Recent questions tagged JAVA

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java - Error 404 issues using Struts application

I am having some issues running a Struts web app since few days. I tried several solutions from StackOverflow ... my console, problem view. 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, want to lock it to one directory

I have this program where u can download files and i want the JFileChooser to be locked to one folder(directory ... ().getName()); } 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 - Calling function from another activity

I have an activity that contains all the functions for controlling my database, and I want all other activities to ... What is the problem 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 - XML Parsing and deserialization

I have a xml file which Im reading it from my class <Testclasses> <Class>new SomeClass1()</class> <class>new ... the class object to this test. 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 can I make an interface instance method accept arguments of the same class only, really?

This SO discussion proposes the following idiom: public interface IComparable<T extends IComparable<T>> { int compare(T ... created a new post. 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 - Add Actions.scaleTo() to a Label in LibGDX

In LibGDX, I want to make a text animation for my game. Therefore, I want that my labels gets larger with ... scale? Thank you 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 - javafx datepicker how to customize

I have the simple code for date picker which disables all the dates which are before the chosen one, but I need ... ().add(gridPane); } } 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 - Passing an ArrayList report shows comma every item

I'm passing an List of String to JasperReports report via parameter. String jasperFileName = "C:\TestReportProcess. ... as java.util.Arraylist 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 - Finding the 3 most recently modified files in a long list of files

I have a file list which I want to sort and extract the top 3 last modified. Constraint: I cannot use ... memory and handle this effectively? 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 - Implementing a wormhole pattern using AspectJ

I'm looking for an example to a wormhole pattern implementation using AspectJ (would be interested if Guice AOP ... Action. 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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590 views

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java - Spring Security - 405 Request Method 'POST' Not Supported

I have implemented Spring Security to my project, but I am getting status 405 when I try to log in. I have ... added. 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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318 views

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java - What are class level, object level, explicit and intrinsic locking?

I have been going through Java multi-threading concepts. The more I go through them, the more confused I become. ... be very helpful for 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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228 views

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java - Change background color of JTable row based on column value

hi i am new in java jtable cellrendered. I am looking for a way that works in my program but i dont have ... . My program stop in 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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307 views

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java - HTML to PDF using iText : How can produce a checkbox

I have a simple HTML page, iText is able to produce a PDF from it. It's fine but the checkbox is ignored. What ... .flush(); out.close(); } } 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 - Making Spring 3 MVC controller method Transactional

I am using Spring 3.1 and have my DAO and service layer(transactional) written. However in a special case to ... ModelAndView("home.jsp"); } See Question&Answers more detail:os...

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

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297 views

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java - How to add an ImageIcon to a JFrame?

I'm trying to add an image to one frame but it seems it does not working. The image created by an ImageIcon ... .CENTER); setVisible(true); } } See Question&Answers more detail:os...

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

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159 views

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java - Hibernate Exception help: TransientObjectException

I am getting the following exception when I try to update an object: org.hibernate.TransientObjectException: object ... > </hibernate-mapping> See Question&Answers more detail:os...

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

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341 views

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java - Is javax.servlet.ServletContext set/getAttribute thread safe?

Having to use setAttribute() and getAttribute(String) in javax.servlet.ServletContext, I cannot find any information on ... that I am missing? See Question&Answers more detail:os...

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

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154 views

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java - How to switch from HttpClient to HttpUrlConnection?

I am creating an Android application and I send data from Android application to servlet through HttpClient. I use HttpPost ... ); i++; } } See Question&Answers more detail:os...

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

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226 views

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java - Parsing a json which contains duplicate keys

I'm trying to parse json with invalid structure which has duplicate keys using Jackson library. If a json has ... such json structure for 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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478 views

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java - Merge pdf documents of different width using iText

I am having problem while merging documents of different width using iText. Below is the code I'm using to ... effect. Please guide me further. See Question&Answers more detail:os...

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

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364 views

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java - How to auto-adjust font size of multiple JLabel based on container size in a smooth way?

I need to resize the font of multiple JLabel based on the scaling factor used to resize the container. To do this, ... .com/tZLOO.png Thanks, -s See Question&Answers more detail:os...

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

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339 views

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java - j2ee primefaces fileupload file saving destination

Today I've got a problem with the PrimeFaces FileUpload. It works nice, but the files are stored in JBoss' temporary ... how to get rid of 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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151 views

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java - ImageIO thread-safety

I see in the javax.imageio spec that thread-safety is not a goal, despite I've seen several examples using ... says, is ImageIO thread-safe? 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 solve the "Graphics Device initialization failed for : d3d, sw" Problem

I encountered the following RuntimeException when starting an application which uses JavaFX 11+: Graphics Device initialization ... ... 5 more See Question&Answers more detail:os...

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

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668 views

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java - Count number of days between 2 dates in JPA

I need to count the number of days between 2 dates in JPA. For example : CriteriaBuilder.construct( MyCustomBean. ... How would you 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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546 views

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java - How to Parse date in Simple date format in arabic locale?

i have date coming from server & is in the format = "2013-01-20T16:48:43" my application support Both Arabic ... ); return format.parse(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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577 views

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java - Gson: Expected begin_array but was STRING

I am facing the following error in parsing JSON data: Expected begin_array but was STRING at line 1 ... Expected BEGIN_ARRAY but was 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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