Not sure about the first one. But the second pic (and 3rd?), you definitely have some baby java's growing there! First time I saw them in my tank, I just about had a heart attack figuring it was some sort of killer algae that I was never goiing to be able to get rid of, ROFL!!!
I like to just leave the young java ferns. Eventually they will float away from the parent plant to settle somewhere else. Either leave them to settle somewhere naturally or move them to wherever you want.