how to output a list in java

1for(int i=0;i<list.size();i++){
2    System.out.println(list.get(i));
3} 

1System.out.println(Arrays.toString(list.toArray()));
2

1
2for(int i = 0; i < models.size(); i++) {
3    System.out.println(models.get(i).getName());
4

1for (Song song : list) {
2	System.out.println(song.getName());
3}