New starter layouts flow and border

Question

Hi
I am teaching my self Java so I expect this is a simple mistake
set-up a class extending a JFrame
set-up a JPanel with a flow layout
added 5 checks boxes
this worked as I expected with the check box's moving down to the next line
I then changed the code so as to implement my first jpanel as the east panel in a Border layout. This runs ok only the check box's do not move down to the next line.
First question
have I comply misunderstood the section of the book and is it not allowed to put a panel with one layout type in side a panel?
Or
have I made a coding mistake and if so where?
This is my code.
import javax.swing.*;
import java.awt.*;
//THIS IS THE CLASS FOR THE HOLE PROGRAM
public class flowTest extends JFrame implements KeyListener {
public flowTest() {
super("Jeremys Demo");                     // THIS IS THE TITLE OF THE WINDOW
setSize(200, 200);                     //THIS IS THE SIZE OF THE WINDOW
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);     // ACTION FOR THE EXIT x
setVisible(true);                         // MAKE THE WINDOW VISIBLE
JPanel master = new JPanel();
BorderLayout m1 = new BorderLayout();
master.setLayout(m1);
JPanel east = new JPanel();
FlowLayout flo4 = new FlowLayout();
east.setLayout(flo4);
//PANNEL EAST
JCheckBox oneStar = new JCheckBox("One Star", true);
JCheckBox twoStar = new JCheckBox("Two Star");
JCheckBox threeStar = new JCheckBox("Three Star");
JCheckBox fourStar = new JCheckBox("Four Star");
JCheckBox fiveStar = new JCheckBox("Five Star");
ButtonGroup rating = new ButtonGroup();
rating.add(oneStar);
rating.add(twoStar);
rating.add(threeStar);
rating.add(fourStar);
rating.add(fiveStar);
east.add(oneStar);
east.add(twoStar);
east.add(threeStar);
east.add(fourStar);
east.add(fiveStar);
master.add(east, BorderLayout.EAST);
// puts it all in to the main window
setContentPane(master);
// THIS IS THE START POINT
public static void main(String[] arguments) {
flowTest W1 = new flowTest();
}

Answer 1

Stern wrote:
FlowLayout is not designed for this, use GridLayout instead.Agree strongly. Also, you could simplify your code by using arrays. For example:
compare this:
        // PANNEL EAST
        String[] cbLabels =
            "One Star", "Two Star", "Three Star",
            "Four Star", "Five Star"
        ButtonGroup rating = new ButtonGroup();
        for (int i = 0; i < cbLabels.length; i++)
            JCheckBox cb = new JCheckBox(cbLabels);
rating.add(cb);
east.add(cb);
if (i == 0)
cb.setSelected(true);
with your code. Now see which is easier to add a "Six Star" rating?