Recent questions tagged JAVA

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java - How to check if session exists or not?

I am creating the session using HttpSession session = request.getSession(); Before creating session I want to check if ... How would I do 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 - How to map two JPA or Hibernate entities on the same database table

In our project, we have an entity 'Restaurant' with nearly 30 fields(some have relationships with other ... returns 'Restaurant' objects?? 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 external library in Android studio 0.3.6

So I am fairly new to Java, and I am trying to add this library to my project. The problem is that ... folder and select "Add as Library" 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 - JSP template inheritance

Coming from a background in Django, I often use "template inheritance", where multiple templates inherit from a common ... </body> <html> 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 - Detecting a JRadioButton state change

How can I detect when a JRadioButton is changed from 'unselected' to 'selected' when clicked with the mouse ... much better or cleaner solution. 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 make Git work with IntelliJ?

I am going to use Git version control by IntelliJ Community Edition in order to make branches of the programs I ... to put my work through. 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 Eclipse's Display View for Debug?

At the link below it explains that the "display view allows you to manipulate live code in a scrapbook type fashion ... what I am doing 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 - How to load public certificate from pem file?

I was trying to extract RES public key from the file below -----BEGIN CERTIFICATE----- ... key from a file.. 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 verify multiple method calls with different params

I have the following method that I wish to verify behaviour on. public void methodToTest(Exception e, ActionErrors ... check for both values? 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 - Set credentials on an Android Webview using secured HTTPS connection

I would like to create an Android Webview that connects to a website via a secured HTTPS connection with the use of ... .com/secured_area"); } } 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 - Error Occurs while Running Android Project - Unsupported major.minor version

While running the code it shows a alert Errors occurred during the build Errors running builder 'Android Package ... update-able adt bundle. 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, Entity manager, select many columns and get result list custom objects

How I can get list of custom objects, like results below query: SELECT p.category.id, count(p.id) FROM ... and number of products in category. See Question&Answers more detail:os...

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

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240 views

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java - Spring mvc 3.1 integration tests with session support

I'm using the new spring-test in the 3.1 version to run integration tests. It works really well but I can't ... . It returns 403 instead of 200. See Question&Answers more detail:os...

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

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334 views

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java - Spring 4.0.0 basic authentication with RestTemplate

I am currently working on integration of a third party application with our local reporting system. I would like ... help will be 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 - How does LCP help in finding the number of occurrences of a pattern?

I have read that the Longest Common Prefix (LCP) could be used to find the number of occurrences of a pattern ... out how LCP helps 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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425 views

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java - Return Type for jdbcTemplate.queryForList(sql, object, classType)

I'm executing a named query using jdbcTemplate.queryForList in the following manner: List<Conversation> conversations ... Object?? 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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424 views

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java - How to uninstall JDK on Mac OS?

Folks - I am facing challenges while trying to uninstall JDK from my MAC (macOS High Sierra Version 10.13.4 ... share your thoughts on 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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299 views

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java - Regular expression to select all whitespace that isn't in quotes?

I'm not very good at RegEx, can someone give me a regex (to use in Java) that will select all ... (thisisatest"sentence for the regex") See Question&Answers more detail:os...

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

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198 views

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java - RxJava Combine Sequence Of Requests

The Problem I have two Apis. Api 1 gives me a List of Items and Api 2 gives me more ... information, ExtendedInformation extendedInformation); } 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 doesn't this thread pool get garbage collected?

In this code example, the ExecutorService is used one and allowed to go out of scope. public static void main(String ... as a back-up 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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186 views

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java - Setting a custom HTTP header dynamically with Spring-WS client

How do you set a custom HTTP header (not SOAP header) dynamically on the client side when using Spring-WS? See Question&Answers more detail:os...

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

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357 views

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java - JUnit 4 Expected Exception type

I am trying to do a JUnit test on code that someone else has written, but I cannot figure out how to ... clueless as to the exception type. See Question&Answers more detail:os...

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

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256 views

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java - How to specify validation group for @Valid?

I get so parameters in @Controller @RequestMapping method: @ModelAttribute("myCandidate") @Valid Candidate myCandidate, ... for myCandidate ? See Question&Answers more detail:os...

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

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524 views

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java - How to set 'Content-Disposition' and 'Filename' when using FileSystemResource to force a file download file?

What is the most appropriate, and standard, way to set the Content-Disposition=attachment and filename=xyz.zip using ... when the JVM exists. 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 JUnit tests found' in Eclipse

So I'm new to JUnit, and we have to use it for a homework assignment. Our professor gave us a project ... println(result.wasSuccessful()); } } See Question&Answers more detail:os...

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

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173 views

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java - Convert XML to JSON format

I have to convert docx file format (which is in openXML format) into JSON format. I need some guidelines to do it. 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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300 views

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java - Android Content Provider database leak issue

I am writing a content provider for this application and in my content provider I am opening a database ... cursor of database results? See Question&Answers more detail:os...

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

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390 views

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java - my ideal cache using guava

Off and on for the past few weeks I've been trying to find my ideal cache implementation using guava's ... I rethink my caching strategy? See Question&Answers more detail:os...

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

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