Recent questions tagged java

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java - Acquire full prefix for a component clientId inside naming containers with JSF 2.0

I am updating a component via AJAX in JSF: <h:form> <h:outputLink>Click me <f:ajax event="click" render=": ... like :foo:bar:x:y:messages. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to get byte[] from javafx imageView?

How do i get byte[] from javafx image/imageview class? I want to store my image as a Blob into my ... reference and work with paths/urls? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Spring-boot thymeleaf load HTML file from classpath

I've a multi module project structure like : - application (parent module) --- boot (web-app) ----- ... for searching templates on class path? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to prevent text from turning to ellipsis on small buttons in JavaFX?

If I make button relatively small, it's caption turns to ellipsis. How to turn off this feature? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - "unable to locate Spring NamespaceHandler" error

I'm creating a stand-alone Sava application with Spring, to handle the JDBC access. The application works fine on every ... /> </bean> </beans> See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Resource leak warning in eclipse

In Eclipse I received a warning Resource leak: 'ps' is not closed at this location that I don't understand. In ... or a java / eclipse problem? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Simplest way to pass float[][] to C++ via JNI

In my Java code I have a 2D float array float[x][4] floatArray. Here x can be between 1 and 25. ... the simplest and safest possible way? Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to convert jbyteArray to native char* in jni?

I am trying to convert a jbyteArray to native c string (char*) in jni? Unfortunately I can't find any documentation on ... "%s ", (char*) arr); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Executable jar won't find the properties files

I use this code in my program to load a properties file: Properties properties = new Properties(); URL url = ... be created at deployment time. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - NoSuchMethodError: com.google.common.util.concurrent.MoreExecutors.directExecutor conflits on Elastic Search jar

While creating Elasticsearch Client, I'm getting the exception java.lang.NoSuchMethodError: com.google.common.util. ... at execution time? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Input length must be multiple of 16 when decrypting with padded cipher

I have a server and client socket program, a server send a encrypted message to client, i.e. the server side ... :2086) what is the problem? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - BLOB vs. VARCHAR for storing arrays in a MySQL table

I've got a design decision to make and am looking for some best practice advice. I have a java program ... the reasons Java or MySQL specific? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - JPA Query MONTH/YEAR functions

How can I write a JPA query using MONTH function just like sql query? @NamedQuery(name="querybymonth", query=" ... : unexpected token - MONTH. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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239 views

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java - App not correctly configured to use google play game services

I'm using the BaseGameActivity class to connect to google play games services. The problem is that somehow authentication ... Can you help me? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Transparent background of a textarea in JavaFX 8

Since I am using JavaFX 8, all my textareas do not apply the transparency that has been defined in the corresponding ... Is that a known issue? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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294 views

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java - Is it possible to chain async calls using Guava?

I want to chain async rest service calls and have single callback when they finished. Is it possible to do it with guava? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Java7 WatchService - Access Denied error trying to delete recursively watched nested directories (Windows only)

I followed the Watching a Directory for Changes Java7 nio2 tutorial to recursively monitor the entire contents of ... is accessing nested files? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Problems occurred when invoking code from plug-in: "org.eclipse.jface"

I've got a new Java project at Eclipse from SVN and just tried to open the project in the ... /Users/saraiva/.eclipse_keyring -showlocation See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How is concurrency in Spring AMQP Listener Container implemented?

My container XML config: <rabbit:listener-container connection-factory="myConnectionFactory" acknowledge="none" concurrency= ... be thread safe? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Does array changes in method?

When I write like this: public class test { void mainx() { int fyeah[] = {2, 3, 4}; smth(fyeah); ... it change values only for array elements? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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434 views

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java - Why does 'File.exists' return true, even though 'Files.exists' in the NIO 'Files' class returns false

I am trying to determine if a file exists in a network folder: // File name is "\QWERTYfolderdirA123456.TXT" Path ... by File but not by Files. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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395 views

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java - Velocity can't find resource

Something is wrong and it is very frustrating. I read on velocity's homepage that when I run a webapp then some ... . Thank you for your time:) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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208 views

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java - Aspect-oriented programming in android

What would be the best way to implement Aspect-oriented programming (AOP) in an Android application? Would it ... with the mobile battery? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - unable to compile JNI program rJava

I want to install rJava but it doesnt work. When I am typing R CMD javareconf in the console I get the following ... . Any ideas how to fix it? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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376 views

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java - RESTEasy - @Path requiring a full path?

I was messing around with JAX-RS and made an application which calls REST services which produce JSON. I tried ... the /rest prefix... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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158 views

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java - How can I modify the behavior of the tab key in a JTextArea?

I'm creating a form in Java Swing, and one of the fields is a JTextArea. When I use the Tab key on all ... text. How can I modify this behavior? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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258 views

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java - How can I detect if caps lock is toggled in Swing?

I'm trying to build a better username/password field for my workplace and would like to be able to complain when ... specific way to do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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964 views

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java - How to store Date field as ISODate() using jackson in MongoDb

I am trying to persist a java object having java.util.Date field in mongo collection using fasterxml jackson. ... Thanks in advance for help. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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