升级到Juno后发现工具栏有些乱 而且无法拖动，试了下http://blog.csdn.net/cxx504659987/article/details/38532599的方法 发现配置文件里没有文中提到的<tags>Opaque</tags>
于是去谷歌了一下 发现了这个http://stackoverflow.com/a/13074584
Try Windows->Preferences
Then type Theme in the Search box (or go General->Appeearance->Theme) and choose Window 7. restart and you‘ll be able to move the icons/groups in the toolbar (but not get rid of any)
After you‘re done you‘ll be asked to restart/ I went to Classsic theme and THEN restarted.
Hope it helps
1.Windows->Preferences->General->Appeearance->Theme 选择Windows7 Apply后 重启Eclipse
2.Apply后 重启Eclipse 你会发现工具栏上的图标和分组可以移动了
3.之后你可以选择重新选择把Theme切换回Classic 重启Eclipse 重启后同样可以移动
