J2ME multiple form/screen pattern

I can't seem to find any examples on the web on J2ME apps with multiple "forms" or screens. What is the best pattern to handle multiple screens in a MIDlet and keep the memory consumption low?

Here's a sample display structure (any can be a form or plain canvas with custom items),

Main Menu - Sync - Settings - Item - Another one - ... - ... - List - Item 开发者_Go百科 - Edit - Some other display

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Take a look at Lightweight UI Toolkit. It has different UI elements and UI patterns including the one you have listed. See if this helps you out.