自动提醒:打开Eclipse,最上面菜单栏选择Windows>preferences>Java>Editor>Content Assist,找到Auto activation 下的子选项auto activation triggers for java后的文本框,输入abcdefghijklmnopqrstuvwxyz.即可,最后一个符号是小写句号,其实顺序可以不一样。自动保存:Windows->Preferences -> General -> Workspace -> Save automatically before build勾选Save automatically before build即可,另外Preferences -> Run/Debug -> Launching -> Save dirty editors before launching 设置为 Always