Java List Collection practice (for yourself)

Import java.util.ArrayList;
Import Java.util.Iterator;

Import java.util.LinkedList;
		public class Linkedlisttest {public static void main (string[] args) {//Linkedlistmethod ();
		Arraylistmethod ();
	Arraylistmethod_2 (); * * * To the custom object, get the collection of the same element * Important is the Equals method * the contains and remove (obj) methods of the list collection are all called equals/public static VO
		ID arraylistmethod_2 () {ArrayList Al = new ArrayList ();
		Al.add (New Person1 ("Xiaoming", 22));
		Al.add (New Person1 ("Xiaoli", 10));
		Al.add (New Person1 ("Xiaoli", 10));
		Al.add (New Person1 ("Xiaoliu", 12)); for (Iterator it = Al.iterator (); It.hasnext ();)
			{Person1 P1 = (Person1) it.next ();
		System.out.println (P1.name + "..." + p1.age);
		} System.out.println ("------------");
		Al = Linkedlisttest.singleelement (AL); for (Iterator it = Al.iterator (); It.hasnext ();)
			{Person1 P1 = (Person1) it.next ();
		System.out.println (P1.name + "..." + p1.age); }/* ArrayList practice to get rid of containers with the same elements/public static void Arraylistmethod () {ARraylist al = new ArrayList ();
		Al.add ("Java01");
		Al.add ("Java02");
		Al.add ("Java01");
		Al.add ("Java02");
		Al.add ("Java01");
		Al.add ("java03");
		System.out.println (AL);
		Al = Singleelement (AL);
	System.out.println (AL);

		* * * Returns a method to return the set after the same element * * public static ArrayList singleelement (ArrayList al) {ArrayList Newal = new ArrayList (); for (Iterator it = Al.iterator (); It.hasnext ();)
			{Object o = It.next ();
			if (!newal.contains (o)) {newal.add (o);
	} return Newal;
		/* * LinkedList impersonation queue/public static void Linkedlistmethod () {Duilie dl = new Duilie ();
		Dl.add ("Java01");
		Dl.add ("Java02");
		Dl.add ("java03");
		Dl.add ("Java04");
		while (!dl.isnull ()) {System.out.println (Dl.get ());

	}}/* The emulated Queue class */class Duilie {private LinkedList list;
	Duilie () {list = new LinkedList ();
	public void Add (Object o) {list.addfirst (o);
	Public Object get () {return List.removefirst (); public Boolean isNull () {return List.isEmpty ();
	} class Person1 {String name;

	int age;
		Person1 (String name, int gae) {this.name = name;
	This.age = age; @Override public boolean equals (Object obj) {if (!
		obj instanceof Person1)) {return false;
		} Person1 p1 = (Person1) obj;
	Return Name.equals (p1.name) && age==p1.age; }
	
	
}