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  • how to use a MySql database within Eclipse

    - by aadersh patel
    I am very new to programming, so please bear with me, and apologies in advance if at first I dont make sense...! I am doing an undergrad programming project, and need to make some databases within a Java program. I am using eclipse (galilo) to write my program. I have downloaded a connector/J, but havent the foggiest how i should use it! Anyone out there able to give me a step by step approach?! Many thanks!

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  • whiteboard application

    - by alice
    Hi..i wanted to develop a whiteboard application..i know the basics of java..but have no idea where to start from..so..i'd really appreciate if you could guide me..as in..where do i start from??

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  • whiteboard application

    - by alice
    Hi..i wanted to develop a whiteboard application..i know the basics of java..but have no idea where to start from..so..i'd really appreciate if you could guide me..as in..where do i start from??..plz...i reallly need ths..

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  • Handle Proxy servers?

    - by govardhan
    We are doing one project. We have to develope website, that displays all proxy servers list and when user click on particular server it will be activated to him. For this I am confusing on use Java or PHP. which is simple to handle proxys. Please help me.

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  • Huffman coding two characters as one

    - by Adomas
    Hi, I need huffman code(best in python or in java), which could encode text not by one character (a = 10, b = 11), but by two (ab = 11, ag = 10). Is it possible and if yes, where could i find it, maybe it's somewhere in the internet and i just can'd find it?

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  • mapping Field with variable type using Hibernate Annotaion

    - by Zahra
    Hi. how can I have a field with variable type in my class? I use hibernate annotation for mapping to DB. I tried to use java.io.Serializable as field's type, but it mapped to database as a 01 amount which is true if I get it's object and cast it to it's true type. but I need to run a query on this objects that needs true amount of field.(right now I can't compare an integer field with a number) Does anyone have any idea how can I do this? Thanks in advance.

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  • Word documents generation in web app using Eclipse BIRT Report Engine

    - by Orr151
    Hi, Is it possible to generate word documents (*.doc) in java web application using Eclipse BIRT (Report Engine)? I want .rptdesign to be an input file in generating process. I could not find any example or tutorial. What would you recommend as an alternative solution. As far as I know Jasper Reports allow only RTF format generation. Thank you for your answer/explaination

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  • Converting back from toString to Object

    - by MontyBongo
    Is there any way to covert from toString back to the object in Java? For example: Map<String, String> myMap = new HashMap<String, String>(); myMap.put("value1", "test1"); myMap.put("value2", "test2"); String str = myMap.toString(); Is there any way to convert this String back to the Map?

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  • Convert .jar to an OSX executable?

    - by Danny King
    Hello, I made a Java application which I would like to distribute on Windows, OSX and Linux without distributing a jar file. I used the great Windows exe wrapper http://launch4j.sourceforge.net/ to create an .exe file complete with my icon that won't scare Windows users. Are there similar wrappers that I can use for OSX/Unix? An important consideration is that I would like to have my own icon on the executable (especially for mac users). Thanks!

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  • What is Dispatcher Servlet in Spring?

    - by theband
    http://maestric.com/wiki/lib/exe/fetch.php?w=&h=&cache=cache&media=java:spring:spring_mvc.png In the above image, HTTP request sends something to Dispatcher Servlet. My Question is what does Dispatcher Servlet do. Is it something like getting the information thrown from the web page and throwing it to the controller.

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  • finally and return

    - by abson
    In the below example, class ex8 { public void show() { try { int a=10/0; return;} catch(ArithmeticException e) { System.out.println(e); return ;} finally { System.out.println("Finally"); } } public static void main(String[] args) { new ex8().show(); } } the output is: java.lang.ArithmeticException: / by zero Finally How is it that Finally gets printed in spite of return statement in catch?

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  • k-combinations of a set of integers in ascending size order

    - by Adamski
    Programming challenge: Given a set of integers [1, 2, 3, 4, 5] I would like to generate all possible k-combinations in ascending size order in Java; e.g. [1], [2], [3], [4], [5], [1, 2], [1, 3] ... [1, 2, 3, 4, 5] It is fairly easy to produce a recursive solution that generates all combinations and then sort them afterwards but I imagine there's a more efficient way that removes the need for the additional sort.

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  • clarification on the concept of "web service"

    - by udit
    Im a little confused on the varying definitions and implementations of web services available as implementations. Need some clarification please. Ones I have used till now: If a vendor gives me a specific format of XML that I can send populated with data to request and I make a simple HTTP POST over the internet passing in the XML String as the payload, is this a web service call ? If so, is there a specific name to it, this kind of web service ? Because obviously, it does not use anything like Axis, WSDL or SOAP to establish this connection. A variant of this is If the vendor gives me an XSD, I use JAXB to make a java class out of it and pass in the serialized version of the object, which eventually works out to be the same as option 1. RESTful web service: Vendor gives me a URL like http://restfulservice/products and I can make HTTP Requests to the URL and depending on what HTTP verb I use, the appropropriate action is called and the response sent over the wire. Ones I have only read about\ have a vague idea about SOAP. How does this work?.. Ive read the W3Schools tutorial and I undertsand that there is a very specific form of XML that is standardized according to W3C standards that we use to pass the same kind of messages as we did in option 1. But how does this work in real life? Vendor sends me what? Do I generate classes? Do I serialize some objects and http post them over to an address? Or do the generated objects themselves have connection methods that will do them for me? What about WSDL? When does a vendor send me WSDL and what do I do with it ? I guess I can generate classes from it. If yes, then what do I do with the generated classes ? When do I need that axis jar to generate classes from something that the vendor sends ? As you can see, I have some clear and other mostly vague ideas about the different kinds of web services available. would help if someone ould clarify and\or point to more real-world resources. I've looked a little bit into Java Web Services on the internet and the numerous four letter acronyms that get thrown at me make me dizzy. Thanks

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  • error in creating my own Robot class in android..

    - by manju
    Hi All, I have decided to create my own Java's Robot class in android to take screen capture..i have written the source code of the robot class by my own but the problem is here, the following line in the code is throwing compilation error..saying "The method createRobot(Robot, GraphicsDevice) in the type ComponentFactory is not applicable for the arguments (Robot, GraphicsDevice)" peer = ((ComponentFactory)toolkit).createRobot(this, screen); Can anyone suggest me what would be the solution.... thanks..

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  • Conditional operator in if-statement?

    - by Pindatjuh
    I've written the following if-statement in Java: if(methodName.equals("set" + this.name) || isBoolean() ? methodName.equals("is" + this.name) : methodName.equals("get" + this.name)) { ... } Is this a good practice to write such expressions in if, to separate state from condition? And can this expression be simplified?

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  • Upside down question mark issue

    - by Madhumita
    We have a very strange problem in out application, all of a sudden we started noticing upside down question marks being saved along with other text typed in to the fields on the screen. These upside down question marks were not originally entered by the users and it is unclear where they come from. We are using Oracle 10g with java. And this is happening, even when no data is copied from Microsoft Word

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  • How to explictely obtain post data in Spring MVC?

    - by predhme
    Is there a way to obtain the post data itself? I know spring handles binding post data to java objects. But if I had two fields that I want to process manually, how do I obtain that data? Assuming I had two fields in my form <input type="text" name="value1" id="value1"/> <input type="text" name="value2" id="value2"/> How would I go about retrieving those values in my controller?

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