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import java.util.ArrayList;
import java.util.LinkedList;
import java.util.Vector;
import java.util.concurrent.atomic.AtomicInteger;
/**
* List
* 允许存在重复的有序集合
* @author wanghl
*
*/
public class ListTest {
public static void main(String args[]){
System.out.println("-------------ArrayList");
/**
* ArrayList
* ArrayList支持可随需要而进行动态增长的动态数组。其内部存储数据结构数组。
* ArrayList可以快速索引元素，查找较快。插入、删除较慢。
*/
ArrayList<Persion> mList = new ArrayList<Persion>();
Persion pa1 = new Persion("孔乙己",40);
Persion pa2 = new Persion("小D",42);
mList.add(pa1);
mList.add(pa2);
mList.add(pa1);
mList.add(pa1);
mList.add(pa1);
mList.add(pa1);
System.out.println("Persion count is:"+mList.size());
for(Persion p:mList){
System.out.println("Persion is:"+p);
}
System.out.println("-------------LinkedList");
/**
* LinkedList
* 通过连接指针来关联前后两个元素，使用双向链表。
* 插入和删除较快，适合实现栈和队列
*/
LinkedList<Persion> linkPersion = new LinkedList<Persion>();
Persion pb1 = new Persion("二胡",40);
Persion pb2 = new Persion("小四",42);
linkPersion.add(pb1);
linkPersion.add(pb2);
for(Persion p:linkPersion){
System.out.println("Persion is:"+p);
}
System.out.println("-------------Vector");
/**
* Vector
* 矢量
* 线程安全的
*/
Vector<Persion> vectory = new Vector<Persion>();
Persion pc1 = new Persion("赵四爷",40);
Persion pc2 = new Persion("小二",23);
vectory.add(pc1);
vectory.add(pc2);
for(Persion p:vectory){
System.out.println("Persion is:"+p);
}
}
}
class Persion{
public String mName;
public int mAge;
public static AtomicInteger sIndex = new AtomicInteger();
public int mIndex;
public Persion(String name,int age){
mName = name;
mAge = age;
mIndex = sIndex.addAndGet(1);
}
@Override
public String toString() {
return "Persion name is:"+mName+",年龄："+mAge+",这是第："+mIndex+",个对象。"+super.toString();
}
@Override
public boolean equals(Object obj) {
if(obj instanceof Persion){
Persion other = (Persion) obj;
return mName.equals(other.mName)&&mAge == other.mAge;
}
return super.equals(obj);
}
@Override
public int hashCode() {
return super.hashCode();
}
}