问题
Importing com.sun.javadoc eclipse report me this error "The import com.sun.javadoc cannot be roselved" it seems the package is not installed. Looking at the web sitehttp://download.oracle.com/javase/1.5.0/docs/guide/javadoc/doclet/spec/index.html?com/sun/javadoc/package-summary.html only the API are displayed but I cannot download anything. How can I do
回答1:
What I usually do is, in Eclipse preferences, I define an Installed JRE called "JDK X.Y.Z" and include tools.jar as part of it libraries. Then I change the project preferences to use that JRE "JDK X.Y.Z".
The other approach is to simply add tools.jar to your project's library or point to it in the project path.
回答2:
You need to add Tools.jar from the JDK install into your project's build path.
Right click your project in the Package Explorer, and go to properties. On the left, click "Java Build Path". Go to the "Libraries" tab and click "Add External JARs". Navigate to your JDK install and go to the LIB folder. Select tools.jar, and hit okay.
回答3:
http://java.sun.com/j2se/javadoc/faq/index.html#com.sun.javadoc
The JDK's tools.jar is not typically included in Eclipse project class paths. You should avoid using com.sun.* code if you can.
回答4:
Do you actually have a JDK installed, or maybe just an JRE?
Also see Depending on com.sun.javadoc from tools.jar (Sun JDK) in Eclipse.
来源：https://stackoverflow.com/questions/4797079/how-to-import-com-sun-javadoc-in-eclipse