Recent questions tagged Java

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java - how to maintain variable cookies and sessions with jsoup?

public boolean isGood(String path) { if (p != path) { good = false; } if (good) { try { ... . Any advice would be greatly appreciated. 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 - c3p0 hangs in awaitAvailable with hibernate

I have console application that hangs during execution. Here is my configuration: cfg.setProperty("hibernate.connection. ... Is this c3p0 error? 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 - Convert wav audio format byte array to floating point

I am reading a .wav audio file using Java AudioInputStream.The audio file is 16 bit PCM signed, with ... = byteArrayToFloat(audioBytes); } 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 - Advice on handling large data volumes

So I have a "large" number of "very large" ASCII files of numerical data (gigabytes altogether), and my ... some Java-relevant efficiency tips? 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 - Configure proxy to Jersey client

I would like to configure a proxy server to my Jersey client. I don't want to configure the proxy to the whole ... how can I do it? 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 - Binding a map of lists in Spring MVC

I am not sure if this is a complex problem but as a starting person this seems a bit complex to me. I ... either my JSTL expression is not right 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 - JSF: Cannot catch ViewExpiredException

I'm developing a JSF 2.0 application on Glassfish v3 and i'm trying to handle the ViewExpiredException. But ... sorry for confusing you both! 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 - Best way to start a background thread on deployment

I have a Spring Boot application deployed in Tomcat 8. When the application starts I want to start a worker ... the thread is not started). 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 - Hadoop mapreduce : Driver for chaining mappers within a MapReduce job

I have mapreduce job: my code Map class: public static class MapClass extends Mapper<Text, Text, Text, ... , Class, boolean, JobConf) 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 - Proper usage of Spring mvc 3 with hibernate (Spring ORM)

I'm starting a new project, trying to do things right this time(so more than one question), I might ... some improvements in my project? 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 - Get Owner Name of an Android Device

The following code works on an emulator, but fails to run on Samsung Galaxy S III. final String[] projection = new ... , i.e. for a seminar. 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 - Accessing Image Data Bytes in ARCore

I've created an ARCore Session and attached an OpenGL texture id through the Session#setCameraTextureName method to ... when using ARCore? 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 - Refresh/Reload Application scope managed bean

I have a problem to refresh or reload an application scoped managed bean. It behaves as cached data bean. So ... based on given time? 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 - Specifying memory limits with hadoop

I am trying to run a high-memory job on a Hadoop cluster (0.20.203). I modified the mapred-site. ... constraints, which are difficult to manage. 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 - Struts 2 "%" sign and '#" sign in OGNL

Anybody can tell me how to use "%" and "#" sign in STRUTS2 OGNL? I google around, but can't find any ... a link of documentation of this. 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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238 views

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java - How to use OpenCV with IntelliJ IDEA 12

I'm trying to use IntelliJ IDEA 12 to develop OpenCV 2.4.5 applications in Java. I've followed the ... add the natives to my classpath. 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 - Split-Screen in LibGDX

This question is short and simple. How do I create a split screen effect in LibGDX. If I create two ... documentation on the LibGDX site. 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 create mvc based application without using framework

Struts, Spring and a few other frameworks implement the MVC architecture to separate the representation of information ... needed for that? 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 - SessionNotFoundException: Session ID is null. Using WebDriver after calling quit()? (Selenium)

I am trying to write some selenium automated UI tests using Cucumber/Java. If I have only one test in my ... driver.get(value); } 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 - Important frameworks/tools to learn

Heyja, a frequently used answer to the question "What is so special about Java?" is "The tools and frameworks" ... get the interesting jobs? ;-) 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 - JScrollPane - Zoom relative to mouse position

I need to calculate the new position of the viewport when zooming in to an image. The UI is built up as ... ); this.imagePanel.repaint(); } 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 - JavaFX8 - sun.util.logging.PlatformLogger not found Exception in NetBeans 8

I have recently installed JDK8 + Netbeans8 (downloaded the bundled setup from Oracle site) on my Windows 8. ... some other configuration 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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java - Adding -javaagent to Tomcat 6 server, where do I put it and in what format?

I′m trying to install an application health monitoring application that can monitor J2EE web transactions and I ... Any advice is appreciated 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 - Enable Spring AOP or AspectJ

This is following on from this question: Spring autowired bean for @Aspect aspect is null My initial understanding ... : Spring AOP vs AspectJ 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 can I create a password?

I want to give maybe a million password to some users that should be like: It must have at least 6 characters ... I use Random here? How? 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 can I easily compress and decompress Strings to/from byte arrays?

I have some strings that are roughly 10K characters each. There is plenty of repetition in them. They ... assert(original.equals(decompressed); 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 deserialize an object persisted in a db now when the object has different serialVersionUID

My client has an oracle data base and an object was persisted as a blob field via objOutStream.writeObject, the ... for wrong class ? 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 - Using JAXB to support schemas with minor variations

The Situation I need to support generating XML documents based on schemas that vary only slightly between each other. ... by Blaise, no less!) See Question&Answers more detail:os...

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

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