List of files changed between commits with JGit

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You can use the DiffFormatter to get a list of DiffEntrys. Each entry has a changeType that specifies whether a file was added, removed or changed. An Entrys’ getOldPath() and getNewPath() methods return the path name. The JavaDoc lists what each method retuns for a given change type.

ObjectReader reader = git.getRepository().newObjectReader();
CanonicalTreeParser oldTreeIter = new CanonicalTreeParser();
ObjectId oldTree = git.getRepository().resolve( "HEAD~1^{tree}" );
oldTreeIter.reset( reader, oldTree );
CanonicalTreeParser newTreeIter = new CanonicalTreeParser();
ObjectId newTree = git.getRepository().resolve( "HEAD^{tree}" );
newTreeIter.reset( reader, newTree );

DiffFormatter diffFormatter = new DiffFormatter( DisabledOutputStream.INSTANCE );
diffFormatter.setRepository( git.getRepository() );
List<DiffEntry> entries = diffFormatter.scan( oldTreeIter, newTreeIter );

for( DiffEntry entry : entries ) {
  System.out.println( entry.getChangeType() );
}

The above example lists the changed files between HEAD and its predecessor, but can be changed to compare arbitrary commits like abc^{tree}.

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