[5130] in java-interest
Re: interfaces as return types????????
daemon@ATHENA.MIT.EDU (Walter Szewelanczyk)
Mon Jan 29 21:43:18 1996
From: "Walter Szewelanczyk" <Walter@stumpy.adco.com>
To: java-interest@java.sun.com
Date: Mon, 29 Jan 1996 20:37:40 +0000
Hi all,
It appears that you can treat an Interface similar to how you would
an abstract base class. Although you can't Instantiate an interface
you can declare a variable of type <Interface> and assign it any
object that impements its Interface just as you can assign a derived
subclass to its abstract ancestor.
for instance: Enumeration is an interface and StringTokenizer
implements the Enumeration Interface :
{
Enumeration E = new StringTokenizer("Hi There");
System.out.println((String)E.nextElement());
}
would print out "Hi"
Walt
********************************************************************************************
Walter Szewelanczyk Technical Director
Walter@adco.com NET VENTURE, Inc.
"One must stay in a very RIGID state of FLEXABILITY"
********************************************************************************************
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