title: set tooltip text at a particular location
body: <p>I have my output window as shown <a href="http://codes-at-igit.weebly.com/uploads/1/2/2/7/12272842/output.jpg" rel="noreferrer">here</a><br/>
  My complete code is:
  <a href="http://codes-at-igit.weebly.com/uploads/1/2/2/7/12272842/travellingsalesmanproblem.java" rel="noreferrer">http://codes-at-igit.weebly.com/uploads/1/2/2/7/12272842/travellingsalesmanproblem.java</a><br/>
  The circles are different G.P.S locations. I want to show the location i.e. , the longitude and latitude when mouse hovers on a node. I tried set tool tip text but it doesn't give privilege to specify the locations at which the text should occur. I have coded it in swing Java . I am working in Netbeans 7.1.2. So how can I do this? 
  <strong>How do I set tool tip text at a particular position?</strong></p>