Performing dynamic text changes in JLabel

Question

I have a Java Swing JLabels array. A user of my program can add a new JLabel to the JFrame, and I want to resize the text in JLabel depending on the number of JLabels in the frame. If there are too many JLabels, the text will still match and will not overlap other JLabels.

Answer 1

Doesn't look pretty, but if that's what you need, here is a quick snippet of code to compile and run. Feel free to fetch the code needed for your project. Have fun, - M.S ..

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

public class LabelSize extends JPanel {     

    private Font        font;
    private JPanel      panel;
    private JLabel      label = new JLabel ("Font Size Adapter Label", JLabel.CENTER);
    private JTextField  tf = new JTextField ("Type in text for new label here and hit [Enter]");

    public LabelSize() {         
        super (new BorderLayout());
        panel = labelPanel();
        add (panel, "North");
        add (tf, "South");
        tf.addActionListener (new ActionListener () {
            public void actionPerformed (ActionEvent e) {
                label.setText (tf.getText());
                label.setFont (font);
                int labelW = (int) Math.ceil (label.getPreferredSize().getWidth());
                int maxWidth = (int) Math.floor (panel.getSize().getWidth());
                if (labelW <= maxWidth)
                    return;
                for (int k = 1 ; labelW > maxWidth ; k++) {
                    Font labelFont = font.deriveFont (font.getSize() - k*1.0f);
                    label.setFont (labelFont);
                    labelW = (int) Math.ceil (label.getPreferredSize().getWidth());
        }}});
    } 

    private JPanel labelPanel() {
        JPanel lp = new JPanel(new BorderLayout());
        lp.setPreferredSize (new Dimension (270,30));
        lp.add (label, "North");
        font = label.getFont();
        return lp;
    }

    public static void main (String[] args) {
        JFrame lsFrame = new JFrame ("Lfit");
        lsFrame.add (new LabelSize());
        lsFrame.pack();
        lsFrame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
        lsFrame.setVisible(true);
}}