        // textfields / labels
        label[0] = new JLabel("Username");
        user = new JTextField();
        c.weightx = 0.5;
        c.gridx = 0;
        c.gridy = 0;
        pane.add(label[0], c);
        c.weightx = 0.5;
        c.gridx = 0;
        c.gridy = 1;
        pane.add(user, c);

        label[1] = new JLabel("Password");
        pass = new JPasswordField();
        c.weightx = 0.5;
        c.gridx = 0;
        c.gridy = 2;
        pane.add(label[1], c);
        c.weightx = 0.5;
        c.gridx = 0;
        c.gridy = 3;
        pane.add(pass, c);


    }

    //Actions

    static class Action implements ActionListener{
        public void actionPerformed (ActionEvent e){
            System.out.println(label[]);
        }
    }

}

You can find an example of just this using a JOptionPane [here](http://stackoverflow.com/a/9852059/522444). — Hovercraft Full Of Eels, Jul 22 '12 at 23:10

score 1 · Accepted Answer · answered Jul 22 '12 at 23:50

It seems your solution is right (moving the declarations JTextField declarations outside the method), but you might have missed declaring them as static (according to the rest of your class)

private static JTextField user;
private static JPasswordField pass;

get text from a text field using actionlisterns

1 Answers1