import javax.swing.*;
import javax.swing.text.html.*;
import java.awt.*;

public class MultilineLabelButton{
	public static void main(String[] args){
		JFrame frame = new JFrame("Multiline Label for Button");
		String lbl = "<html>" + "This label" + "<br>" + "is in two lines" + "</html>";
		Panel panel = new Panel();
		JButton button = new JButton(lbl);
		panel.add(button);
//		frame.add(button);
		frame.add(panel, BorderLayout.NORTH);
		frame.setSize(300, 200);
		frame.setVisible(true);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}