import javax.swing.*;

public class JanelaBox extends JFrame {

    public JanelaBox() {
	setTitle("BoxLayout");
	setSize(240,120);

	Box h = Box.createHorizontalBox();
	Box v = Box.createVerticalBox();
	String[] lista = {"Um", "Dois", "Tres", "Quatro", 
			  "Cinco", "Seis", "Sete"};
	JList jl = new JList(lista);
	jl.setFixedCellWidth(70);
	jl.setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
	JScrollPane lEsq = new JScrollPane(jl);
	lEsq.setMinimumSize(new java.awt.Dimension(100,100));
	JButton add = new JButton(">>");
	JButton clear = new JButton("Clear");
	JButton close = new JButton("Close");
	JTextArea tDir = new JTextArea();

	v.add(add);
	v.add(clear);
	v.add(close);
	h.add(lEsq);
	h.add(v);
	h.add(tDir);
	getContentPane().add(h);
    }

    public static void main(String[] args) {
	JanelaBox jb = new JanelaBox();
	jb.setVisible(true);
	jb.validate();
    }
}