java thu - Page 194 - Developer IT

Desktop Screen Streaming in Java

- by Joannes

Can anyone tell me how to stream my desktop through sockets in Java? I tried using screen captures and sending them 1 at a time but it's no good. Too slow! I think to redirect the video stream would be better.

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Equivalent of IllegalArgumentException of Java in C++

- by vito

In Java if an input argument to a method is invalid, we can throw an IllegalArgumentException (which is of type RuntimeException). In C++, there is no notion of checked and unchecked exceptions. Is there a similar exception in standard C++ which can be used to indicate a runtime exception? Or is there a common style not in the standard but everyone follows in practice for a situation like this? Or, should I just create my own custom exception and throw it?

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Include Unit tests in the same package as the source code in Java

- by TheDelChop

Guys, I'm getting back into Java after a long stint in the Ruby world and I've got a question about JUnit tests and the source I'm testing. If I've got a package of graphics code for my company, lets call it com.example.graphics, should I include my tests in that package too or should they be included in a seperate package, like com.example.graphics.test? Thanks, Joe

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About using OpenCV library in Java.

- by Chetan

Hi i am using Ubuntu linux, I have installed OpenCV library. How to use OpenCV library in Java programming?

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Properly match a Java string literal

- by Fork

Hi, I am looking for a Regular expression to match string literals in Java source code. Is it possible?

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Good concurrency example of Java vs. Clojure

- by Michiel Borkent

Clojure is said to be a language that makes multi-thread programming easier. From the Clojure.org website: Clojure simplifies multi-threaded programming in several ways. Now I'm looking for a non-trivial problem solved in Java and in Clojure so I can compare/contrast their simplicity. Anyone?

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Simple/Direct way of contructing a HTML string in Java

- by das_weezul

In python I can construct a HTML string without worrying about escaping special characters like < or " by simply enclosing the string in triple quotes like: html_string = """ <html> <body> <p>My text with "quotes" and whatnot!<p> </body> </html> """ Is there a similar way to do this in Java?

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How to convert ascii to hexadecimal values in java

- by lakshmi

How to convert ascii to hexadecimal values in java . For Example ascii:31 32 2E 30 31 33 to hex:12.013. can any one please help me... thanks in advance.

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String array definition in JAVA

- by Mohamed KALLEL

Is it possible to define array in this way in JAVA, otherwise are there an alternative close this definition? private final int CONST_0= 0; private final int CONST_1= 1; private final int CONST_2= 2; private final int CONST_3= 3; private final String[] CONST_TXTRECORDS = new String[] {[CONST_0] = "test0", {[CONST_1] = "test1", {[CONST_2] = "test2", {[CONST_3] = "test3"};

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get active window of other programs using java

- by stdnoit

i am trying to make java application that can get the information from other active window program ...such as information bar or even screenshot of other active window is JNI the only option in this case? thanks

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Java Conceptual Graph Visualization library

- by nikky

Hi I need to visualize conceptual graph by using java and I'm wondering if there any library that i can use to make my work easier? Any advice? Thank you so much

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java AWT native OS library ?

- by JavaUser

Hi, As we know AWT classes uses native OS libraries for creating GUIs but Swing uses Java library itself for creating the GUI.Can anyone please give me an example of the Windows OS library corresponds to a AWT GUI ? Thx

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Where Java applets game portals?

- by StudioFortress

I have started making some small Java games that run in a browser and have found a couple of game portals where I can host then (GameJolt.com, JavaGameTomb.com and Games4j.com). Most of the other portals I find either only allow Flash or offer the games for download. Apart from those above, what other portals exist that allow hosting applets?

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Monitoring application to monitor a Java desktop application performance

- by TacB0sS

Hey, I have a Java desktop application I wrote, and I would like a recommendation about a monitoring application that can spot bottlenecks in the code and real time memory consumptions. As I was developing for J2Me, the WTK then, had a memory monitor, and I found it really useful, I would like to know which monitoring program you think is best to use. Thanks, Adam.

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Creating a Maze using Java

- by user356184

Im using Java to create a maze of specified "rows" and "columns" over each other to look like a grid. I plan to use a depth-first recursive method to "open the doors" between the rooms (the box created by the rows and columns). I need help writing a openDoor method that will break the link between rooms.

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Capturing keystrokes in a panel in java

- by rgksugan

I want to capture keystrokes when the focus in on a panel in java. What should i do?

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Java out.println() how is this possible?

- by user69514

I've seen some code such as: out.println("print something"); I tried import java.lang.System; but it's not working. How do you use out.println() ?

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Sample xml configuration for log4j, have a 'main' java application and want to write to file

- by Blankman

Are there any example log4j configuration files (XML). I have a java main application. I want log4j to output to console AND write to file. Any examples of this would be greatly appreciated. I'm using netbeans if that matters.

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What is the significance of the reverse domain name for java package structure

- by Vaishak Suresh

Why do we use reverse domain name like com.something. or org.something. structure for java packages? I understand this brings in some sort of uniqueness, but why do we need this uniqueness?

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Java: iterating through list of lists?

- by HH

The question but in C#. So does Java have C#'s command? I need it for Matches-SearchTerm-Files-relationship. foreach(var i in BunchOfItems.SelectMany(k => k.Items)) {}

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How to implement openId java web based application?

- by satya

In my web application i want to implement the OpenId just like stackoverflow.com have to login to its web-site. In details you find while login to stackoverflow.com So when if one choose google then it allow the uses to log in through google account. Please tell me how to implement it in java web application in details. Is there any single api for login through different website like(yahoo,google,facebook,etc) Thanks

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Wait For Return Key Press Using Java Scanner

- by Gordon

What would be the best way to wait for a return key press from the user using the Java Scanner Class? In a command line tool I would like the user to confirm before carrying out an action. Please correct me if there a more standard way of doing this in a command line tool.

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Java tutorials for beginning programmer

- by ChrisC

I have next to no programming experience, and absolutely none with Java, so I'm looking for some good online tutorials/primers. Please point me to good ones for beginners like me. Thanks.

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java hashmap flaws ?

- by Tiberiu Hajas

hi there, if (agents != null) for (Iterator iter = agents.keySet().iterator(); iter .hasNext();) { // some stuffs here } I have the following piece of java code, the agents is a hashmap, wondering if anyone can figure it out why on the line with "for" statement sometimes I got NPE ? is there any flaw with hashmaps ? thanks

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Free GUI-like web design tool for Java?

- by Peter C.

Our company needs to build web solution and we're somewhat short on time. We use Java and do not have a design yet. We're looking for some tools/plugins for: GUI-like web design (drag and drop components) WYSIWYG The tools must be *free We like GWT but any other UI framework is fine. Plugins for NetBeans or Eclipse would be great. Any ideas?

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