[3684] in java-interest
Instanciation by name
daemon@ATHENA.MIT.EDU (Michel MEYER)
Wed Nov 22 06:55:54 1995
Date: Sun, 19 Nov 1995 16:55:48 +0100
To: java-interest@java.sun.com
From: michel@mmania.com (Michel MEYER)
One can read in the JAVA Specification (4.6 Object Creation -- the new
Operator) that there is a form of the new operator which allows name
instanciation, by default calling the default constructor.
Here is what's written:
/-------- begin quote
A third form of allocator allows the class name to be provided as a String
expression. The String is
evaluated at runtime, and new returns an object of type Object, which must
be cast to the desired type.
b = new ( "Class"+"A" );
In this case, the constructor without arguments is called.
/-------- end quote
However, I tryed this and I got an error message at compile time:
test.java:7: 'new(...)' not supported.
add((A) new ("Class A"));
^
So, as I understand it this feature is not yet implemented. As we are now
already in beta, I am wondering if this will have any chance to be
implemented in future releases, or is it a dropped feature ?
Maybe I missed something ... in any case, I would appreciate any answer
Michel (michel@mmania.com)
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