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Editorial Team
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Asked: 2026-06-17T18:13:52+00:00

I trying to some formatting for my label in java swing. If user enter

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I trying to some formatting for my label in java swing. If user enter : 

    This
    is
    testing.

And I store this into database and retrieve out. How can I make this prevent from auto joining into one sentence. For example, I want this to be shown on my label which is scrollable : 

    This
    is
    testing.

instead of Thisistesting. I do not know what is this called. Is this the line wrap method? I added this : jLabel_reply.setLineWrap(true); into my code but no luck. The sentence is still auto joined together. Any guides? Thanks in advance.

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1 Answer

  1. Editorial Team

    JLabel does not display itself on multiple lines by default.

    You have two options here:

    1) Use a non-editable, non-opaque JTextArea

    2) Use HTML inside your JLabel and replace all your line separators with <br>

    Basic example illustrating my saying:

    import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.SwingUtilities;

public class TestMultipleLineLabel {

    private static final String TEXT = "This is\na text\non multiple lines";

    protected void initUI() {
        JFrame frame = new JFrame(TestMultipleLineLabel.class.getSimpleName());
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JPanel panel = new JPanel(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.gridwidth = GridBagConstraints.REMAINDER;

        JLabel label = new JLabel();
        label.setText(getHTMLText(TEXT));
        label.setFont(label.getFont().deriveFont(Font.PLAIN));
        panel.add(label, gbc);
        JTextArea textArea = new JTextArea();
        textArea.setEditable(false);
        textArea.setLineWrap(false);
        textArea.setOpaque(false);
        textArea.setWrapStyleWord(false);
        textArea.setText(TEXT);
        panel.add(textArea, gbc);
        frame.add(panel);
        frame.pack();
        frame.setVisible(true);
    }

    private String getHTMLText(String text) {
        return "<html>" + text.replace("\n", "<br>") + "</html>";
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                new TestMultipleLineLabel().initUI();
            }
        });
    }

}
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