netx.jnlp.util
Class WeakList
public class WeakList
extends AbstractList
This list stores objects automatically using weak references.
Objects are added and removed from the list as normal, but may
turn to null at any point (ie, indexOf(x) followed by get(x)
may return null). The weak references are only removed when
the trimToSize method is called so that the indices remain
constant otherwise.
WeakList() - Create a weak random-access list.
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void | add(int index, Object element) - Inserts the object at the specified position in the list.
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Object | get(int index) - Returns the object at the specified index, or null if the
object has been collected.
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List | hardList() - Returns a list of hard references to the objects.
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Object | remove(int index) - Removes the object at the specified position and returns it
or returns null if it was already collected.
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Object | set(int index, Object element) - Sets the object at the specified position and returns the
previous object at that position or null if it was already
collected.
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int | size() - Returns the size of the list, including already collected
objects.
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void | trimToSize() - Compacts the list by removing references to collected
objects.
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WeakList
public WeakList()
Create a weak random-access list.
add
public void add(int index,
Object element)
Inserts the object at the specified position in the list.
Automatically creates a weak reference to the object.
get
public Object get(int index)
Returns the object at the specified index, or null if the
object has been collected.
hardList
public List hardList()
Returns a list of hard references to the objects. The
returned list does not include the collected elements, so its
indices do not necessarily correlate with those of this list.
remove
public Object remove(int index)
Removes the object at the specified position and returns it
or returns null if it was already collected.
set
public Object set(int index,
Object element)
Sets the object at the specified position and returns the
previous object at that position or null if it was already
collected.
size
public int size()
Returns the size of the list, including already collected
objects.
trimToSize
public void trimToSize()
Compacts the list by removing references to collected
objects.