Recent questions tagged Java

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java - How to do optimistic locking in hibernate

I am completely new to Hibernate and Spring and in my attempt to learn Spring, Hibernate, Maven etc I only ... "last commit wins" scenerio 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 - Hibernate Native Query problem with named parameters

I have a problem with Hibernate Native Query. I have one SELECT that selects array slice (PostgreSQL database). ... Hibernate version is 3.2 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 and deploy war in Intellij

I have a multi-module project in my IntelliJ environment. I want to create and deploy war for only one ... mac / windows make difference? 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 - Check if Cookie exists with JSP EL

I am trying to check if a cookie exists on a JSP page using the Expression Language. I have a cookie called ... instead of the empty string.) 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 - Conditional injection of bean

I want to have inject a bean based on a String parameter passed from client. public interface Report { ... appretiated. Thanks in advance 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 send byte[] array in retrofit

How do you send byte[] array in retrofit call. I just need to send over byte[]. I get this exception ... please help with this. Thanks Dhiren 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 - Tomcat load balancer solutions

I'm looking for a good load balancer to use with Tomcat. Our application doesn't store anything in the session ... on linux if that matters. 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 - Full utilization of all cores in Hadoop pseudo-distributed mode

I am running a task in pseudo-distributed mode on my 4 core laptop. How can I ensure that all cores are ... <value>4</value> </property> 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 - Storing rotated / flipped images in Google App Engine

I'm trying to rotate / flip an image that is already sitting inside Google Cloud Storage. This is the ... the correct serving URL is created 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 debug an Android Background Service?

I have been developing a PhoneGap application for Android which contains a Background Service. My question is: How ... to achieve that? 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 - Packing two shorts into one int, dealing with negative and positive

I'm making a class PackedUnsigned1616 which stores two unsigned shorts in one int, and a class ... that would help tremendously. 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 - JAXB HashMap unmappable

I want to convert a HashMap in a POJO class to XML. I tried using the XmlAdapter but it results in ... it produces the following output: 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 - PowerMock PrepareForTest annotation causing problems with AmazonSQSClient constructor

I'm having some trouble with the PrepareForTest annotation and creating a new instance of an AmazonSQSClient. ... FormValidation 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 - Invalid cookie header : Unable to parse expires attribute when expires attribute is empty

In an android application, when using DefaultHttpClient to get an URL content (executing HttpGet) I receive the ... empty expires? 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 - Is there any benefit in using Maven Multimodule when working in a small application?

We are building a small application using different architectural layers such as domain, interface, infrastructure and ... a Tomcat container. 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 - JavaFX InvalidationListener or ChangeListener

I am only interested whether a property has changed or not, but not in the new value. Is it advantageous ... some kind of intermediate state). 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 - Jersey REST WS Error: "Missing dependency for method... at parameter at index X"

I am getting the following error: Apr 09, 2013 12:24:26 PM com.sun.jersey.spi.inject.Errors processErrorMessages ... getEntity()).build(); } 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 - The import "javax.jnlp" cannot be resolved

I am learning Java and trying to run some examples using Java web start. However, I cannot seem to find that ... are part of my installation. 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 - No bean named 'springSecurityFilterChain' is defined error with javaconfig

I'm having some problems adding spring security. It shows an error that says:No bean named 'springSecurityFilterChain' is ... How can I 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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java - Disable HTTP OPTIONS method in spring boot application

I had developed rest API on spring boot application. The APIs accept only GET , and POST , but on ... Need to disable OPTIONS method. 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 - Maven, Access denied to: http://repo1.maven.org/maven2

I have just downloaded last version of Maven. And when i am trying to run mvn archetype:generate i get ... HTTP request. Thanx to Patouche 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 - CompletableFuture allof(..).join() vs CompletableFuture.join()

I am currently using CompletableFuture supplyAsync() method for submitting some tasks to common thread pool. Here ... is deeply 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 - "cannot find symbol - class Scanner" error

This is my Code public class Workshop3 { public static void main (String [] args) { System.out.println ("please ... = new Scanner (System.in); 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 - Jackson Convert Object to Map preserving Date type

I am using Jackson ObjectMapper to convert a Java Bean to a Map. However, it is not preserving the Date object ... a simple solution to 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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java - BatchUpdateException: the batch will not terminate

I have an application which processes a very large file and sends data to an oracle database (using ... execute the statement individually? 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 JPA from rolling back transaction?

Methods invoked: 1. Struts Action 2. Service class method (annotated by @Transactional) 3. Xfire webservice call ... roll back the transaction? 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 - Why does reading from Process' InputStream block altough data is available

Java: Process p = Runtime.getRuntime().exec("myCommand"); final InputStream in = p.getInputStream(); new ... ' output stream without blocking? 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 read a text file from "assets" directory as a string?

I have a file in my assets folder... how do I read it? Now I'm trying: public static String readFileAsString( ... but both failed... any advice? See Question&Answers more detail:os...

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

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