Recent questions tagged Java

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java - How to exclude specific TIFF reader from ImageIO?

Stack: Java - 1.8.0_91 Scala - 2.11.8 Library - it.geosolutions.imageio-ext imageio-ext- ... tiff.TIFFImageReader from ImageIO configuration? 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 WebView can't load certain sites

I'm trying to use JavaFX's WebView to load this site, but all I get is a blank screen. The WebView is working ... -b14 on Windows 8.1 64-bit. 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 does TimSort complain about broken comparator?

Java 7 changed the sorting algorithm such that it throws an java.lang.IllegalArgumentException: "Comparison method ... Any better ideas? 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 - Gradle OpenJFx11 : Error - JavaFx runtime components are missing

Context: Trying to create a simple JavaFx application using OpenJdK11 & OpenJFx11 Issue: I get an error as below when ... javafx.controls' ] } } 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 - Log file name to include current date in log4j

The question is a subset of this. I want a log file to be created everyday with the log file name format ... </appender> </log4j:configuration> 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 odd and even numbers and sum of both in a collection using Stream

How can I split odd and even numbers and sum both in a collection using stream methods of Java?8? public ... .println(oddAndEvenSums); } } } 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 - using Spring JdbcTemplate for multiple database operations

I like the apparent simplicity of JdbcTemplate but am a little confused as to how it works. It appears that each ... I using the right 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 - IPackageStatsObserver cannot be resolved to a type (Android)

I want to calculate the sum of all the cache memory utilizing the device. For this I am getting a compiled time ... anything about it!? Help !! 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 - Extending JPA entity data at runtime

I need to allow client users to extend the data contained by a JPA entity at runtime. In other words I ... present version as it was confusing. 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 - Testing PriorityBlockingQueue in ThreadPoolExecutor

I realized my ThreadPoolExecutor with PriorityBlockingQueue like in this example: https://stackoverflow.com/a/12722648/ ... be tested 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 - Path intersection in android

I have 2 path objects in my android code.I have tried all the way to check whether these paths are intersected ... any good response, 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 - spring batch file writer to write directly to amazon s3 storage without PutObjectRequest

I'm trying to upload a file to amazon s3. Instead of uploading, I want to read the data from database using ... there anyway we can 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 - Overriding generic methods with non-generic implementations

I'm experimenting with generics in Java, and thought of this example. If I have ClassA<T>, I can override it with ... , so that adds to the fun. 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 - Need an example of a primary-key @OneToOne mapping in Hibernate

Can somebody please give me an example of a unidirectional @OneToOne primary-key mapping in Hibernate ? I've ... 'd appreciate any response. 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 - In Apache spark, what is the difference between using mapPartitions and combine use of broadcast variable and map

In Spark, we use broadcast variable to make each machine have read only copy of a variable. We usually ... just for shared variables? 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 do SessionAttributes get cleared on GET redirect?

For simplicity's sake, these code snippets will be shortened. The purpose of this is to take a GET parameter, set ... ), I will gladly use 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 - List of JPanels that eventually uses a scrollbar

im trying to build a GUI for my Java application. I dynamically add JPanels, which are a "row" in my ... complettly used there is no scrollbar. 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 upload .mp3 file and image to http server?

My code for uploading image to server is : String userIdParameter = String.valueOf(userId); String fileName = " ... and image to the server. 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 - Communication between two different JFrames?

Hello as maybe you have heard about GIMP or something like that which uses different frames As a complete gui ... share. Regards Alok sharma 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 - Related jobs in JSprit

Is it possible to handle relations between jobs (in this case services) in jsprit? For instance one job has ... of restrictions? 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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284 views

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java - Hibernate validation - only validate if object is not null

I want to validate the myClass variable. The trouble is that myClass can be either null or a reference ... using jpa/hibernate annotations? 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 - In what order are the different parts of a class initialized when a class is loaded in the JVM?

Imagine a Java class which has most features that you can find in a class. For example: it inherits ... article explaining the correct sequence. 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 Resource Not Found when using executeable Jar

again I face a strange issue and hope someone here can help. I have a spring boot backend module, what works in ... . Any clue would be great. 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 - Decode a part of Bitmap from file in Android

I have a file with a very large image: for example 9000x9000. I can't load the Bitmap in memory because ... quality in the 100x200 image 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 use classes in Referenced Libraries in Eclipse

I have imported the algs4.jar file as a referenced library as seen above. All seems to be fine but I can't ... an option to use or import 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 - Using ProgressMonitorDialog in Eclipse 4 properly

I have a set of APIs that do file operations e.g. saveToFile(CustomObject objectToSave); Since a file operation ... How would I solve 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 - mongodb multi tenacy spel with @Document

This is related to MongoDB and SpEL Expressions in @Document annotations This is the way I am creating my mongo ... What am I 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 - Check non-numeric characters in string

I want to check whether the String contains only numeric characters or it contains alpha-numeric characters too. I ... suggest if I'm 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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