Java
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Java – Apache commons DBCP connection pool error: timeout waiting for idle objects in spring hibernate applications using spring transactions
I have read various stackhover process problems and contents of similar problems on the Internet However, I can't find…… -
Java – use imageio Write() creates a JPEG file of 0 bytes
I'm trying to write a way to take an image and save a 100 x 100 thumbnail of the image However, when I save the file, …… -
Correct SQL query format in Java
I seem to be able to get the syntax correct for JPA queries to the database Squirrel SQL works well The database is De…… -
Java – create a jar file and run it on the raspberry PI
This is a very common problem and it is possible to mark it as a duplicate, but it cannot be solved even after reviewi…… -
java – JBoss 7.1. 1 failed to start because of unexpected element ‘pool’
When I add a pool element, I receive the following error message: If I delete a pool element, how it works I have chec…… -
Java – Concurrent pairing
I'm looking for a Java concurrency idiom to match a large number of elements with the highest throughput Consider that…… -
Java – after a period of time, let the thread go to the last
I have a thread that may get stuck and continue running Therefore, after a period of time, I want it to stop executing…… -
Why does Java use heap data structures to store objects?
Or it does not use heap "data structures" The name allocated to memory (internal pool) was just called "heap"? If so, …… -
In Java, is there a type constant equivalent to Pascal
In Delphi / Pascal, there is a mechanism through which local variables in a method can remember the value from one met…… -
Using recursive methods in Java
For homework, I was asked to write an inclusion method for the custom linked list public class OrderedList { private …… -
Java – streaming video using xuggler
I can successfully play the video with xuggler using the following code I need to be able to stream from InputStream i…… -
Java – filechannel ByteBuffer and hashing files
I built a file hash method in Java, which accepts the input string representation of file path and file name, and then…… -
Cross platform with asynchronous support Net websocket server Library
Are there any cross platform (read: single friendly) libraries that provide websocket server support and allow asynchr…… -
How do I send events (push notifications) from Java EE applications?
I have a Java EE application where the model is updated very frequently from various sources In addition, I have a ric…… -
Java – enum: have I just done something I don’t need?
I have an enumeration class. It has several constants. I want to add some static values focused to indicate which enum…… -
Java – jlabel can have img tag
I'm trying to display a jlabel with several lines of text and images as follows: @ h_ 502_ 2@String html = " hello "…… -
Java – spring batch: create an itemreader that reads XML files from a web service
I am trying to create a spring batch job that will process the XML file that will be provided through the rest call I'…… -
Java – strange copy constructor
I have two classes: abstractmailingdirections and directionload Both have a copy constructor as follows: public Abstra…… -
Java – is there any way to ICO file decoded to be greater than 16 × 16 resolution?
I'm studying Android and trying to download and display a favicon (. ICO) from the website on ImageView So far, I have…… -
Java – ColdFusion memory leak when calling CFC directly without method parameters
We had memory problems for a long time I finally found out how to copy the problem, but I don't know what caused it or…… -
Java – call ggplot. Java from rserve 1KB blank PNG image
See English answer > ggplot's qplot does not execute on sourcing 1 When this code is executed in the R console, a c…… -
Java array syntax substitution
See English answers > What does int []... Arrays mean in Java? 8 yes public void fn(Character[]...){} amount to pub…… -
Create a mongodb query in Java using $or $in
I am trying to write a java code using the mongodb API to create this mongodb query: { "$or": [{"prd" : {"$in" : ["123…… -
Java – alternative to randomaccessfileorarray (byte [])
Who can tell me the alternative method of random access file or array (byte []) of iText Solution From located http://…… -
Java – core and core_ Differences between RT and JSTL Tags
When I use <% @ taglib URI = "http: / / Java. Sun. COM / JSP / JSTL / core" prefix = "C"% > for my struts 1.3 10…… -
Java – a technique for extending classes using private constructors
Is there a standard technique to "extend" classes with private constructors, like most singleton classes? Specifically…… -
Unexpected token using lower bound wildcard (Java)
I have something similar: interface Foo<T> { //... lines [0,45]... /*line 46*/ <R,X super T&R> Li…… -
How to determine if another process is using the file (Java)
I tried many examples, but no one worked I also try to use trylock() It always returns false Why? private boolean chec…… -
Java – using enumerations in Scala
I have Scala style enumerations object SomeObject { final object SomeEnum extends Enumeration { type SomeEnum =…… -
Java – add setup steps for multiple JUnit test classes
In a project, there are multiple test classes, and each test class contains multiple test methods For example, I want …… -
How to generate XMI files for Java source code?
I am writing a program in Java language, which takes java source code as input and outputs XMI file, which contains th…… -
java – org. apache. hadoop. mapreduce. counters. Limitexceededexception: too many counters: 121 max = 120
I'm running a Hadoop job (from oozie) with few counters and multiple outputs I got the following error: org apache. ha……