add controls vertically instead of horizontally using flow layout

Question

I am adding checkboxes on JPanel in FlowLayout the checkboxes are being added horizontally.

I want to add checkboxes vertically on the Panel. What is the possible solution?

FlowLayout is doing what it suggests, flowing components left to right till it has no space and then goes on next line, with different layouts you can do what you need. — AbstractChaos, Nov 22 '12 at 10:30
I would suggest a [BoxLayout](http://docs.oracle.com/javase/tutorial/uiswing/layout/box.html) — AbstractChaos, Nov 22 '12 at 10:33
@user714965 as much as google helps with doing UI work an understanding of how it does it is still important — AbstractChaos, Nov 22 '12 at 10:36

score 58 · Accepted Answer · edited Feb 27 '19 at 13:20

I hope what you are trying to achieve is like this. For this please use Box layout.

package com.kcing.kailas.sample.client;

import javax.swing.BoxLayout;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.WindowConstants;

public class Testing extends JFrame {

    private JPanel jContentPane = null;

    public Testing() {
        super();
        initialize();
    }

    private void initialize() {
        this.setSize(300, 200);
        this.setContentPane(getJContentPane());
        this.setTitle("JFrame");
    }

    private JPanel getJContentPane() {
        if (jContentPane == null) {
            jContentPane = new JPanel();
            jContentPane.setLayout(null);

            JPanel panel = new JPanel();

            panel.setBounds(61, 11, 81, 140);
            panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
            jContentPane.add(panel);

            JCheckBox c1 = new JCheckBox("Check1");
            panel.add(c1);
            c1 = new JCheckBox("Check2");
            panel.add(c1);
            c1 = new JCheckBox("Check3");
            panel.add(c1);
            c1 = new JCheckBox("Check4");
            panel.add(c1);
        }
        return jContentPane;
    }

    public static void main(String[] args) throws Exception {
        Testing frame = new Testing();
        frame.setVisible(true);
        frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
    }
}

... and the basic approach (use BoxLayout) differs from the earlier answer by @AbstractChaos in that .. ? Except being worse: null layout in contentpane? manual sizing/positioning of panel? nononono, don't. And what is the updateComponentTreeUI supposed to achieve here? — kleopatra, Nov 22 '12 at 11:37
this answe is correct but too complex and outer of focus of problem — Domenico Monaco, Jul 18 '14 at 09:45
How can I align a single element to the right and have all else centered? — ArchLinuxTux, Mar 06 '18 at 10:44

score 49 · Answer 2 · edited Nov 20 '13 at 14:16

49

I used a BoxLayout and set its second parameter as BoxLayout.Y_AXIS and it worked for me:

panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));

edited Nov 20 '13 at 14:16

ArtOfWarfare

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answered Aug 06 '13 at 07:16

Nakul Sudhakar

1,574
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2

How can I align a single element to the right and have all else centered? – ArchLinuxTux Mar 06 '18 at 10:43

score 15 · Answer 3 · answered Nov 22 '12 at 10:37

As I stated in comment i would use a box layout for this.

JPanel panel = new JPanel();
panel.setLayout(new BoxLayout());

JButton button = new JButton("Button1");
button.setAlignmentX(Component.CENTER_ALIGNMENT);
panel.add(button);

button = new JButton("Button2");
button.setAlignmentX(Component.CENTER_ALIGNMENT);
panel.add(button);

button = new JButton("Button3");
button.setAlignmentX(Component.CENTER_ALIGNMENT);
panel.add(button);

add(panel);

this one is not compiling – Stepan Yakovenko Nov 06 '17 at 05:20 — Stepan Yakovenko, Nov 06 '17 at 05:20

score 7 · Answer 4 · edited Mar 24 '15 at 19:48

7

JPanel testPanel = new JPanel();
testPanel.setLayout(new BoxLayout(testPanel, BoxLayout.Y_AXIS));
/*add variables here and add them to testPanel
        e,g`enter code here`
        testPanel.add(nameLabel);
        testPanel.add(textName);
*/
testPanel.setVisible(true);

edited Mar 24 '15 at 19:48

Opal

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answered Mar 24 '15 at 19:28

Declan Cahill

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1

Welcome to Stack Overflow! Please consider adding a link to BoxLayout to your answer to improve it, and a short explanation. – juhist Mar 24 '15 at 19:48

add controls vertically instead of horizontally using flow layout

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