Eclipse cannot import javax.realtime
问题 I am very new to java and only start to use Eclipse to run some real-time java program. I could not find javax.realtime to import, I get the error: The import javax.realtime cannot be resolved Any idea how to resolve this? Do I need to download any extra package or change some project setup? 回答1: This package is not a part of built in packages. You will need additional Jar file for this package. Check this link out. 回答2: Yes, you need a real-time Java library. There are some intended for