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=== 3. Add Elements to Main (First) Screen ===
3.1. Open <code>MyScreen.java</code> class.<br/>3.2. Create class <code>Student</code> with the following fields: <pre> private String firstName; private String lastName; private String email; </pre>3.3. Add an array in <code>MyScreen</code> class to work with data.<br/>3.4. The following elements are added to the <code>MyScreen()</code> constructor. Add a text field: <br/> <pre> add(new AutoTextEditField("Student Name: ", "")); </pre>3.5. Add a search button: <pre> add(new ButtonField("Search")); </pre>3.6. Add the array of students to the list field: <pre> ObjectListField olf = new ObjectListField(); for (int i=0; i< ls.length; i++) { olf.insert(i, ls[i].getFirstName() + " " + ls[i].getLastName()); } add(olf); </pre>3.7. Add view, add, edit and delete student options to the menu and set commands to execute: <pre> MenuItem view = new MenuItem(new StringProvider("View Student"), 100, 1); view.setCommand(new Command(new ViewCommandHandler())); addMenuItem(view); MenuItem adds = new MenuItem(new StringProvider("Add Student"), 200, 2); adds.setCommand(new Command(new AddCommandHandler())); addMenuItem(adds); MenuItem edit = new MenuItem(new StringProvider("Edit Student"), 300, 3); edit.setCommand(new Command(new EditCommandHandler())); addMenuItem(edit); MenuItem delete = new MenuItem(new StringProvider("Edit Student"), 400, 4); delete.setCommand(new Command(new DeleteCommandHandler())); addMenuItem(delete); </pre>3.8. Create inner classes to execute all commands: <pre> class ViewCommandHandler extends CommandHandler { public void execute(ReadOnlyCommandMetadata metadata, Object context){ Dialog.alert("View was selected"); } } class AddCommandHandler extends CommandHandler { public void execute(ReadOnlyCommandMetadata metadata, Object context){ Dialog.alert("Add was selected"); } } class EditCommandHandler extends CommandHandler { public void execute(ReadOnlyCommandMetadata metadata, Object context){ Dialog.alert("Edit was selected"); } } class DeleteCommandHandler extends CommandHandler { public void execute(ReadOnlyCommandMetadata metadata, Object context){ Dialog.alert("Delete was selected"); } } </pre>3.9.
