Main.java Source code

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Here is the source code for Main.java
Source

import java.awt.Component;

import javax.swing.DefaultListCellRenderer;
import javax.swing.JList;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;

public class Main {
    public static void main(String[] args) {
        String[] names = { "John Smith", "this is a test", "this is a test. this is a test. " };
        MyCellRenderer cellRenderer = new MyCellRenderer(80);
        JList<String> list = new JList<>(names);
        list.setCellRenderer(cellRenderer);
        JScrollPane sPane = new JScrollPane(list);
        JPanel panel = new JPanel();
        panel.add(sPane);
        JOptionPane.showMessageDialog(null, panel);

    }
}

class MyCellRenderer extends DefaultListCellRenderer {
    public static final String HTML_1 = "<html><body style='width: ";
    public static final String HTML_2 = "px'>";
    public static final String HTML_3 = "</html>";
    private int width;

    public MyCellRenderer(int width) {
        this.width = width;
    }

    @Override
    public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected,
            boolean cellHasFocus) {
        String text = HTML_1 + String.valueOf(width) + HTML_2 + value.toString() + HTML_3;
        return super.getListCellRendererComponent(list, text, index, isSelected, cellHasFocus);
    }

}