我建议下载的javadoc 并在Eclipse中添加。 （右键单击项目＆GT;性状＆gt; Java构建路径＆GT;库和GT;扩大图书馆＆GT;设置的Javadoc位置）

I'd suggest downloading the javadocs and adding them in eclipse. (right click project > properties > java build path > libraries > expand the library > set Javadoc location)