JTextField text display

Question

I am trying to get some text displayed inside JTextField, the text should be taken from an ArrayList to which i add text using the addText method. I also want to be able to cycle through the Strings in the ArrayList using buttons.

Text class

import java.util.ArrayList;
public class Text {
    private String text;

    public Text (String text)
    {
        this.text=text;
    }

    public String getText()
    {
        return text;
    }
}

TextDisplay class

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.ArrayList;
public class TextDisplay
{
    private JFrame frame;
    private JTextField text;
    private JButton next;
    private JButton back;
    private ArrayList<Text> someText;
    public TextDisplay ()
    {
        makeFrame();
        someText= new ArrayList<Text>();
    }
    public void addText(String text)
    {
        Text sText = new Text(text);
        someText.add(sText);
    }
    private void makeFrame()
       {frame = new JFrame("text");    
        Container contentPane = frame.getContentPane();


        JPanel panel = new JPanel();
        panel.setLayout(new GridLayout(1, 0));

        text = new JTextField();
        text.setEditable(false);
        contentPane.add(text, BorderLayout.NORTH);   

        back = new JButton("back");
        panel.add(back);
        next = new JButton("next");
        panel.add(next);

        contentPane.add(panel,BorderLayout.WEST);
        frame.pack();

        frame.setVisible(true);
    }
}

Can someone explain or show an example to me of how to achieve this?

Answer 1

First you need to add an ActionListener to your button, then add the logic of getting the value from the ArrayList.

For Example:

int index = -1;
next.addActionListener(new ActionListener() {

    @Override
    public void actionPerformed(ActionEvent e) {
            index++;
            text.setText(someText.get(index).getText());
        }
    });

Then you could add a variable index to get the next element in the ArrayList and then update that variable when you get the element.