Recent questions tagged Java

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java - Sorting array of objects by field

I have objects Person{ String name; int age; float gradeAverage; } Is there an easy way to sort Person[] ... I don't fully understand them. 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 - LibGdx, How to handle touch event?

I am LibGdx Newbie, and trying to make my iceCream image touchable. I like to know how to set the input-process(by ... )); batch.end(); } } 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 a default constructor with Byte Buddy

I want to intercept some method calls on one of my classes but those classes dont have a default constructor. ... there an easier/other way? 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 2 event dispatching to underlying nodes

Is there a correct way to solve the problem with event propagation between two sibling panes? For example we have ... mouse. Thanks for advise. 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 intercept all requests in spring REST controllers?

I have a bunch of controllers like: @RestController public class AreaController { @RequestMapping(value = "/area", ... 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 - Random value from enum with probability

I have an enum that I would like to randomly select a value from, but not truly random. I would like some ... these values? Code found from 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 - Why are most of the examples using ArrayList

Developing Java, you have always learned that its best to create an ArrayList by using the List interface as ... explicitly setting the 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 - Are there reliable alternatives to Sun's JVM for desktop & enterprise development?

With the recent announcements from Oracle side, we have started to work on a plan for phasing out migration ... to require licencing fees. 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 - Running groovy tests with Maven

I have a folder structure as below ProjectName - src - test - groovy - java When I run command mvn clean ... > </dependencies> </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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java - Setting session timezone with spring jdbc oracle

I have a spring/jdbc/oracle 10g application. The Oracle server database timezone is set to GMT + 2 JVM ... dbcp.BasicDataSource) ? 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 - Android force Stop callback to application?

If an app is forced stop by following the steps Settings->Application->ManageApplications -> --> Force Stop , Does ... triggered by the User ) . 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 download using RichFaces

I got the following to work already: User can upload a file (i.e. a compressed archive) User can uncompress the file ... .SEVERE, null, ex); } } 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 use Weblogic (12 C) without the application context in the URL?

I am working on a web project that requires Weblogic server and the only way I can view the site after deploying ... with someone else's 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 - Will I receive GCM messages if Android kill my app and if I do a Force Close from the settings?

I'm a newbie to Android development and I'm interested in two things which is connected to Google Cloud ... will I receive GCM notifications? 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 pause execution while JDialog is open

How can I make my application pause when I open custom JDialog and after the dialog is closed to make continue again. 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 - Mapping the same url to different methods based on request body in spring

I want to know if it's possible to map the same URL to different methods in the RestController class, based ... be called. Is this possible? 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: how to fetch only not-logically deleted objects

Nearly every table in our database has a FK to the Auditing table which logs created, updated and deleted status (date ... " ORDER BY c.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 - file.encoding has no effect, LC_ALL environment variable does it

In the following Java program running in Linux using OpenJDK 1.6.0_22 I simply list the contents of the directory taken ... putchar(' '); } } 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 if a finalizer makes an object reachable?

In Java, finalize is called on an object (that overrides it) when it's about to be garbage collectioned, ... reachable again, what happens then? 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: Get MIME Type on File Upload

I'm doing a file upload, and I want to get the Mime type from the uploaded file. I was trying to use ... the correct value? 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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java - How to write unicode text to pdf with pdfbox?

I try to use Apache PDFBox 1.8.6 to create a PDF in Java. (See code below) If I write the string: Hello! ... ).log(Level.SEVERE, null, ex); } 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 - Accessing a for loop variable inside an inner class

I have an array of arrays of int. DataArray[X][Y] I would like to create a thread for each X, which ... ); } Any help would 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 - Hibernate and NonUniqueObjectException

i have an entity that contains two other entities with @ManyToOne relationship. @Entity public class A extends ... ? Thank 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 - how to create tab with system get property?

I know that I can find the new line of system with System.getProperty("line.separator"); does the line.separator will ... do the same for tab ? 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 boot - taking control of 404 Not Found

I'm trying to figure out the simplest way to take control over the 404 Not Found handler of a ... a NoHandlerFoundException thrown and handled? 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 File To Base64 using streaming sometimes missed 2 bytes

i am writing to ask for the proper solution for solving the following difficulties: I am required to encode the ... fin.close(); return 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 do I programmatically write a shortcut to a specific page on the homescreen of the Android launcher?

I am currently working on an Android application whereupon I programmatically write a shortcut to the home screen. ... in the API? 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 - Performance of Object Typecasting

How costly is Object Typecasting in terms of performance? Should I try to avoid Typecasting when possible? See Question&Answers more detail:os...

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

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