note java7_2

note java7_2

public class CollectionTest {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubCollection list=new LinkedList();list.add(1);list.add(2);System.out.println(list.isEmpty());System.out.println(list.size());System.out.println(list.contains(2));list.remove(1);Object[]array=list.toArray();for(Object x:array){System.out.println(x);}}}

public class IteratorTest {public static void main(String[] args) {// TODO Auto-generated method stubCollection list=new LinkedList();list.add(1);list.add(2);list.add(3);list.add(4);System.out.println(list.size());Iterator iterator=list.iterator();while(iterator.hasNext()){Object object=iterator.next();System.out.println(object);if(object.equals(2)){iterator.remove();}}iterator=list.iterator();while(iterator.hasNext()){System.out.println(iterator.next());} }}