Java
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Java – changing the log4j properties file at run time will result in the creation of an empty default log
I have an application that uses log4j to log in to a text file, and I put a log4j. Net in my executable jar file Prope…… -
Java – JPA, many to many relationship, delete all previous relationships and enter new relationships
Here, I am trying the many to many relationship in JPA. I have created tables "tblcourse" and "tblstudent". Students c…… -
Java – spring roo updates password fields or does not update all fields
I have an entity user with user name, name, etc The user also has a password attribute I disabled its rendering in the…… -
Java – jtextpane – dynamic line wrap
I tried to use jtextpane1 setText(“xxx xxxx xxx xxxxx xx xxx xxxx xxx etc ……”); But jtextpane doesn't wrap it up and o…… -
Java – lock free protection for synchronous acquisition / release
I have a shared temporary file resource, divided into 4K blocks (or some such value) Each 4K in the file is represente…… -
Java FIFO queue with overflow to disk
I am / preparing an application based on the producer / consumer model In my case, there will be a producer generating…… -
Give Java Setrequestproperty method of lang.illegalstateexception: method cannot be set after connection is established
HttpURLConnection con = null; HttpURLConnection con = null; Response response = new Response(); String…… -
Java – converts the original class object to a specific class object
I'm studying hibernate and spring Here I attach my method public List getAnalyticsbyid(String userId) { Session se…… -
Web form framework in Java
What are the common ways to build web forms in Java and groovy? Spring and Grails provide the corresponding taglib, bu…… -
Java – C3PO helper thread deadlock
I use C3PO pool with my GUI application I have the following configuration overrides.put("maxStatementsPerConnection",…… -
Java applets are needed to help test screen readers
My employer bought us a "Jaws" screen reader license to test potential visually impaired new employees I have been tes…… -
Java – CDI constructor injection is not applicable to transient non serializable dependencies
I like CDI's constructor injection, but now I've found a use case where constructor injection obviously doesn't work a…… -
Playframework – POJO, JPA binding and check box
Play uses "unresolved parameters are safely ignored. Type mismatches are also safely ignored." When binding parameters…… -
Trim start and end from wav file using java sound API
I have basic knowledge However, the output file just repeats the wav title over and over again The generated file size…… -
Java – use VTD-XML to optimize the speed of parsing XML files
I am using VTD - XML to parse a large number of XML files I'm not sure if I used the tool correctly - I think so, but …… -
Java – will occurs when trying to enable users via LDAP_ NOT_ Perform error
I am trying to create a new active directory user through LDAP, but the user was disabled at the time of creation I tr…… -
Java – stop code formatting and remove spaces from eclipse
I recently started using java again. I set up my development environment in eclipse. It has a convenient format functi…… -
Java – run a jar file in PHP and write a file
When executing the jar file, I have the following problems in PHP I use the following command: exec("java -jar JavaPro…… -
Is it possible to call the local player in J2ME development and play the video?
I want to call / open the native player for my application I have to open my local video player and play my video with…… -
Is there a console GUI widget for Java? Is the eclipse console view an option?
I want to create a console based UI Do you know any Java console widgets? I mean, are there any projects that build so…… -
Java – include dependencies in Maven assemblies instead of actual artifacts
I want to create a maven assembly that contains the delivery dependencies of the artifact, not the artifact itself I t…… -
Java – maven – suspend building a project
I'm using Maven to build projects that may or may not have children I have many good projects that can be built well b…… -
How to download files using spring MVC in Java?
There are many upload examples, but I can't find any downloads I'm using spring 3.0. I need to generate some text buff…… -
Processing redirection 302 in Java
I've been trying to handle redirection in Java code (302)... And the code I use private void loadHttp302Request(HttpMe…… -
Java – an XSLT custom function that returns a node set or an XML fragment (not a simple data type)
I'm trying to develop an XSLT custom function that can return node sets or XML fragments. Let's say: Input file: <r…… -
Recursive algorithm of space filled Hilbert curve in Java
I'm learning to write code in Java. I've learned the recursive part of Java programming I understand the basics of rec…… -
In Java, how do I write the file I recently read?
I am creating a notepad type program Here's how I read and write from files: BufferedWriter out = null; try { Sys…… -
Java – what is the reason why spring STS hangs?
Sometimes STS hangs at first Is it possible to find the reason? Could there be logs or could it be started in debug mo…… -
Java – how can I say “these two generic types are the same” in the map?
I have a method toString (object), which delegates the transformation to the handler The handler is defined as follows…… -
Rest Java status 500 internal error
OK, so I'm writing a rest server in Java and trying to test it, but I've been receiving error code 500. Please help I'…… -
Java – how to record the execution of the nutch plug-in
I'm trying to build a custom nutch plug-in with special requirements I'm in Hadoop Log, but it has no relevance I adde……