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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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  • Java DriverManager Always Assigns My Driver

    - by JGB146
    I am writing a driver to act as a wrapper around two separate MySQL connections (to distributed databases). Basically, the goal is to enable interaction with my driver for all applications instead of requiring the application to sort out which database holds the desired data. Most of the code for this is in place, but I'm having a problem in that when I attempt to create connections via the MySQL Driver, the DriverManager is returning an instance of my driver instead of the MySQL Driver. I'd appreciate any tips on what could be causing this and what could be done to fix it! Below is a few relevant snippets of code. I can provide more, but there's a lot, so I'd need to know what else you want to see. First, from MyDriver.java: public MyDriver() throws SQLException { DriverManager.registerDriver(this); } public Connection connect(String url, Properties info) throws SQLException { try { return new MyConnection(info); } catch (Exception e) { return null; } } public boolean acceptsURL(String url) throws SQLException { if (url.contains("jdbc:jgb://")) { return true; } return false; } It is my understanding that this acceptsURL function will dictate whether or not the DriverManager deems my driver a suitable fit for a given URL. Hence it should only be passing connections from my driver if the URL contains "jdbc:jgb://" right? Here's code from MyConnection.java: Connection c1 = null; Connection c2 = null; /** *Constructors */ public DDBSConnection (Properties info) throws SQLException, Exception { info.list(System.out); //included for testing Class.forName("com.mysql.jdbc.Driver").newInstance(); String url1 = "jdbc:mysql://server1.com/jgb"; String url2 = "jdbc:mysql://server2.com/jgb"; this.c1 = DriverManager.getConnection( url1, info.getProperty("username"), info.getProperty("password")); this.c2 = DriverManager.getConnection( url2, info.getProperty("username"), info.getProperty("password")); } And this tells me two things. First, the info.list() call confirms that the correct user and password are being sent. Second, because we enter an infinite loop, we see that the DriverManager is providing new instances of my connection as matches for the mysql URLs instead of the desired mysql driver/connection. FWIW, I have separately tested implementations that go straight to the mysql driver using this exact syntax (al beit only one at a time), and was able to successfully interact with each database individually from a test application outside of my driver.

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  • Wrapper class for HttpGet / Post in Java?

    - by Tim Green
    Hi, Sorry, I'm quite new to Java. I've stumbled across HttpGet and HttpPost which seem to be perfect for my needs, but a little long winded. I have written a rather bad wrapper class, but does anyone know of where to get a better one? Ideally, I'd be able to do String response = fetchContent("http://url/", postdata); where postdata is optional. 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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  • Applying a patch from java.net

    - by user354414
    I have a problem with Jaxb enumerations that is related to this bug https://jaxb.dev.java.net/issues/show_bug.cgi?id=708 A patch has been supplied to the issue that can resolve the problem. How can I apply this patch to resolve my problem

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  • How to time Java program execution speed

    - by George Mic
    Sorry if this sounds like a dumb question but how do you time the execution of a java program? I'm not sure what class I should use to do this. I'm kinda looking for something like: //Some timer starts here for (int i = 0; i < length; i++) { // Do something } //End timer here System.out.println("Total execution time: " + totalExecutionTime); Thanks

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  • Java Double entry table

    - by Tom
    Hi, Does anyone know a double entry table implementation in java I can download ? I need to do something like this 1 2 3 _______ a| x y z b| h l m c| o a k table.get(a,1) would return x Of course, it should use any Object as key, value, etc Thanks in advance

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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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  • editing a string using BufferedReader in Java

    - by pbs
    Exception handling aside, I'm using the following to input a line of text in Java: BufferedReader strin = new BufferedReader(new InputStreamReader(System.in)); String txt = null; txt = strin.readLine(); However, I want to be able to edit an existing string, so that if txt were initialized to "hello" instead of null, then the readLine() would have the "hello" text in the buffer for me to edit. I can't see how to do this. Any help would be appreciated.

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  • Java - get index of key in HashMap?

    - by llm
    In java if I am looping over the keySet() of a HashMap, how do I (inside the loop), get the numerical index of that key? Basically, as I loop through the map, I want to be able to get 0,1,2...I figure this would be cleaner than declaring an int and incrementing with each iteration. Thanks.

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  • parsing JSON in java ?

    - by bukuai
    How to parsing JSON in java? { "code": 100, "message": "SUCCESS", "result": { "list": [ { "cardNumber": "ALUFZZ5SZ1Q5", "expireTime": 1270742400, "surplusThreshold": 4, "uid": 771292, "useTime": 1270214375, "wareId": 1145 }, { "cardNumber": "ALUFZZ5SZ1QD", "expireTime": 1270828800, "surplusThreshold": 7, "uid": 784289, "useTime": 1270302200, "wareId": 1145 }, { "cardNumber": "ALUFZZ5SZ1RC", "expireTime": 1270828800, "surplusThreshold": 10, "uid": 773664, "useTime": 1270300871, "wareId": 1145 }, { "cardNumber": "ALUFZZ5SZ1UM", "expireTime": 1270828800, "surplusThreshold": 10, "uid": 779560, "useTime": 1270282841, "wareId": 1145 }, { "cardNumber": "ALUFZZ5SZ1VT", "expireTime": 1270656000, "surplusThreshold": 2, "uid": 754099, "useTime": 1270106775, "wareId": 1145 } ], "pageCount": 61, "pageIndex": 2, "pageSize": 5, "recordCount": 308 } }

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  • Acquiring drive names (as opposed to drive letters) in Java

    - by Mattijs
    Hi, On my Windows machine, my main hard drive has the letter C: and the name "Local disk". To list the drive letters in Java on Windows, the File object has the static listRoots() method. But I can't find a way to acquire the drive names (as opposed to the drive letters) on Windows. Has anyone tried this before? Thanks, Mattijs

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  • Java: Calculate distance between a large number of locations and performance

    - by Ally
    I'm creating an application that will tell a user how far away a large number of points are from their current position. Each point has a longitude and latitude. I've read over this article http://www.movable-type.co.uk/scripts/latlong.html and seen this post http://stackoverflow.com/questions/837872/calculate-distance-in-meters-when-you-know-longitude-and-latitude-in-java There are a number of calculations (50-200) that need carried about. If speed is more important than the accuracy of these calculations, which one is best?

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  • How to find buggy class in java?

    - by I.Randanad
    I have a big program on java, that uses multithreading. In some case, the program starts loading 100% of three cores of my eigth cores system. In normal use, the program use all cores of 1-2 percent loading. How can i find a class, that overloading cores?

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  • couldn't start a java application as a windows service

    - by rgksugan
    I have written a java application which is a RMI server. I need to start rmiregistry to run this application and i also want my apllication to start automatically when the system starts. I have converted my application into a windows servise. When i try to start my service it shows this error Error 1067: The process terminated unexpectedly Is it because my program throws an exception when my application is started before the rmiregistry is started.

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  • Is Java worth learning in my late fourties?

    - by bobi
    Hi guys. First I want to say is that I am 37 years old and not from programer background (actualy from biology). And my question is should I start learning java? I have coded in php and javascript for a year and a half. Every answer would be appreciated Thanks in advance Bobi.

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