How to print status of a committed file in JGit - jgit

Question

I need to print the status of committed files in JGit,whether it is added ,removed,changed etc.For that i have initially cloned the remote repository and I got the details of commit id,author name,author mail id,date and time.But when I try to print the status using IndexDiff/Status classes, I get null values.
I need to know is it possible to get status of committed files in a remote repository with or without cloning.
public static void main(String[] args)throws IOException, InvalidRemoteException, TransportException, GitAPIException {
String remote = "http://192.168.215.29:9090/technology-evaluation/patchgitpluginsample.git";
File localPath = File.createTempFile("TestGitRepository", "");
localPath.delete();
Git git = Git.cloneRepository().setURI(remote)
.setCredentialsProvider(new UsernamePasswordCredentialsProvider("sarathb", "findme"))
.setDirectory(localPath)
.call();
Repository repository = FileRepositoryBuilder.create(new File(localPath.getAbsolutePath(), ".git"));
System.out.println(repository);
List<Ref> branches = git.branchList().call();
for (Ref ref : branches)
{
System.out.println(ref.getName());
}
Iterable<RevCommit> commits = git.log().all().call();
for (RevCommit revCommit : commits) {
System.out.println("");
RevTree tree=revCommit.getTree();
/*System.out.println(revCommit.getName());*/
System.out.println("COMMIT : "+revCommit);
System.out.println("COMMIT MESSAGE : "+revCommit.getFullMessage());
System.out.println("AUTHOR NAME : "+revCommit.getAuthorIdent().getName());
System.out.println("AUTHOR E-MAIL ID : "+revCommit.getAuthorIdent().getEmailAddress());
System.out.println("DATE/TIME : "+revCommit.getAuthorIdent().getWhen());
Status status=git.status().call();
System.out.println("added:"+status.getAdded());
System.out.println("removed:"+status.getRemoved());
TreeWalk treewalk = new TreeWalk(repository);
treewalk.addTree(tree);
treewalk.setRecursive(true);
while (treewalk.next())
{
if(treewalk.getNameString().contains(".java"))
System.out.println("FILE COMMITTED : "+treewalk.getNameString());
}
}}}