= JList = To programmatically populate the list models of a JList called ''lstNames'': import javax.swing.DefaultListModel; import javax.swing.JList; //... private void btnTestActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your handling code here: populateList(); } private void populateList() { // TODO add your handling code here: DefaultListModel listModel = new DefaultListModel(); listModel.addElement("Jane Doe"); listModel.addElement("John Smith"); listModel.addElement("Kathy Green"); lstNames.setModel(listModel); }