package cn.stat.p3.conection.demo;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
public class conectionDemo {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Collection cl=new ArrayList();
show(cl);
}
public static void show(Collection col)
{
col.add("aaa");
col.add("bbb");
col.add("ccc");
System.out.println(col);
Iterator it=col.iterator();
while(it.hasNext())
{
System.out.println(it.next());
}
}
}
package cn.stat.p4.list.demo;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import java.util.LinkedList;
public class listDemo {
public static void main(String[] args) {
// TODO 自动生成的方法存根
LinkedList<String> nlist=new LinkedList<String>();
show(nlist);
}
private static void show(LinkedList nlist) {
// TODO 自动生成的方法存根
nlist.add("aaa");
nlist.add("bbb");
nlist.add("ccc");
System.out.println(nlist);
nlist.add(1,"ddd");
System.out.println(nlist);
ListIterator it=nlist.listIterator();
while(it.hasNext())
{
Object obj=it.next();
if(obj.equals("bbb"))
{
it.add("qqq");
}
}System.out.println(nlist);
System.out.println(it.previous());
System.out.println(it.previous());
System.out.println(it.previous());
/*
System.out.println(nlist);
System.out.println("remove="+nlist.remove(2));
nlist.set(2, "qqq");
System.out.println();
System.out.println(nlist.get(2));
*/
}
public listDemo() {
super();
// TODO 自动生成的构造函数存根
}
}
