Text Field not putting data in string and Jlable not repainting

[James Eman]

ok so at my school we use this website for practice quizes but half the time its down and half the time there a bug or something that crashed and you have to restart. so im trying to write a group of programs that we be the quizes but i have run into a few problems the first is the Jlabel dose not update and second is when you click the button it dose not put the data entered into the textfield into the string. i have just been learning GUIs for a week at most but have been taking classes for Java its self for a littel less then a year so dont hate on my code please its not perfect.

Heres the code

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
 
public class GUI extends Frame implements ActionListener
{
    int i=0;
    JLabel l1 = new JLabel();
    JTextField tf1 = new JTextField(2);
    JButton b1;
    String temp;
    public GUI()
    {
        GUI_1();
    }
 
    public void GUI_1()
    {
        int i=0;
        String temp;
        Game game = new Game(26);
        JFrame jf=new JFrame();
        jf.setTitle("testGUI");
        jf.setSize(500,300);
        JLabel l1=new JLabel("Enter the "+game.getE(i)+"?");
        JTextField tf1=new JTextField();
        JButton b1=new JButton("Submit");
        b1.addActionListener(this);
        temp=tf1.getText();
        Container pane=jf.getContentPane();
        pane.setLayout(new GridLayout(3,1) );
        pane.add(l1);
        pane.add(tf1);
        pane.add(b1);
        temp=tf1.getText();
        jf.setDefaultCloseOperation(jf.EXIT_ON_CLOSE);
        jf.setVisible(true);
    }
 
    public void actionPerformed(ActionEvent e)
    {
        if(true==e.getActionCommand().equals("Submit"))
        {
            submit();
        }
    }
 
    public void submit()
    {
        JFrame jf=new JFrame();
        Game game = new Game(26);
        System.out.println("Passed button");
        l1.setText("Enter the"+game.getE(i+1)+"?");
        repaint();
        temp=tf1.getText();
        System.out.println("Temp = "+temp);
        if(temp!=null || temp != "" || temp != " ")
        {
            System.out.println("Passed if Else");
            game.play(temp,i);
            System.out.println("Passed Answer");
            if(game.getB()==false)
            {
                JOptionPane.showMessageDialog(jf,"You entered "+temp+" for "+game.getE(i)+" and the answer was "+game.getS(i),"Incorret",JOptionPane.ERROR_MESSAGE);
            }
            else
            {
                JOptionPane.showMessageDialog(jf,"Correct");
            }
            i++;
        }
        else
        {
            JOptionPane.showMessageDialog(jf,"You must answer","Invalid Answer",JOptionPane.ERROR_MESSAGE);
        }
    }
}

[Michael Dunn]

a) in your class declarations you have this
JTextField tf1 = new JTextField(2);

b) in public void GUI_1() you have this
JTextField tf1=new JTextField();
...
pane.add(tf1);

the tf1 in (b) is the one you see on the screen
the tf1 in (a) is the one accessed by the listener (it is not on the screen, so nothing is entered into it)

either remove JTextField tf1=new JTextField() from (b), or change it to
tf1=new JTextField();

see how you go with that change

[James Eman]

thank i never noticed i did that.