Recent questions tagged java

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java - JPA/Criteria API - Like & equal problem

I'm trying to use Criteria API in my new project: public List<Employee> findEmps(String name) { CriteriaBuilder ... ) What's 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 - How to use dagger in a android library project

I'm currently trying to add Dagger to my android projects. For the apps projects its easy and clear to me ... builded in the Application Class? 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 - Where's javax.servlet?

I have jdk1.6.0_13 installed, but when I try to find a javax.servlet package, or press Ctrl+Space ... in standard distribution for developers? 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 parse Date from HTTP Last-Modified header?

HTTP Last-Modified header contains date in following format (example): Wed, 09 Apr 2008 23:55:38 GMT What is ... .util.Date from this 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 - How to explain whether Exception will catch RuntimeException?

This is very odd to me. RuntimeException inherits from Exception, which inherits from Throwable. catch(Exception ... of the inheritance? 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 easily convert a BufferedReader to a String?

@POST @Path("/getphotos") @Produces(MediaType.TEXT_HTML) public String getPhotos() throws IOException{ // DataInputStream rd ... do I do 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 - How to define properties for Enum items

I have read the question Difference of Enum between java and C++? but I'm still confused. I would like the ... it on how to implement 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 - How to make Sonar ignore some classes for codeCoverage metric?

I have a Sonar profile in Maven. Everything works fine except the code coverage metric. I want to make Sonar ignore ... > </build> </profile> 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: Customizing recent apps thumbnail (screenshot by default)

The app I'm working on shows some sensitive information that must not be shown on the "Recent Tasks" ... solutions to the listed workarounds? 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 - Setting the default active profile in Spring-boot

I want my default active profile to be production if -Dspring.profiles.active is not set. I tried the following in ... version = 1.3.5.RELEASE 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 ViewGroup crash: Attempt to read from field 'int android.view.View.mViewFlags' on a null object reference

We have found several cases for this kind of crashes reported by backend logging monitoring. It seems the ... logged against Android code? 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 split a String into a Stream of Strings?

What is the best method of splitting a String into a Stream? I saw these variations: Arrays.stream("b,l,a".split(" ... ("b,l,a"); } } 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 found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations:

I am trying to write a SOAP service using Spring, however I receive a Dependency Injection issue. ... is org.springframework.beans.factory.BeanCreationException: Could not...

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

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java - Easy way to get a test file into JUnit

Can somebody suggest an easy way to get a reference to a file as a String/InputStream/File/etc type object in a junit ... toSomeTest(){ ... } } 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 do you add PostgreSQL Driver as a dependency in Maven?

I'm trying to develop a Java application with Maven while using Hibernate with a PostgreSQL database for persistence ... what about other jars? 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 write multiple line property value using PropertiesConfiguration?

I have a properties file with a property with a List value (comma separated), how to write this property in ... comma to comma and backslash. 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 - Difference between a class and object in Kotlin

I'm new to Kotlin and have recently converted a simple file from java to Kotlin. I am wondering why ... would be greatly appreciated 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 create an array of 20 random bytes?

How can I create an array of 20 random bytes in Java? 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 - Pretty printing JSON from Jackson 2.2's ObjectMapper

Right now I have an instance of org.fasterxml.jackson.databind.ObjectMapper and would like to get a String with ... of sw.toString() 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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java - Trying to upload a file to a JAX-RS (jersey) server

I'm trying to upload a file and other form data using multipart/form-data client with Jersey. I'm uploading ... to get this working correctly? 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 - Transaction rollback and web services

Given an example of calling two web services methods from a session bean, what if an exception is thrown between ... standardized way to do so. 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 - Stanford Core NLP - understanding coreference resolution

I'm having some trouble understanding the changes made to the coref resolver in the last version of the Stanford ... help either. Thank you 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 - What is the fastest way to bulk load data into HBase programmatically?

I have a Plain text file with possibly millions of lines which needs custom parsing and I want to load it into an ... ); System.exit(errCode); } 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 - Automatic 'loading' indicator when calling an async function

I am looking for a way to automate showing and hiding a 'loading' message when calling an async service ... all the possible suggestions. Daniel 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 call a method in MainActivity from another class?

How do I call the method startChronometer in another class when the method is declared inside the main activity? Inside ... to add to the code? 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 - HTTP requests with basic authentication

I have to download and parse XML files from http server with HTTP Basic authentication. Now I'm doing it this ... easiest way to reach my goal. 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 - When to use actors in libgdx? What are cons and pros?

I'm writing simple solar system simulator. This is my first libgdx project. I'm using a Stage and Actors for ... are the pros for using Actors? 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 - What's the best alternative to wait...notify for low level synchronization?

As far as I know, wait() and notify() have been replaced with better concurrency mechanisms. So, what better ... classes - use your heads. See Question&Answers more detail:os...

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

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