for(int i = 0; i < MaxnNum; i++)

for (Iterator itr = List.iterator(); itr.hasNext();) {
　　itr.next();
}

for(int i: integers)

String[] strings = {"A"， "B"， "C"， "D"};Collection list = java.util.Arrays.asList(strings);for (Object str : list) {    System.out.println(str);}