Scala IDE 自带的scala 包中找不到 swing的库是为什么？

在类中引用不了。 版本 2.12.2

Additional parts of the standard library are shipped as separate libraries. These include:

• [[scala.reflect scala.reflect]] - Scala's reflection API (scala-reflect.jar)
• [[scala.xml scala.xml]] - XML parsing, manipulation, and serialization (scala-xml.jar)
• [[scala.swing scala.swing]] - A convenient wrapper around Java's GUI framework called Swing (scala-swing.jar)
• [[scala.util.parsing scala.util.parsing]] - Parser combinators (scala-parser-combinators.jar)

以上是从github上scala项目中找到的，目前，大概是从scala2.11后，swing,xml等几个库就从标准库中分离了，需要使用的话可以到github上找