Recent questions tagged java

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java - Why does DataOutputStream.writeUTF() add additional 2 bytes at the beginning?

When I was trying to parse xml using sax over sockets I came across a strange occurence. Upon analysing I noticed that ... "Data: " + data); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - what's the difference between #{} ${} and %{}?

I'm currently working with struts2, and I just don't understand what the difference is between ${var}, #{ ... (without the brackets) any ideas? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - HttpClient set credentials for Kerberos authentication

I am trying to authenticate with a kerberos/HTTP host. Using Apache HttpClient as my client - and a slightly ... Appreciate any help on this. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Using annotations for exception handling?

Let's say I have a method that throws an Exception of some kind. The exception-throwing code lies in a ... for something that may not exist? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Jersey Client: Adding Cookies to Request

I am trying to write a library that accesses a RESTful web service using the Jersey Client API. The service ... on this is much appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Arrays.asList() doubt?

People say that asList method convert the array into list and its not copying, so every change in 'aList' will reflect into ... b.add("a");//5 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Spring Data Rest: RepositoryEventHandler methods not invoked

I am trying to add a RepositoryEventHandler as described on Spring Data REST documentation to the REST repository shown ... Boot 1.1.5.RELEASE See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Can we have uneditable text in edittext

I am using an EditText. Is it possible to have a part of text uneditable and the rest editable in the same EditText? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - difference between @FindAll and @FindBys annotations in webdriver page factory

Please explain the difference between @FindAll and @FindBys annotations in webdriver page factory concept. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Can I dynamically unload and reload (other versions of the same) JAR?

I am writing a server program which is used to run unit tests of an API (displaying lots of information ... workaround' or a different concept. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Is it possible to run a socket server and socket client on the same machine?

In java it is possible to create a socket server and a socket client, is it possible to have an instance of ... running on the TCP/IP layer. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - largeHeap=true manifest tag not working?

I′m developing a very memory-consuming app and want to use the largeHeap-Tag, which should give the application a ... 48MB. Can somebody help? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to understand Spring @ComponentScan

I'm following a tutorial about Spring MVC and I cannot understand something about the @ComponentScan annotation ... these view controllers? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why does Tomcat work with port 8080 but not 80?

I have started and tested Tomcat under Port 8080 (default). Now I altered the connector port to 80 and restarted ... -8" redirectPort="8443" /> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Creating a scaled bitmap with createScaledBitmap in Android

I want to create a scaled bitmap, but I seemingly get a dis-proportional image. It looks like a square while ... wrap my head around it. Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Removing certain characters from a string

I am thinking about using String.replaceAll() to remove certain characters in my string. It is unclear which ... escape them too, right? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Detached entity passed to persist when save the child data

I'm getting this error when submitting the form: org.hibernate.PersistentObjectException: detached entity passed to persist ... I doing wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What is the fastest way to read a large number of small files into memory?

I need to read ~50 files on every server start and place each text file's representation into memory. Each ... and replace mainly)? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - get the contents from the webview using javafx

I am working on a swing application using JAVA FX controls . In my application i have to take print out the html ... } catch(Exception ex) { } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Missing Codebase manifest attribute for:xxx.jar

When I launch application from jnlp I receive message "Missing Codebase manifest attribute for:xxx.jar" what does it means? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Garbage Collection and Threads

AFAIK when a GC is doing its thing the VM blocks all running threads -- or at least when it is ... bound by thread and memory-allocation. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Maven Package Compilation Error

i created a webapp project using maven in eclipse. when i run the command mvn package in command prompt it ... . still it shows same error See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Maven in Eclipse complains that "Unable to locate the Javac Compiler" whenever POM changed

I got error message every time I changed my pom.xml in eclipse. Build errors for myapp; org.apache.maven. ... =D:Javajdk1.6.0_23 Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - for-loop, increment by double

I want to use the for loop for my problem, not while. Is it possible to do the following?: for(double i = 0 ... 25) I want to add double values. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Do I have to close FileOutputStream which is wrapped by PrintStream?

I'm using FileOutputStream with PrintStream like this: class PrintStreamDemo { public static void main(String args[]) { ... (out.close();)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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457 views

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java - How to customise Jackson in Spring Boot 1.4

I've been unable to find examples of how to use Jackson2ObjectMapperBuilderCustomizer.java in spring boot 1.4 to ... boot or other packages. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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139 views

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java - Closing streams in the middle of pipelines

When I execute this code which opens a lot of files during a stream pipeline: public static void ... checked exception in RuntimeExceptions. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How does jsp work?

I am wondering does JSP ever get compiled ? The reasons why that I am asking is because whenever I deploy ... the normal request/response cycle. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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