import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
public class Test {
public static void main(String[] args) {
List list = new ArrayList();
list.add(3);
list.add(2);
list.add(10);
list.add(4);
list.add(70);
/* System.out.println("---方法一 -----");
for(Iterator iterator = list.iterator();iterator.hasNext();){
int i = (Integer) iterator.next();
System.out.println(i);
}
/* System.out.println("---方法二 -----");
Iterator iterator = list.iterator();
while(iterator.hasNext()){
int i = (Integer) iterator.next();
System.out.println(i);
}
System.out.println("---方法三 -----");
for (Object object : list) {
System.out.println(object);
}*/
System.out.println("---方法四 -----");
for (int i = 0 ;i<list.size();i++) {
int j= (Integer) list.get(i);
System.out.println(j);
}
}
}