--- old/src/demo/share/jfc/SwingSet2/OptionPaneDemo.java	2020-01-22 16:03:56.000000000 -0800
+++ new/src/demo/share/jfc/SwingSet2/OptionPaneDemo.java	2020-01-22 16:03:56.000000000 -0800
@@ -163,7 +163,7 @@
                 message[0] = getString("OptionPaneDemo.componentmessage");
                 message[1] = new JTextField(getString("OptionPaneDemo.componenttextfield"));
 
-                JComboBox cb = new JComboBox();
+                JComboBox<String> cb = new JComboBox<>();
                 cb.addItem(getString("OptionPaneDemo.component_cb1"));
                 cb.addItem(getString("OptionPaneDemo.component_cb2"));
                 cb.addItem(getString("OptionPaneDemo.component_cb3"));