Enable Auto Completion in Eclipse Editor

     By default, when you are coding in the Eclipse editor, only “.” will trigger the auto completion drop down list, otherwise you have to press Crtl + Space to trigger it.
     If we want to have the auto completion following by typing, like Visual Studio style, have to go “Window” -> “Preferences”, then choose “Java” -> “Editor” -> “Content Assist”, put “.abcdefghijklmnopqrstuvwxyz” in “Auto activation triggers for Java” filed.