Solved

interface member variable

Posted on 2011-09-07
4
231 Views
Last Modified: 2012-05-12
i would like to know about interface member variables. I was reading as

Interfaces may have member variables, but these are implicitly public, static, and final- in other words, interfaces can declare only constants, not instance variables that are available to all implementations and may be used as key references for method arguments for example.



i am not clear on what it mean by ' as key references for method arguments'. Thanks in advance
0
Comment
Question by:gudii9
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
4 Comments
 
LVL 47

Accepted Solution

by:
for_yan earned 500 total points
ID: 36495604
Think about some say SwingConstants interface or something like that when they have constants like ScrollbarPoloicy.ALWAYS_PRESENT or something like that. The set methid actually need sinmpole integer, but for you easierbto remememver this integrer is given such mname and tyou use it is setrPoloicy method. You'll nmever need to change integer - so it isa final , it is all rthe way constant for all instances, and it is desugned to be used as parameter of tge methods.
0
 
LVL 7

Expert Comment

by:rumi78
ID: 36498385
gudii9 what a book you are reading ... :)

'as key references for method arguments' may be understand as 'may be used' :)
the example was about:
method(Interface.CONSTANT);
0
 
LVL 60

Expert Comment

by:Kevin Cross
ID: 36935269
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
0

Featured Post

[Live Webinar] The Cloud Skills Gap

As Cloud technologies come of age, business leaders grapple with the impact it has on their team's skills and the gap associated with the use of a cloud platform.

Join experts from 451 Research and Concerto Cloud Services on July 27th where we will examine fact and fiction.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Java had always been an easily readable and understandable language.  Some relatively recent changes in the language seem to be changing this pretty fast, and anyone that had not seen any Java code for the last 5 years will possibly have issues unde…
In this post we will learn how to make Android Gesture Tutorial and give different functionality whenever a user Touch or Scroll android screen.
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.
This tutorial explains how to use the VisualVM tool for the Java platform application. This video goes into detail on the Threads, Sampler, and Profiler tabs.

636 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question