import javax.swing.*; public class ParticipantArea extends JList { private JLabel label; private DefaultListModel<String> listOfUsers = new DefaultListModel<>(); private JList<String> list = new JList<>(listOfUsers); public ParticipantArea(){ label = new JLabel("Online User"); this.setVisible(true); } public JLabel getLabel() { return label; } public JList<String> getList() { return list; } public void addUser(String name){ listOfUsers.addElement(name); } public DefaultListModel<String> getListOfUsers() { return listOfUsers; } }