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java Programming Glossary: somethingWhy is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array for this branch even under Ox . Intel Compiler 11 does something miraculous. It interchanges the two loops thereby hoisting the..
What is a Null Pointer Exception? http://stackoverflow.com/questions/218384/what-is-a-null-pointer-exception to by x. But when you try to declare a reference type something different happens. Take the following code Integer num num new.. a method as follows public void doSomething Integer num do something to num in which case you are not creating the object num rather..
getResourceAsStream() vs FileInputStream http://stackoverflow.com/questions/2308188/getresourceasstream-vs-fileinputstream is started. This may for example be C Tomcat bin or something entirely different but thus not C Tomcat webapps contextname..
What is a raw type and why shouldn't we use it? http://stackoverflow.com/questions/2770321/what-is-a-raw-type-and-why-shouldnt-we-use-it Now we run into trouble at run time because names contains something that isn't an instanceof String . Presumably if you want names..
How to use java.net.URLConnection to fire and handle HTTP requests? http://stackoverflow.com/questions/2793150/how-to-use-java-net-urlconnection-to-fire-and-handle-http-requests .getErrorStream If the HTTP response code is 1 then something went wrong with connection and response handling. The HttpURLConnection..
How to call SOAP web service in Android http://stackoverflow.com/questions/297586/how-to-call-soap-web-service-in-android sort of SOAP library. You can either write your own or use something like kSOAP 2 . As you note others have been able to compile..
Download a file with Android, and showing the progress in a ProgressDialog http://stackoverflow.com/questions/3028306/download-a-file-with-android-and-showing-the-progress-in-a-progressdialog and post results to the UI with easily. If you are doing something like that in your app it could be really useful. 3. Use DownloadManager.. Once you are sure DownloadManager is available you can do something like this String url url you want to download DownloadManager.Request..
How to avoid Java Code in JSP-Files? http://stackoverflow.com/questions/3177733/how-to-avoid-java-code-in-jsp-files Java Code in JSP Files I'm new to Java EE and I know that something like the following three lines x 1 request.getParameter name..
A better Java JSON library? [closed] http://stackoverflow.com/questions/338586/a-better-java-json-library require that you place Java annotations in your classes something that you can not do if you do not have access to the source..
Why not use Double or Float to represent currency? http://stackoverflow.com/questions/3730019/why-not-use-double-or-float-to-represent-currency You'll get the nearest representable value which is something like 0.0999999999999999996 and software will round it to 0.1..
http://stackoverflow.com/questions/4112686/how-to-use-servlets-and-ajax and I have the following question Whenever I print something inside the servlet and call it by the webbrowser it returns..
How do I write a correct micro-benchmark in Java? http://stackoverflow.com/questions/504103/how-do-i-write-a-correct-micro-benchmark-in-java the code yourself before forming theories about what makes something faster or slower. Rule 7 Reduce noise in your measurements...
“implements Runnable” vs. “extends Thread” http://stackoverflow.com/questions/541487/implements-runnable-vs-extends-thread specialising the thread's behaviour. You're just giving it something to run. That means composition is the philosophically purer..
How to best position Swing GUIs http://stackoverflow.com/questions/7143287/how-to-best-position-swing-guis thread I stated that I liked to center my GUIs by doing something like this JFrame frame new JFrame Foo frame.setDefaultCloseOperation..
Get current stack trace in Java http://stackoverflow.com/questions/1069066/get-current-stack-trace-in-java current stack trace in Java Something like Environment.StackTrace in .Net. BTW Thread.dumpStack is..
How to check if a String is a numeric type in Java http://stackoverflow.com/questions/1102891/how-to-check-if-a-string-is-a-numeric-type-in-java defined function i.e. Roll your own isNumeric function . Something like public static boolean isNumeric String str try double d..
How do I split a string with any whitespace chars as delimiters? http://stackoverflow.com/questions/225337/how-do-i-split-a-string-with-any-whitespace-chars-as-delimiters string whitespace splitting share improve this question Something in the lines of myString.split s this groups all whitespaces..
How to retrieve and display images from a database in a JSP page? http://stackoverflow.com/questions/2340406/how-to-retrieve-and-display-images-from-a-database-in-a-jsp-page catch SQLException e throw new ServletException Something failed at SQL DB level. e finally if resultSet null try resultSet.close..
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure http://stackoverflow.com/questions/2983248/com-mysql-jdbc-exceptions-jdbc4-communicationsexception-communications-link-fai TCP IP connections. DB server has run out of connections. Something in between Java and DB is blocking connections e.g. a firewall..
In Java, how do I convert a byte array to a string of hex digits while keeping leading zeros? http://stackoverflow.com/questions/332079/in-java-how-do-i-convert-a-byte-array-to-a-string-of-hex-digits-while-keeping-l check how many digits are output by Integer.toHexString . Something like this String hex Integer.toHexString 0xFF messageDigest..
Java Webservice Client (Best way) http://stackoverflow.com/questions/3588616/java-webservice-client-best-way the best java webservice framework Spring ws or Axis2 or Something else for śContract First approach to WS share improve this..
What is a stack trace, and how can I use it to debug my application errors? http://stackoverflow.com/questions/3988788/what-is-a-stack-trace-and-how-can-i-use-it-to-debug-my-application-errors of chained exceptions javax.servlet.ServletException Something bad happened at com.example.myproject.OpenSessionInViewFilter.doFilter..
How can I increment a date by one day in Java? http://stackoverflow.com/questions/428918/how-can-i-increment-a-date-by-one-day-in-java can I do this java date share improve this question Something like this should do the trick String dt 2008 01 01 Start date..
Creating an instance using the class name and calling constructor http://stackoverflow.com/questions/6094575/creating-an-instance-using-the-class-name-and-calling-constructor name dynamic and pass parameters to it's constructor. Something like Object object createInstance mypackage.MyClass MyAttributeValue..
How to share data with two(2) SwingWorker class in Java http://stackoverflow.com/questions/6171414/how-to-share-data-with-two2-swingworker-class-in-java else System.out.println Thread Status with Name str Something wrong happends public static void main String args SwingUtilities.invokeLater..
http://stackoverflow.com/questions/6916693/jmenuitem-imageicon-too-big ret.getGraphics .drawImage image 0 0 32 32 null Something like that should give you the image you can then create your..
JTable how prepareEditor works http://stackoverflow.com/questions/7045851/jtable-how-prepareeditor-works should have more logic in the isCellEditable ... method. Something like public boolean isCellEditable int row int column if column..
How to get X and Y index of element inside GridLayout? http://stackoverflow.com/questions/7702697/how-to-get-x-and-y-index-of-element-inside-gridlayout Is there an easier way to get the X Y indexes of a button Something like JButton button JButton ev.getSource int x this.getContentPane..
Update JLabel every X seconds from ArrayList<List> - Java http://stackoverflow.com/questions/7943584/update-jlabel-every-x-seconds-from-arraylistlist-java disappear. Any suggestions on how to update the JLabel Something with repaint I am drawing a blank. Thanks UPDATE With the help..
How to implement a Map with multiple keys? http://stackoverflow.com/questions/822322/how-to-implement-a-map-with-multiple-keys let's say two keys Keys are guaranteed to be unique. Something like MyMap K1 K2 V ... With methods like getByKey1 K1 key .....
What are the reasons why Map.get(Object key) is not (fully) generic http://stackoverflow.com/questions/857420/what-are-the-reasons-why-map-getobject-key-is-not-fully-generic of the method is possible to have a Map ArrayList Something and for me to call get with a LinkedList as argument and it..
How can I put axis on a .png file in java? http://stackoverflow.com/questions/9843451/how-can-i-put-axis-on-a-png-file-in-java have a good idea about how to do this sort of thing Update Something like this but the data would be color coded with rgb values..
Something seems wrong with the layout, JButton showing unexpected behaviour at resize of the window http://stackoverflow.com/questions/9849950/something-seems-wrong-with-the-layout-jbutton-showing-unexpected-behaviour-at-r seems wrong with the layout JButton showing unexpected behaviour..
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