Windews —> preferences —> Java —> Editor —> Content Assist —> 看右侧偏下Auto activation triggers for Java:.qwertyui……(在点后面把字母全部输一遍)
给eclipse设置代码提示

Windews —> preferences —> Java —> Editor —> Content Assist —> 看右侧偏下Auto activation triggers for Java:.qwertyui……(在点后面把字母全部输一遍)