Recent questions tagged JAVA

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java - How to (horizontally) align text of PDTextField in PDFBox?

I have a program that create TextFields inside a PDF-file so it can be used as a form. I would like to have the ... ); but I didn't find 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 - Is it possible to display Swing components in a JSP?

I was wondering if I could pop up JOptionPanes or other Swing components from within a browser using 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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java - How to parse a UTC offset dateformat string into the resulting date separated by | symbol

I have a very peculiar question where I am trying to parse "2019-12-25T17:00:00-05:00" such that it ... will render the expected result? 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 - switching JPanel within main window

I have an application that allows users to select an option and based on the user selection a JPanel is removed from ... .getMessage()); } } } 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 - File names for JSP include directive to avoid compilation of them

I join to project where code duplication in JSP avoided by include JSP directive (static, like #include in C). ... how to resolve my question. 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 setting annotation value as Class<?> from a constant, why?

This is my annotation: @Target( { ElementType.METHOD } ) @Retention(RetentionPolicy.RUNTIME) public @interface AuditUpdate ... mean? 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 - Tomcat: adjust memory proportions

I have a Tomcat instance running on a Windows 2008 Server with 4GB of RAM. The server is dedicated to this ... of memory that Tomcat can use? 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 take single snapshots from a webcam?

I want to take a snapshot with my webcam using java and save it to a jpg file. What are the ... be greatly appreciated. Greetings, Burkhard 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 - Pitest can't detect class of test

i have problem with my configuration of maven and pitest. Pitest generation mutation is ok but he can't see ... Created 20 mutation test units 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 - Include/Exclude asset folder/directory in sbt/play-framework

I am trying to include a gulp, angular project within a play-framework 2.4.X app. There is a node_modules folder, ... , as I am new to SBT. 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 me - XML parsing not working on android build of lwuit app

I use Kxml2 parser to parse the xml response I get as a response from a remote page. It is for user ... add, for Android to work properly? 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 get transactions to a @PostConstruct CDI bean method

I'm experimenting with Java EE 7, CDI, JPA and JSF. When the webapp starts, I would like to run an ... initialization method in a CDI bean? 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 - Hibernate Criteria Query for multiple columns with IN clause and a subselect

I have a question very similar to this question. I am selecting all data from table1 for all matching unique ... Criteria using my original SQL. 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 - DateTimeFormatter auto-corrects invalid (syntactically possible) calendar date

Java DateTimeFormatter throws an exception for when you try a date that goes outside of a possible range, for ... sift out these instances? 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 - couldn't attach file send email android 11

I am developing an application that sends processing reports via email. When completing the processing data in the ... the file to the email 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 and why JVM checks that the return type of entry method main(String args[]) is void and not anything else?

I will try to answer both, please correct me if I am wrong: Where: If a static method is being called ... symmetry in all Java programs written. 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 - JSPG0122E: Unable to parse EL function in Websphere 8

I am moving a web application from Websphere 6.1 to Websphere 8, and I am encountering the following error in one ... a clue what is wrong 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 - How to center string output using printf() and variable width?

I'm creating an output in Java using printf() to create table headers. One of the columns needs ... correct formatting string should be? 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 - Detect hidden bluetooth device with known ID

I have the target bluetooth device MAC-ID and would like to see if it is in range. How can I establish a ... m using bluecove (java) for 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 can I get a list of all sessions in Spring?

I'm developing a web app using Spring Boot 2 and Gradle. I currently implemented a custom remember me mechanism ... m not using Spring Security. 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 - JetBrains IntelliJ Error launching Intellij Platform - Error invoking main method

I have IntelliJ IDEA and other JetBrains products installed and they worked great (PyCharm, Android Studio, Clion, ... is not the 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 - CXF client: unable to find valid certification path to requested target

I am trying to implement a client for a CXF-based web service that I also wrote. My web service works great (tested ... to work on this now... 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 - Spring + Hibernate @autowired is null in ConstraintValidator

I have search and found a lot of topic on this issue, but for whatever reason the solutions does ... 4.3.12.RELEASE] at org.springframework.transaction.interceptor.TransactionInte...

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

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java - W/Firestore: [CustomClassMapper]: No setter/field for class Android

I was trying to load data from Documents class using Recyclerview, but the error appear on logcat "W/Firestore: (21.1.1 ... (); } } } }); 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 GetLastError reliably work with JNA?

I'm using various Win32 API functions in my Java application and I use GetLastError to get information on failed ... .copyOf(buffer, result)); 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 set the list of ciphers and protocols to be used for sockets created by using HttpsURLConnection?

The normal way to get an SSLSocketFactory would be to initialize a new SSLContext with a TrustManager, ... initialize a trust manager? 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 - Align icon and JCheckbox in JPopupmenu

I have a Problem with some icons and check-boxes in a JPopupMenu. The Check-boxes and Icons are not aligned The ... at the picture: Any tips? 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 - Best way to detect duplicates when using Spring Hibernate Template

We have an application which needs to detect duplicates in certain fields on create. We are using Hibernate as ... caused by a duplicate entry. See Question&Answers more detail:os...

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

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