具体的这样就行,菜单window->Preferences->Java->Editor->Content Assist->Enable auto activation 选项要打上勾
windows–>preference–>workbench–>keys 下设置Content Assist 的快捷键
window->Preferences->Java->Editor->Content Assist->Advanced 上面列表框的Select the proposal kinds contained in the ‘default’ content assist list: 中把 Other Java Proposals 选项打上勾。我还在后盾人线下面授培训学习呢,大牛讲师在身边随时解答呢,有不会的可以问我哦ʕ๑•㉨•๑ʔ❀