每次都找半天，还不如自己记下来。

1.设置新项目的默认编码

Window->Preferences->General->Workspace->Text file encoding

2.删除插件

http://wiki.eclipse.org/FAQ_How_do_I_remove_a_plug-in%3F

Help > About Eclipse SDK > Installation Details, and then select the software you no longer want and clickUninstall. (On Macintosh it is Eclipse > About Eclipse > Installation Details.)

在旧版的eclipse貌似是不能删除插件的，只能禁用。

Help > Software Updates > Manage Configuration..., select the feature of interest, and disable it with the task shown in the right window. 

3.