the import sun.tools.tree cannot resolved
the import sun.tools.tree cannot resolved这个是什么问题?
我在百度上看,是这样说的:
It's in the lib directory of the JDK, not the JRE. You'll need the JDK if you're going to develop Java programs!
需要设定 jdk 为 lib 目录,而不是 jre为 lib目录
具体要怎么操作?