Collection How to use

 PackageCn.stat.p3.conection.demo;Importjava.util.ArrayList;Importjava.util.Collection;ImportJava.util.Iterator; Public classConectiondemo {/**     * @paramargs*/     Public Static voidMain (string[] args) {//TODO auto-generated Method StubCollection cl=NewArrayList ();    Show (CL); }     Public Static voidShow (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 ()); }                    }}

 PackageCn.stat.p4.list.demo;Importjava.util.ArrayList;ImportJava.util.Iterator;Importjava.util.List;ImportJava.util.ListIterator;Importjava.util.LinkedList; Public classListdemo { Public Static voidMain (string[] args) {//TODO Auto-generated method stubsLinkedlist<string> nlist=NewLinkedlist<string>(); Show (nlist); }        Private Static voidShow (LinkedList nlist) {//TODO Auto-generated method stubsNlist.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));*/    }     PublicListdemo () {Super(); //TODO Auto-generated constructor stub    }}

Collection How to use