The source code looks like:

import java.applet.*;
import java.awt.*;

public class CheckBoxDemo extends Applet {

	public void init() {
		resize(100, 150);
		setLayout(new FlowLayout(FlowLayout.LEFT));
		CheckboxGroup name = new CheckboxGroup();

		add(new Checkbox("Matt", name, true));
		add(new Checkbox("Bob", name, false));
		add(new Checkbox("Deena", name, false));
		add(new Checkbox("Cheryl", name, false));
		add(new Checkbox("Other", name, false));
		
	}

}