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java Programming Glossary: listsHow can I lock a file using java (if possible) http://stackoverflow.com/questions/128038/how-can-i-lock-a-file-using-java-if-possible sort of flag or argument To clarify I have a java app that lists a folder and opens each file in the listing for processing it... at the same time so the scenario goes like this. ReadApp lists the folder and finds files A B C. It opens file A and starts.. A B C. It opens file A and starts the reading. WriteApp lists the folder and finds files A B C It opens file A sees that is..
Java - escape string to prevent SQL injection http://stackoverflow.com/questions/1812891/java-escape-string-to-prevent-sql-injection use a setInt method. The PreparedStatement documentation lists all the different methods available for setting and getting..
Any simple way to explain why I cannot do List<Animal> animals = new ArrayList<Dog>()? [duplicate] http://stackoverflow.com/questions/2346763/any-simple-way-to-explain-why-i-cannot-do-listanimal-animals-new-arraylistd a list of Dogs is a list of Animals . That's because Scala lists are by default immutable and so adding a Cat to a list of Dogs..
When to use LinkedList<> over ArrayList<>? http://stackoverflow.com/questions/322715/when-to-use-linkedlist-over-arraylist and accessed in O 1 . Also if you have large lists keep in mind that memory usage is also different. Each element..
Multiple wildcards on a generic methods makes Java compiler (and me!) very confused http://stackoverflow.com/questions/3546745/multiple-wildcards-on-a-generic-methods-makes-java-compiler-and-me-very-confu true. That is a List List is NOT a list whose elements are lists of some one unknown type. ... that would be a List extends List.. a List extends List Instead it's a list whose elements are lists of ANY type. Snippets Here's a snippet to illustrate the above..
Reversing a Linked List in Java, recursively http://stackoverflow.com/questions/354875/reversing-a-linked-list-in-java-recursively reverseRest Reverse secondElem then we join the two lists secondElem.Next list return reverseRest share improve this..
http://stackoverflow.com/questions/41233/java-and-sqlite java sqlite share improve this question The wiki lists some more wrappers Java wrapper around a SWIG interface http..
Properly removing an Integer from a List<Integer> http://stackoverflow.com/questions/4534146/properly-removing-an-integer-from-a-listinteger o which removes an element by reference when dealing with lists of integers The main point to consider here is the one @Nikita..
Intersection and union of ArrayLists in Java http://stackoverflow.com/questions/5283047/intersection-and-union-of-arraylists-in-java and addAll is that these methods don't modify the original lists input to the methods. public class Test public static void main..
How to choose the right bean scope? http://stackoverflow.com/questions/7031885/how-to-choose-the-right-bean-scope scope for application wide data constants such as dropdown lists which are the same for everyone. Abusing an application scoped..
How to convert an ArrayList containing Integers to primitive int array? http://stackoverflow.com/questions/718554/how-to-convert-an-arraylist-containing-integers-to-primitive-int-array want to use the list iterator to avoid nasty costs with lists such as LinkedList public static int convertIntegers List Integer..
Making Distinctions Between Different Kinds of JSF Managed-Beans http://stackoverflow.com/questions/7223055/making-distinctions-between-different-kinds-of-jsf-managed-beans is supplying an ArrayList to JSF h selectOneMenu drop down lists that appear in more than one JSF view. If the data in the dropdown.. in more than one JSF view. If the data in the dropdown lists is particular to the user then the bean would be kept in session.. is supplying an ArrayList to JSF h selectOneMenu drop down lists that appear in more than one JSF view. If the data in the dropdown..
Update data in ListFragment as part of ViewPager http://stackoverflow.com/questions/7379165/update-data-in-listfragment-as-part-of-viewpager The ViewPager is on a vertical phone screen the lists are not side by side. Now a button on the ListFragment starts..
Java Reflection: How to get the name of a variable? http://stackoverflow.com/questions/744226/java-reflection-how-to-get-the-name-of-a-variable each method has a local variable table attribute that lists the type and name of local variables and the range of instructions..
What values can i pass to the event attribute of the f:ajax tag? http://stackoverflow.com/questions/7886453/what-values-can-i-pass-to-the-event-attribute-of-the-fajax-tag the h inputText component which renders input type text lists the following on attributes of which I've already removed the..
Does setting Java objects to null do anything anymore? http://stackoverflow.com/questions/850878/does-setting-java-objects-to-null-do-anything-anymore generally always be thinking of removing objects from lists maps etc by calling the appropiate remove method. The case where..
Seeking clarification on apparent contradictions regarding weakly typed languages http://stackoverflow.com/questions/9929585/seeking-clarification-on-apparent-contradictions-regarding-weakly-typed-language meaningless and you should avoid them. Wikipedia lists eleven different meanings for strongly typed several of which..
how to control a combo box by using another combo box swing http://stackoverflow.com/questions/10367834/how-to-control-a-combo-box-by-using-another-combo-box-swing work with models in How to Use Combo Boxes and How to Use Lists totorials. According to a selection in the first combo box rebuild..
When to use a List over an Array in Java? http://stackoverflow.com/questions/1589813/when-to-use-a-list-over-an-array-in-java Constraints Memory Concerns not really a good reason etc. Lists are much easier to use imo and have much more functionality...
Cannot create an array of LinkedLists in Java…? http://stackoverflow.com/questions/217065/cannot-create-an-array-of-linkedlists-in-java create an array of LinkedLists in Java&hellip I'm working on a sparse matrix class that needs.. a sparse matrix class that needs to use an array of LinkedLists to store the values of a matrix. Each element of the array i.e... a row of the matrix. And each element in the LinkedLists represents a column and the stored value. In my class I have..
Why doesn't Java Map extends Collection? http://stackoverflow.com/questions/2651819/why-doesnt-java-map-extends-collection element. That's why we don't have a map view operation on Lists. Update I think the quote answers most of the questions. It's..
Comparing the values of two generic Numbers http://stackoverflow.com/questions/2683202/comparing-the-values-of-two-generic-numbers Comparable . Thus I'll lose duplicate values. When using Lists Collection.sort will not accept my list due to bound mismatchs...
http://stackoverflow.com/questions/2762093/java-compare-two-lists Compare Two Lists I have two lists not java lists you can say two columns For.. not java lists you can say two columns For example List 1 Lists 2 milan hafil dingo iga iga dingo elpha binga hafil mike..
How do I use the Jersey JSON POJO support? http://stackoverflow.com/questions/5161466/how-do-i-use-the-jersey-json-pojo-support are all strings primitives classes similar to this one or Lists thereof I've tried using plain Lists instead of generic List.. to this one or Lists thereof I've tried using plain Lists instead of generic List T s to no avail . Does anyone know what..
Deep clone utility recomendation http://stackoverflow.com/questions/665860/deep-clone-utility-recomendation any utility for deep cloning for java collections Arrays Lists Maps NOTE prefer some solution without usage of serialization.. all fields to be copied and do this This will not work for Lists when using clone This is what clone for HashMap says Returns..
Google Guava isNullOrEmpty for collections http://stackoverflow.com/questions/6910002/google-guava-isnullorempty-for-collections Strings.isNullOrEmpty str Do we have anything similar for Lists Something like Lists.isNullOrEmpty list which should be equivalent.. str Do we have anything similar for Lists Something like Lists.isNullOrEmpty list which should be equivalent to list null list.isEmpty..
Array or List in Java. Which is faster? http://stackoverflow.com/questions/716597/array-or-list-in-java-which-is-faster keep all the data in a contiguous chunk of memory unlike Lists would the use of an array to store thousands of strings cause.. is faster. My personal opinion is that you should use Lists. I work on a large codebase and a previous group of developers.. code very inflexible. After changing large chunks of it to Lists we noticed no difference in speed. share improve this answer..
When to use HashMap over LinkedList or ArrayList and vice-versa http://stackoverflow.com/questions/7975802/when-to-use-hashmap-over-linkedlist-or-arraylist-and-vice-versa linked list hashmap share improve this question Lists represent a sequential ordering of elements. Maps are used to..
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 says that two List objects are equal if they are both Lists and have the same contents even if they are different implementations..
How to find a list of wireless networks (SSID's) in Java, C#, and/or C? http://stackoverflow.com/questions/917910/how-to-find-a-list-of-wireless-networks-ssids-in-java-c-and-or-c WlanClient.WlanInterface wlanIface in client.Interfaces Lists all available networks Wlan.WlanAvailableNetwork networks wlanIface.GetAvailableNetworkList..
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