Recent questions tagged Java

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java - how to get the binary values of the bytes stored in byte array

i am working on a project that gets the data from the file into a byte array and adds "0" to that byte ... binary format. Can anyone 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 - JPA doesn't support interfaces well..implications?

I was going through some posts in Stackoverflow on JPA and I read multiple places that JPA does not support ... cannot annotate the interface? 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 - Logback on Jboss duplicates prefixes and new lines when logging

I'm working on java web project. I use Wildfly 10. I want to use it with logback. I did some configuration: ... beginning. How to prevent 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 - Handling an invalid security certificate using MATLAB's urlread command

I'm accessing an internal database using MATLAB's urlread command, everything was working fine until the ... workaround for this 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 - JFileChooser on OS X

JFileChooser looks nothing like the native widget. I seem to remember reading some hack to get it look like the ... look like the native widget? 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 - Multipart file upload using spring boot with tomcat version 9.0.31 is failing

Multi part file upload in spring boot application is not working with tomcat version 9.0.31. But this ... Please help to resolve 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 - Spark list all cached RDD names and unpersist

I am new to Apache Spark, I created several RDD's and DataFrames, cached them, now I want to unpersist ... information. Am I missing something? 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 - Generic screws up non-related collection

Why do collections that are not related to the template class drop their type? Here is an example: (Sorry, it will ... B generic so I added to B 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 - 1MB quota limit for a blobstore object in Google App Engine?

I'm using App Engine (version 1.4.3) direct write the blobstore in order to save images. when I try ... data)); writeChannel.closeFinally(); } 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 does Hibernate's batch-fetching algorithm work?

I found this description of the batch-fetching algorithm in "Manning - Java Persistence with Hibernate": What is the ... step algorithm ... :) 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 - Create and upload a file on selenium grid

One of tthe test cases that I have is to upload a file to the application. Witouth grid this can be easily ... file and get the absolute 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 determine the exact state of a BufferedReader?

I have a BufferedReader (generated by new BufferedReader(new InputStreamReader(process.getInputStream()))). I'm quite new ... JDK version 1.5. 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 - Android: how to access the SIM contact table using the SDK?

I am trying to use this query to read the contacts on the SIM. cur = managedQuery(Uri.parse("content://icc ... main(Native Method) What's wrong? 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 jackson-dataformat-xml on android

I'm strugling with using jackson-dataformat-xml on android I have some very basic code that works fine on oracle jre ... on either #1 or #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 - Android Gradle compiling commons-io creates duplicate in library tree

I'm trying to build and maintain an old application for work but I can't get past the build phase. In my ... stop so I can complete the 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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793 views

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java - Unable to build Hibernate SessionFactory exception from nowhere

I have a strange error appearing every time i want to deploy my application. I'm using IntelliJ IDEA 2016.3. My ... to get any help and 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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308 views

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java - google oauth2 how to get private key for service account

Can somebody please tell me how do I download the certificate from google cloud console for the service account. I ... am bit lost over here. See Question&Answers more detail:os...

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

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263 views

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java - Configuring JDO in Spring 3.1?

I used to have all my DAOs extend the JdoDaoSupport class which is now deprecated in Spring 3.1. I've ... project via mvn eclipse:eclipse. 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 log application auditing to separate file on Wildfly 8

I have a Java EE application running on Wildfly 8 in which I want to enable audit logging. Using an ... > </root> </configuration> 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 a way to use setOnClickListener with an Android Spinner?

The java.lang.RuntimeException is "Don't call setOnClickListener for an AdapterView. You probably want ... onItemSelected ... 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 - Drawing a Bitmap to a Canvas with an alpha gradient

I'd like to draw a Bitmap on a Canvas, with a (linear) alpha gradient applied. The important point is ... (without applying any color overlay). 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 - Getting javassist.NotFoundException with PowerMock and PowerRule in JUnit with Mockito

I have integrated PowerMock and PowerRule in JUnit with Mockito. Here are my dependencies: <dependency> <groupId> ... has the same 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 - Ehcache cache size at runtime

I am running a large VM in production and would like to understand more about my cache size at runtime. My caches ... slug up in a big 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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277 views

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java - What's the difference between InputStream and ByteArrayInputStream?

The following code is extracted from the java web start chapter of the core java volume 1. ... between InputStream and ByteArrayInputStream? 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 - Catch a deserialization exception before a ControllerAdvice

Here is a problem: I have a controller that takes an input model. Lets say public class AppUserUpdateData ... of ControllerAdvices in a 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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424 views

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java - Lucene 4 Pagination

I am using Lucene 4.2 and am implementing result pagination. IndexSearcher.searchAfter provides an efficient way of ... there a better approach? See Question&Answers more detail:os...

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

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298 views

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java - Jackson2ObjectMapperBuilder enable field visibility ANY

I'm using spring-boot and want to customize the ObjectMapper created. What I want to do is be able to ... bean I'm currently exposing ? See Question&Answers more detail:os...

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

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308 views

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java - All trusting HostnameVerifier causes SSL errors with HttpURLConnection

I'm using HttpURLConnection to connect to SSL sites. Occasionally these use self signed certificates / ... built around HttpURLConnection) See Question&Answers more detail:os...

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

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