java - How I can call generic method <Item> -

i have problem in code , need me create api of randomizedqueue array , when call method

public static  <item> void enqueue(item item) {     if(item == null)throw new nullpointerexception();     s[n++] =  item; } 

in client class return error , think problem @ array how create static <item> item[] (generic type).

you cannot declare static generic fields in class. not when class generic, see declaring static generic variables in generic class.

write generic class randomizedqueue, , instantiate (create objects):

public class randomizedqueue<item> {     private item[] items = new item[constant];     private int count = 0;      public void enqueue(item item)     {         if(item == null) throw new illegalargumentexception("item mustn't null");         if(count == constant) throw new illegalstateexception("queue full");         items[count++] = item;     }      public item dequeue()     {         if(count == 0) throw new illegalstateexception("queue empty");         int index = (int)(math.random() * count);         item item = items[index];         items[index] = items[--count];         return item;     }      public int getcount()     {         return count;     } }