Collection的使用
List list = new ArrayList();
String str = "hello";
list.add(str);
Integer integer =new Integer(1);
list.add(integer);
//取出list中的值
String str2 = (String)list.get(0);
System.out.println(str2);
System.out.println(list.size());
//iterator迭代器
List intList = new ArrayList();
for(int i=0;i<10;i++)
{
intList.add("i"+i);
}
Iterator it = intList.iterator();
while(it.hasNext()){
String inte = (String)it.next();
System.out.println(inte);
}
System.out.println("=================================for===========================================");
for(int j=0;j
{
System.out.println(intList.get(j));
}