Java
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JPA sets the where clause when querying the fields of two mapjoins
I'm trying to build a complex query My entity looks like this: @Entity public class Configuration{ @Id @Column(…… -
Java – how do I manage the native heap?
I'm studying the lazy list and I'm worried about it When the local heap is too large, how do we detect and control it …… -
Java – is there any way to use Sax parser and visitor mode?
I'm curious about this: if I need to use a Sax parser to improve efficiency (this is a big file) Usually I use somethi…… -
Java sequencer playlist
I currently have a very simple course: public class Music { private Sequence sequence; private Sequencer seque…… -
What is java locksupport Parknanos Net equivalent?
Basically, I need a way to start submicrosecond thread sleep, just like parknanos Thread. Sleep seems to be accurate t…… -
Java – how to access the webcontent folder from the web service method
I want to reach the file in the webcontent folder from the method in the web service in the same project For example: …… -
Add java compiler to Matlab?
When I entered mbuild setup in MATLAB (r2011a), there was no java compiler (JDK) available, although I had already ins…… -
Java – Android service activity 2 mode communication
In my team's Android application, I have a service running from startup. It communicates with the server to perform op…… -
Multimedia playing in Java
I need to play multimedia files in Java I have studied JMF and FMJ, but these have not been updated for several years …… -
javax. net. ssl. Sslhandshakeexception: fatal alert received: error in handshake APN
I'm trying to send a push notification to iPhone using java PNS, but I received the following error javax.net.ssl.SSLH…… -
Configuring spring web flow using java
I am using spring 3.1 and want to include spring web flow 2.3 One thing I really like about spring is that you can sup…… -
Java – propertyplaceholderconfigurer propertiesfactorybean only resolves location properties
I cannot have propertyplaceholderconfigurer work in my current configuration Give ApplicationContext The following cod…… -
Java – com4j wrapper Gen problem
I'm trying to use tlbimp-20110320 Jar generates a wrapper for com4j I also tried the same wrong 2008 version Even if I…… -
Java – how do I reference property files in executable jars and eclipse?
I use two properties files: log4j Properties and myapp properties. I want to load my applications correctly when I exe…… -
Java. Java in path with spaces security. auth. login. Config file
When I execute System.setProperty("java.security.auth.login.config",ejbLoginConfig); Using ejbloginconfig = ".. / conf…… -
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…… -
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…… -
Poor performance in Java – Solr space
I'm using Solr - 3.4 to filter space using a pattern with latlontype (subtype = tdouble) I have an index of about 20m …… -
Java – my android projects are in enum and string Duplicate declaration between XML
I have a string array for spinner and so on <string-array name="Animal"> <item >Cat</item> &…… -
Java – how to avoid losing punctuation when extracting data from MySQL database using JDBC?
First, I'm using: Java 1.7.0_02 MysqL 5.1.50 ZendServer CE (if that matters) The jdbc driver I use to connect from Jav…… -
Java – SWT text field setting and RCP command bound to key
I have an RCP application. I have a command that starts an entity Wizard (the edit wizard displays all fields of the e…… -
Java – lists the resolved properties in spring
There are multiple attribute file sources in my spring XML file. They have different order values, and some are option…… -
Java NiO selector can select no more than 50 selectionkeys?
I used siege to stress test my manually built file server. It is suitable for small files (less than 1KB), but it can'…… -
Java – iPOJO – @ reference does not inject services
There is an interface iservice in a package, which is implemented by serviceimpl class: public interface IService { …… -
java – KeyEvent. Getkeytext() returns special characters (such as’ vk_enter ‘) in OSX, but there is no solution on Windows XP?
I'm using keyevents and KeyEvent.getKeyText(KeyEvent.VK_...) To get the text corresponding to keyevent In OSX (lion), …… -
Security – overrides the US of the application_ export_ Policy and local_ policy jar
Can we override us through JVM or application parameters_ export_ Policy and local_ policy jar？ Solution There is no …… -
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Java – Custom log4j scrolling appender
My class code is as follows public class LogLevelFilterFileAppender extends FileAppender implements Cloneable{ pr…… -
Frequency control in Java
Is there any class in Java that can control audio I have found the class composundcontrol through Javadoc, but it is a…… -
How do I perform “less” paging from a Java console application?
I need to execute the less command from my java console application, using paging However, I found that the only way t…… -
How to create in Java MPP file?
I can use the mpxj library to create in Java MPX file Solution I maintain mpxj. The short answer to your query is that…… -
Java – configure handlerinterceptors in the @ configuration context
I'm in spring 3.0 In 6, @ configuration is used to use dependency injection instead of XML definition file I use mixed……