Java
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Multithreading – how do I implement atoms in clojurescript?
In clojure to address concurrency, we can use an atom to write: user=> (def my-atom (atom 0)) #'user/my-atom user=…… -
Use Java – getcontentresolver () and GetWindow () in dialogfragment
I'm trying to insert seekbar in the dialog box to change the brightness To this end, I wrote this code public class Lu…… -
Why user Do dir system properties work in Java?
Almost every article I've read tells me that you can't create chdir in Java Accepting the answer to this question mean…… -
Compare hashmaps in Java
I have two hashmaps: foo & bar HashMap foo is a superset of HashMap bar How to find out the missing "key" in HashM…… -
Why import javax Error in servlet. *?
I'm using java se 6 and eclipse with an error in the line import javax.servlet.* This import does not appear to have a…… -
Java – enum and class loader
Sometimes you may not even know that the environment in which you insert code has multiple class loaders In this case,…… -
Java 8 function constructor from templated object
I am using eclipse Luna service release 2 (4.4.2), Java 8 U51 I'm trying to create a method that will create an instan…… -
Java – place nested classes in a separate file
I have a nested class file, but it becomes long enough to be unreadable Is there any way to decompose nested classes i…… -
Java – eclipse Mars does not display the JBoss server
This is what I've tried >In eclipse Mars, go to help - > install new software > click the Add button and past…… -
Java: unchecked convert from X to Y / how to implement castornull
I have implemented this function: static <X,Y> Y castOrNull(X obj) { try { return (Y)obj; } catch(Class…… -
Package Java nio. File does not exist
I'm studying how to compile Java. Java from the command line This is what I got: This is what I got: /myjava/compile.c…… -
Java – HTTP 415 on file upload using Jersey
My restful file upload code: @Path("/upload") @POST @Consumes("multipart/form-data") public String post( @FormD…… -
Java – how do I deploy my war on Tomcat for so long?
I have a web application that usually takes a lot of time to deploy on Tomcat I suspect that a database connection is …… -
When Java TimerTask is scheduled in the timer, has it been executed?
I want to clarify about TimerTask When you have the following code: timer.schedule(task,60000); The task is scheduled …… -
Java 3D array assignment
I have an array that looks like this static String[][][] School= new String[1000][20][5]; >In the first bracket, I …… -
Java – advantages of using a dynamic client with jax-ws
What are the advantages of using dynamic clients with jax-ws services over using only generated client classes? What a…… -
Java – jaxp API that is not valid when unmarshalling JAXB
I have a JAXB object that I can ungroup very well However, if I add an element [] field annotated with @ xmlanyelement…… -
Java – sets the timeout for user input
Can I set a timer for user input? Wait 10 seconds – proceed to the next step, etc //wait several seconds{ String s = …… -
Rest – jaxrs API vs. jsr311 API vs. javax ws. rs-api vs. jersey-core
For each of the above, I'm a little confused and still confused This is my understanding of this: >Jaxrs API: conta…… -
Java – how to create a modal jdialog over another modal jdialog
I have a mode setting dialog that is a jdialog In this setup window, I put some components (including a button) into a…… -
java – TimeZone. Gettimezone (“CST”) returns GMT
I'm converting time from CST to local time, but gettimezone doesn't seem to work properly String cstTime = "2013-06-21…… -
Java – httpservletrequest#getheader (“user agent”) returns null browser name
I'm using java 6 I know very little about JSP and servlet I'm using the following code to get the name of the browser …… -
How to focus items in a Java combo box
Is there a way to center the items in the combo box in Java? I tried this, but it didn't work: myCombo@R_793_2419@.set…… -
Java simpledateformat interprets the parsed string as UTC
My time zone is GMT 1 Therefore, the "date" object and "22.09.1985 00:00 UTC" print "Sun SEP 22 01:00:00 CEST 1985" on…… -
Java – spring jmstemplate – add custom attributes
I use the spring API's JMS template and mappingjackson2messageconverter (version: spring-jms-4.3.4. Release. Jar) to p…… -
Java – programmatically check the available heapsize?
I'm using eclipse The problem is that if less than 512MB of memory is allocated, my application crashes Is there any w…… -
What is the shortest way to delegate an unimplemented method to an object contained in Java? [waiting for answer]
I include the primary object (with most functions) in helpers, which will provide a convenient method I have only one …… -
Java get download progress
I'm writing Java applications (using NetBeans as IDE and JFrame forms), part of which is downloading files How do I up…… -
Android rotation animation XML configuration
Here is the programming house jb51 CC collects and arranges code fragments through the network. Programming house Xiao…… -
Method for obtaining file name, class name, method name and line number in Java
Here is the programming house jb51 CC collects and arranges code fragments through the network. Programming house Xiao…… -
Java compressed or enlarged image processing
Here is the programming house jb51 CC collects and arranges code fragments through the network. Programming house Xiao…… -
Using POI to read and write excel and word
Here is the programming house jb51 CC collects and arranges code fragments through the network. Programming house Xiao……