Represents attribute name/value pairs from a Manifest as a Map.
The names of an attribute are represented by the
Attributes.Name class and should confirm to the restrictions
described in that class. Note that the Map interface that Attributes
implements allows you to put names and values into the attribute that don't
follow these restriction (and are not really Atrribute.Names, but if you do
that it might cause undefined behaviour later).
If you use the constants defined in the inner class Name then you can be
sure that you always access the right attribute names. This makes
manipulating the Attributes more or less type safe.
Most of the methods are wrappers to implement the Map interface. The really
useful and often used methods are getValue(Name) and
getValue(String). If you actually want to set attributes you
may want to use the putValue(String, String) method
(sorry there is no public type safe putValue(Name, String)
method).
The map that holds all the attribute name/value pairs. In this
implementation it is actually a Hashtable, but that can be different in
other implementations.
Adds or replaces a attribute name/value pair.
XXX - What if the name is a string? What if the name is neither a Name
nor a String? What if the value is not a string?
Parameters:
name - the name of the attribute
value - the (new) value of the attribute
Returns:
the old value of the attribute or null when there was no old
attribute with this name
Stores an attribute name (represented by a String) and value in this
Attributes map.
When the (case insensitive string) name already exists the value is
replaced and the old value is returned.
Parameters:
name - a (case insensitive) String representation of the attribite
name to add/replace
Attributes.java -- Represents attribute name/value pairs from a Manifest
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