Java
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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…… -
Java – gradle dependencies are not recognized in IntelliJ
I am using gradle as a dependency management system or any other way to develop spring boot application After adding s…… -
Java – what is an interface based framework?
I'm reading effective Java and reading static factory methods to create objects Chapter 2, item 1 Do you have an advan…… -
Java – how to use reflection to call methods with parameters?
This is my lesson: public class A{ private void doIt(int[] X,int[] Y){ //change the values in X and Y }…… -
Java – capitalize the first word in a string with multiple sentences
For example: String s = "this is a.line. Over" Should come out "This is a.line is. Over" I thought about using string …… -
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…… -
Java generates QR code with zxing
Here is the programming house jb51 CC collects and arranges code fragments through the network. Programming house Xiao…… -
Extend string jdbctemplate to obtain the primary key of the inserted data
Here is the programming house jb51 CC collects and arranges code fragments through the network. Programming house Xiao…… -
Android application splash instance
Here is the programming house jb51 CC collects and arranges code fragments through the network. Programming house Xiao……