Question

I am working on a java gui application hard coding without any netbeans help. I am using the box layout for my gui. My question is simple from what I see online boxlayout should stack elements on top of each other. However, I have a textarea(x,y) a toggle button and another textarea(x,y) when this is displayed there is a gap between my first text area and the toggle button and a gap between the toggle button and the 2nd textarea. Why are they not being stacked!
Thanks,

Answer 1

Here’s an example of an SSCCE that tries to demonstrate your problem. Perhaps you can modify it to show us what’s going on:

import java.awt.*;
import javax.swing.*;

public class BoxLayoutEg {
   public static void main(String[] args) {
      JTextArea area1 = new JTextArea(10, 20);
      JToggleButton toggleBtn = new JToggleButton("Foo");
      JTextArea area2 = new JTextArea(10, 20);

      JPanel toggleBtnPanel = new JPanel();
      toggleBtnPanel.setLayout(new FlowLayout(FlowLayout.CENTER, 0, 0));
      // toggleBtnPanel.setLayout(new GridLayout());
      toggleBtnPanel.add(toggleBtn);

      JPanel mainJPanel = new JPanel();
      mainJPanel.setLayout(new BoxLayout(mainJPanel, BoxLayout.PAGE_AXIS));

      mainJPanel.add(new JScrollPane(area1));
      mainJPanel.add(toggleBtnPanel);
      mainJPanel.add(new JScrollPane(area2));

      JOptionPane.showMessageDialog(null, mainJPanel);

   }
}