The content assist in Eclipse can be a bit overwhelming at times. With Eclipse 3.2 there is a new feature called Content Assist Cycling. If “Ctrl + Space” is presses successively Eclipse displays different types of proposals. This can be customized at Window>Preferences>Java>Editor>Content Assist>Advanced.
Select the proposal types as shown in the first screenshot. Now in Java editor type invoke content assist by pressing “Ctrl + Space” once. All the proposals are shown. If you press “Ctrl + Space” again only the Template Proposals are shown. See screenshot below. If you press “Ctrl + Space” once again you will see the Other Java Proposals.