Recent questions tagged JAVA

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java - Setting up Tomcat 7 on server: "NB: JAVA_HOME should point to a JDK not JRE"... Why?

I'm trying to set up Tomcat 6 on my server instance (Fresh install of Windows Server 2008 R2 Enterprise). I ... 's needed to run a webservice? 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 crosscut annotated methods and constructors?

This is what I'm doing: @Aspect public class MethodLogger { @Around("(execution(* *(..)) || initialization(*.new ... build 23.1-b03, mixed mode) 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 - Hide application launcher icon in title bar when activity starts in android

I've searched SO but not found similar questions as I'm not sure how to phase it in a sentence. I am using ... ">@color/blue</item> </style> 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 Data JPA - Is it possible to sort on a calculated property?

Suppose you have the following Entity: @Entity public class Game { @Id @GeneratedValue private Integer id; private ... specific is also ok) 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 - Eclipse JRE or JDK missing

I am trying to use Eclipse on a friends computer but we keep getting this when we run Eclipse We have the ... installed the black berry plug in. 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 - Converting a time String to ISO 8601 format

I am trying to create a String in a format like 2015-08-20T08:26:21.000Z to 2015-08-20T08:26:21Z I ... which someone can suggest ? 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 call a particular method before killing a storm topology

How to call a particular method before killing a storm topology. I have created a topology in storm, I wanted ... framework. 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 - Do we have a MultiBiMap ?

As we now, there is the concept of BiMap and multiMap but is there a multiBiMap ? so what do I mean ... where you combine these two concepts. 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 does loading this jpg using JavaIO give CMMException?

ImageIO.read(imagePath) with this file gives a CMMException, why cant Java cope with this seemingly valid file ... .ImageIO.read(Unknown Source) 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 configure kafka topic retention policy during creation with Spring?

I need to configure retention policy of a particular topic during creation. I tried to look for solution i ... configuration in spring-mvc. 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 reference the 'normal' spring data repo from a custom implementation?

I want to extend a JpaRepository with a custom implementation, so i add a MyRepositoryCustom interface and a ... deserve a separate 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 - org.openqa.selenium.remote.internal.ApacheHttpClient is deprecated in Selenium 3.14.0 - What should be used instead?

I am currently using Selenium 3.14.0 library in which org.openqa.selenium.remote.internal.ApacheHttpClient is ... new EdgeOptions()); 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 - Join fetch: "query specified join fetching, but the owner of the fetched association was not present in the select list"

I have a following code: public class ValueDAO implements BusinessObject<Long> { private Long id; private String code; ... to get only codes. 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 - Type safe heterogeneous container pattern to store lists of items

I'm trying to implement a type-safe heterogeneous container to store lists of heterogeneous objects. I have ... implementing this? Many 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 - Having a "constants"-class in JSF

I'm building a web-application using JSF/Primefaces. I need to have a "constants"-class, i.e. a class ... . Any ideas/suggestions are welcome. 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 have multiple instance of Service in Android

Can we have multiple instance of a Service in Android ? I want a service which can make phone silent on a ... code hint will help a lot. 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 instantiate a Singleton multiple times?

I need a singleton in my code. I implemented it in Java and it works well. The reason I did it, is ... by using a different class loader? 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 - Enums, Singletons and Deserialization

Enums are considered best way for singletons and one of reasons for this is that it implicitly inherits ... serialization problem of singletons? 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 Binding List<Object> to Form:checkboxes

I can't seem to get my form to bind to the checkboxes control. I read many posts on here and tried a few ... (name); setValue(role); } } 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 TableView dynamic column and data values

I'm testing myself with a simple CSV Viewer using JavaFX and I'm stuck at populating the table data. I do ... // Requires an ObservableList! } See Question&Answers more detail:os...

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

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1.6k views

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java - why is bufferedwriter not writing in the file?

Here is the code snippet. read = new FileReader("trainfiles/"+filenames[i]); br = new BufferedReader(read); ... silly... anyways.thanks a lot 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 - write to xlsm (Excel 2007) using apache poi

I have written java file for writing xlsm(Excel 2007). Using Apache POI Library, Writing xlsx file is success. ... e.printStackTrace(); } 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 @ExceptionHandler and multi-threading

I've got the following controller advice: @ControllerAdvice public class ExceptionHandlerAdvice { @ExceptionHandler( ... annotated methods? 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 a JOptionPane with 4 options

I need to make a custom dialog with 4 options but as far as I can tell you can only have one with ... make the JOptionPane allow four choices? 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 - Splitter blows up on simple Pattern

I am just starting to us Guava in place of Google-Collections. The Splitter class seemed cool. But when I use ... , the Pattern is dead simple. See Question&Answers more detail:os...

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

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937 views

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java - Why are member objects initialized after the super class's constructor?

I ran into an interesting problem yesterday and while the fix was quite simple, I'm still a bit fuzzy on ... specific? Thanks for any insight! See Question&Answers more detail:os...

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

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2.2k views

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java - Spring WebFlux: set max file(s) size for uploading files

I'm using flux of FileParts to upload files @RequestPart(FILES) Flux<FilePart> files And trying to limit maximum ... does not look secure 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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1.4k views

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java - Load image from a file inside a project folder

I'm trying to load an image from a file without using a FileChooser. The folders are: TestProject -src -- ... understand how to load this image! See Question&Answers more detail:os...

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

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