Windows → Preferences → Java → Editor → Content Assist
将 Auto activation delay(ms): 改成 20 即可!
将 Auto activation triggers for java: 的默认值“.”改为.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
转载于:https://www.cnblogs.com/shangdawei/archive/2013/04/02/2996624.html
相关资源：eclipse智能提示（打随便一个字母都有提示)
