Java写的一个LinkedList

MyLinkList实现代码

package MyLinkedList;

import java.lang.reflect.ParameterizedType;


public class MyLink <T>
{
    private Entity<T> header;
    private int size;
    
    public MyLink()
    {
        this.header = new Entity(null,null,null);
        this.size = 0;
        this.header.next = (this.header.previous=this.header);
    }
    
    public void add(T entity)
    {
        //新节点的prev指向头结点 , 新节点的next指向头结点next
        Entity newNode = new Entity(header,entity,header.next);
        //头结点后面原来的节点的prev指向新节点
        this.header.next.previous = newNode;
        //头结点的next指向新节点
        this.header.next = newNode;    
        
        size++;
    }
    
    public void delete(T paramObject)
    {
        Entity local;
        for(local = this.header.next;local!=this.header;local = local.next)
        {
            if(paramObject.equals(local.element))
            {
                local.next.previous = local.previous;
                local.previous.next = local.next;
                local.previous = null;
                size--;
                break;
            }
        }
    }
    
    public int indexOf(T paramObject)
    {
        int i = 0;
        Entity local;
        for(local = this.header.next;local!=this.header;local = local.next)
        {
            if(paramObject.equals(local.element))
                return i;
            i++;
        }
        return -1;
    }
    
    public T getElement(int paramInt)
    {
        return getEntity(paramInt).element;
    }
    
     private Entity<T> getEntity(int paramInt)
     {
         Entity local = this.header;
            
         if(paramInt>=0&&paramInt<this.size)
         {
             for(int i=0;i<=paramInt;i++)
                 local = local.next;         
         } 
         return local;
     }
     
     public int getLength()
     {
         return this.size;
     }
    
    private class Entity<T>
    {
        T element;
        Entity<T> next;
        Entity<T> previous;
        
        public Entity(Entity<T> previous,T element,Entity<T> next)
        {
            this.element = element;
            this.next = next;
            this.previous = previous;
        }
    }

}

测试用例

package MyLinkedList;

import org.junit.Test;

public class Client 
{
    MyLink<Model> list = new MyLink();
    
    @Test
    public void test()
    {
        list.add(new Model("tom",18));
        list.add(new Model("jeck",22));
        list.add(new Model("asd",21));
        list.add(new Model("toem",19));
        
        Model m = new Model("zen",17);
        list.add(m);
        
        list.add(new Model("wen",23));
        list.add(new Model("baobo",18));
        list.add(new Model("dawei",20));
        
        list.delete(m);
        
        System.out.println(list.getLength());
        
        for(int i=0;i<list.getLength();i++)
            System.out.println(list.getElement(i).getName()+"   ");
        
    }
}

Model类

package MyLinkedList;

public class Model 
{
    private String name;
    private int age;
    
    public Model(String name,int age)
    {
        this.name = name;
        this.age = age;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
    
    

}