(笔记)J2EE中怎么运用Autoboxing/Unboxing-New Features of J2EE

(笔记)J2EE中如何运用Autoboxing/Unboxing--New Features of J2EE
public static void boxing(){
（1）Autoboxing 装箱
int i=9;
Integer  o_i=new Integer (i);
（2）Unboxing 拆箱
int j=o_i.intValue();
（3）利用list数组
List <Integer>list=new ArrayList<Integer>();
list.add(i);
list.add(j);
（4）在J2EE中直接可以调用o_i 而无需Unboxing 拆箱
list.add(o_i);
Iterator<Integer> it =list.iterator();
while(it.hasNext()){
System.out.println(it.next());
}
}

public static void main(String[] args) {
boxing();
}