i want to convert there python code to java how i can do it ?can any one help me?

__slots__='_element','_prev','_next';

def __init__(self,element,prev,next);

self._element=element;

self._prev=prev;

self._next=next;

def __init__(self);

self._heart=self._Node(None,None,None)

self._club=self.Node(None,None,None)

self._spade=self._Node(None,None,None)

self._diamond=self._Node(None,None,None)

self.trailer=self._Node(None,None,None)

self._heart._next=self._Node

self._club._prev=_self._heart

self._club._next=self.spade

self._spade._prev=self._club

self._spade._next=self._diamond

self._diamond._prev=self._spade

self._diamond._next=self._trailer

self._trailer._prev=self._diamond

self._size=0

self._heart_size=0;

self._club_size=0

self._spade_size=0

self._diamon_size=0

def__len__(self);

return self._size

dep all_of_suit(self,s);

if(s=='heart') and (self._heart_size>0);

cursor =self._heart._next

while cursor ._elemnt is not None;

yield Cursor

CROSSHAIR_CURSOR element

if(s=='club')and (self._club_size>0);

cursor=self._club._next

while cursor._element is not None;

yield cursor._element

cursor=cursor._next

if (s=='spade')and (self ._spade_size >0);

cursor=self._spade._next

while cursor ._elemnt is not None;

yield cursor ._element

cursor = cursor ._next

if (s=='diamond')and (self._diamond _size>0);

while cursor ._element is not None ;

yield Cursor .CROSSHAIR_CURSOR element

cursor = cursor ._next

}