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".
If you are going to be preparing a trip to the gem of South Africa understood as Sun City, you just need to make the effort to select the finest places to see as well as where you will be remaining. Fortunately, there are all sorts of resorts and hotels that you can choose from as you try to find quality accommodation near Sun City so that you can be sure that you have just the very best. Known to many as the Las Vegas of the nation of South Africa, you are never ever going to have a dull moment when it pertains to all of the various activities and entertainment that this destination has to provide.