https://sourceforge.net/projects/vijava/forums/forum/823527/topic/5189812

CurrentSnapshot.java

ManagedObjectReference currentSnapshot;

public void printCurrentSnapshotName() {
    VirtualMachineSnapshotInfo snapshotInfo = vm.getSnapshot();
    if (snapshotInfo != null) {
        currentSnapshot = snapshotInfo.currentSnapshot;
        walkSnapshotTree(snapshotInfo.rootSnapshotList);
    }
}

private void walkSnapshotTree(VirtualMachineSnapshotTree[] snapshotTree) {
    for (VirtualMachineSnapshotTree snapshot : snapshotTree) {
        if (snapshot.snapshot.equals(currentSnapshot)) {
            System.out.println("Name: " + snapshot.name);
        } else if (snapshot.childSnapshotList != null) {
            walkSnapshotTree(snapshot.childSnapshotList);
        }
    }
}