import com.btr.proxy.search.ProxySearch;
Eclipse says that this import "com.btr cannot be resolved"
The complete code is here.
How do I tell eclipse where to find it?
I think com.btr.proxy.search.ProxySearch
class not present in your class path.
If you are not using maven then you have to download proxy-vole_20131209_bin.zip
file and configure it in your class path it has ProxySearch
class. Download from here
com.btr belongs to a separate library. You can add it to your workspace by right clicking your current project, going to Build Path > Configure Build Path. Navigate to the Java Build Path among the icons on the left and selecting Libraries among the tabs given. Select add external jars and select the location of your jar file which should hold the library you're looking for.