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Class simula.simset.Head 

java.lang.Object
   |
   +----simula.simset.Linkage
           |
           +----simula.simset.Head
public class Head
extends Linkage
This class implements a double-linked list.

Constructor Index

o Head()
Initialize an empty list.

Method Index

o cardinal()
Returns the number of elements of the list.
o clear()
Clears the list.
o empty()
Returns True if the list is empty, False otherwise
o first()
Returns the first element of the list.
o first(Link)
Sets the first element of the list.
o last()
Returns the last element of the list.
o last(Link)
Sets the last element of the list.

Constructors

o Head 
 public Head()
Initialize an empty list.

Methods

o cardinal 
 public int cardinal()
Returns the number of elements of the list.

Returns:
the number of elements of the list.
o clear 
 public void clear()
Clears the list.

o empty 
 public boolean empty()
Returns True if the list is empty, False otherwise

Returns:
True if the list is empty.
o first 
 public Link first()
Returns the first element of the list.

Returns:
the first element of the list.
o first 
 protected void first(Link _first)
Sets the first element of the list.

Parameters:
_first - the new element to be first.
o last 
 public Link last()
Returns the last element of the list.

Returns:
the last element of the list.
o last 
 protected void last(Link _last)
Sets the last element of the list.

Parameters:
_last - the new element to be last. 
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