java interfaces - Page 610

Looking for some kind of code by Contracts that I can use with Eclipse

- by devoured elysium

I've tried before some Eclipse plugin (I don't remember its name) but it was lacking a lot of features (generics, for example). Is there anything easy to set up that would run on the last version of Java? Thanks

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Drawing directly on screen

- by mpetkevicius

Is it possible in Java to draw shapes and stuff directly on the screen so my desktop remains visible and I can click whatever is underneath my shape? I'm using Windows XP. Thanks.

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Location based Timezone Retrieval

- by samsina

Given: LDAP stores location of users. How do I drive their timezones using their location? Any pointers are accepted, Java language preferred. Thanks in advance.

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Looking for work with startups in exchange for Equity [closed]

- by SteveG

Hi guys, I'm looking for a startup to get involved with for an equity stake. I'm a software enginner/architect with 25 years experience. I've got extensive experience with Java, C# and LAMP and have worked with serveral startups over the last couple of years. If you're interested but would like to know more about me I can send you my resume. Steve

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run multiple webservices at a time

- by Prajakta

Hello, I have written a webservice which is taking URL as an input and producing a JSON respone. My problem is that now I have list of 1000 URLs and want to execute maximum threads of Webapplications to get output. Like I want to execute 100 instances of webservice at a time to get response.Please can anybody give some guidance how can I do it using java. Thank you in advance

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Singleton Pattern Implementation Issues?

- by locky28

Hi I am revising for an exam and need to know some implementation issues with the singleton pattern. they do not need to be too complex just basic things that would affect a developers decision to include them, Thanks P.S. Could any code examples be given in Java thanks.

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Can two different UDP socket in a system bind same port?

- by swift

I have an application which uses UDP connection, now when i try to run the app more than once its throwing me an exception java.net.BindException: Address already in use: Cannot bind but in my another app, which uses tcp connection, i can open two instance of the same app and its working fine. why this error only with UDP connection?

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Changing layouts in SWING

- by dan

I have written a program with flow layout, in Java, using Swing Framework. How do I change it to use group layout?

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How to Block images (img tags) from an iFrame?

- by ramayac

Hello, Im searching for ideas to solve the following problem: I'm loading an URL (any for that matter) into an iFrame, and then block (server side) all image tags, o object tags before sending the page to the client. -- What I was thinking to do is: fetching the URL, and then manipulating the fetched content using a Java library (any recomendation on that matter?). And after that, send the modify content to que client. Would that be the best approach to solve this problem? suggestions are wellcome :)

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What is the performance cost of calling Thread.isInterupted()?

- by Michael Barker

From the java sources, it look like to drops into native code. Is the cost roughly equivalent to a volatile read or does it need to acquire a lock of some type?

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Advice on reading indexes

- by London

Hello, I'm trying to figure out the right way to read lucene index only once whilst running the application multiple times, how can I do that in java? Because indexed data will not change so reading them each time would not be necessary. Can someone explain me the logic of it reading them only once? thank you

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Why is the return type not considered when differentiating methods?

- by Silent Warrior

The compiler does not consider return type when differentiating methods, so you cannot declare two methods with the same signature even if they have a different return type. Java Tutorial Why is this?

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Remove dash from a phone number

- by zoom_pat277

What regular expression using java could be used to filter out dashes '-' and open close round brackets from a string representing phone numbers... so that (234) 887-9999 should give 2348879999 and similarly 234-887-9999 should give 2348879999. Thanks,

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Smooth redeployment of WAR in production?

- by stephanos

I was wondering if there is a 'smooth way' of redeploying a Java WAR to a production server (no cluster, no OSGi)? All I can come up with is stop server, update file, restart server. And 10 minutes beforehand I need to display a maintenance warning on the site. What's your approach?

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Can someone explain what does <? super T> mean and when should it be used and how this construction

- by Roman

I'm using generics rather long time but I've never used construction like List<? super T>. What does it mean? How to use it? How does it look after erasure? I also wonder: is it something standard in generic programming (template programming?) or it's just a java 'invention'? Does c#, for example, allow similar constructions?

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what is the code for the following?

- by kkol

a difficult one.. using classes of primitive types in java, like Integer, Float, Long, etc, write a code fragment using a method to double the value of a variable passed as an argument

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Static member class - declare class private and class member package-private?

- by Helper Method

Consider you have the following class public class OuterClass { ... private static class InnerClass { int foo; int bar; } } I think I've read somewhere (but not the official Java Tutorial) that if I would declare the static member classes attributes private, the compiler had to generate some sort of accessor methods so that the outer class can actually access the static member class's (which is effectively a package-private top level class) attributes. Any ideas on that?

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Benchmarks for Single and MultiThreaded programs

- by user280848

Hi I am trying to compare the performance of Single and Multithreaded Java programs. Are there any single thread benchmarks which are available which I could then use and convert to their multithreaded version and compare the performance. Could anybody guide me as to what kind of programs(not very small) are suitable for this empirical comparison. Thanks in advance

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Iterator has .next() - is there a way to get the current element instead of the next one?

- by ufk

Hiya. I have an Iterator that I use on a HashMap, and i save and load the iterator. is there a way to get the previous key in the HashMap with Iterator? (java.util.Iterator) Update I save it as an attribute in a Red5 connection and then load it back to continue working where i stopped. Another update I'm iteratoring through the keyset of the HashMap

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Iterator has .next(), is there a way to get the current element instead of the next one?

- by ufk

Hiya. I have an Iterator that I use on a hashmap, and i save and load the iterator. is there a way to get the previous key in the hashmap with Iterator? (Java.Util.Iterator) update I save it as an attribute in a Red5 connection and then load it back to continue working where i stopped. another update I'm iteratoring through the keyset of the hashmap

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autoreferencing this class to use in another for c++

- by atomsfat

in java we can do this: public class A{ public static void main(String...str){ B b = new B(); b.doSomething(this); //How I do this in c++ ? the this self reference } } public class B{ public void doSomething(A a){ //Importat stuff happen here } } How can I do the same but in c++, I mean the self reference of A to use the method in B ?

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Restrict access of web application other than localhost

- by user206646

Hi, I hv 3 java web-apps running in jetty and i want one of them to be accessed only through localhost. I dont want to write filter. Can it be done by modifying some jetty configuration?