Recent questions tagged Java

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java - How do i use the mask field in acl_entry table in Spring Security 3.1?

I use the Spring Security 3.1 ACL implementation. So based on a tutorial i have created a acl databse with the ... , that's not pretty handy. 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 - Grid Size in Spring batch

I have batch job which reads data from bulk files, process it and insert in DB. I'm using spring's ... equal to the concurrency in taskExecutor. 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 - Compare names of every resource with the content of a variable of sqlite database

I hope you can help me, I already researched my case but didn't found a good answer. I want to compare the ... you in advanced for your 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 - Default JDBC date format when reading date as a string from ResultSet

I'm looking at some code that basically does the following: ResultSet rs = ps.executeQuery(); String myDateStr ... rs.getString() consistent? 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 - Bluetooth client/server communication between computer and mobile phone

I need just a basic example or tutorial of making a mobile phone and a computer communicate via Bluetooth. A ... a Java Micro Edition MIDlet. 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 we Draw a lines between 2 panels in swing

Just want to connect panels by drawing a line b/w them. I am having two panels and both panels contains ... is my customized jtable 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 - connecting to a file-based derby database

I want to work with a file-based database using apache derby. I was wondering if anyone can carify how to ... any help would be much 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 - Using PreparedStatement pooling in dbcp

Can someone explain how exactly prepared connection pooling using dbcp can be used? (with some example code if ... statements from the pool? 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 use the key, in a condition in Cacheable annotation

I'm caching the results of a function using the @cacheable annotation. I have 3 different caches and the key ... correct way to implement 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 - JAVAFx Build Failed

I created an app with JavaFx for windows, which is really cool. I can run it from e(fx)clipse, everthing works ... you very much for your 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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284 views

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java - Spring get files and images from external folder on disk, outside webapps?

I have webproject which has images inside src/main/webapp folder. I would like to place images in different ... forward for your suggestions. 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 safely remove other elements from a Collection while iterating through the Collection

I'm iterating over a JRE Collection which enforces the fail-fast iterator concept, and thus will ... } } 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 pass variable from a servlet to a jsp page?

I have a servlet (front-controller), which analyse the request, prepare some necessary data (model) and then should ... What's the correct 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 - Utility class that re-throws a throwable as unchecked?

I am catching all throwables in a unit test wrapper method in order to reset some data in an external ... declaring throws is acceptable. 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 decorate the REST response in Spring (Boot)?

I've got a Spring Boot application that returns various objects that get encoded as JSON responses and I ... {Request,Response} level. See Question&Answers more detail:os...

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

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418 views

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java 9 - final variables are not functioning well in jshell

I am working with jshell of JDK9. I just created a final variable and assigned a value to it. And in ... work with final variables in jshell? 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 color picker - updating color array

I'm trying to create a color picker for Android that looks like a minimalistic version of Gimp's. So, it ... Any examples? 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 - What is the preferred way to modify a value in ConcurrentHashMap?

Let's say I have a Concurrent Map that is high-read, low-write, and needs to store application data: ConcurrentMap< ... } C) None of the above 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 - Customizing JTextField

I would like to know how to customize the ui of a jtextfield so I could create rounded rectangular border ... think of. Sincerely regards. 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 Draw the custom view as in google pay

This question has already been asked and an answer has been accepted here but the accepted answer is not what I ... could draw is a rectangle. See Question&Answers more detail:os...

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

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358 views

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java - Google adt/gwt support for eclipse 4.4 (Luna)

Have anyone gotten the release version of eclipse 4.4 to work with adt(Android development) and/or google web ... Plugin" which it is not. See Question&Answers more detail:os...

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

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221 views

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java - Share variables between JAX-RS requests

I have what I think is a very basic question about JAX-RS but I somehow can't easily find the answer. I am ... 1.3.0 implementation of JAX-RS. 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+Eclipse project sharing via SVN?

I am very new to Eclipse (Galileo, Eclipse IDE for Java Developers) and working on my first Android app, but ... they (successfully) 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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393 views

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java - Get original text of an Antlr rule

I am an ANTLR beginner and want to calculate a SHA1-Hash of symbols. My simplified example grammar: grammar ... to receive the original text. 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 - Getting ssl.SSLHandshakeException when using REST client with header but works fine with PostMan

I have an external REST resource with below details: The URL: abc.com/orders (the domain is with https) I need ... Verify return code: 0 (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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342 views

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java - Parametric Random Function For 2D Noise Generation

I'm attempting to generate infinite random terrain. The terrain should generate the same every time given the same ... " noise. Thanks, Jamie. See Question&Answers more detail:os...

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

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263 views

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java - Debugging ASM-generated bytecode with JDB (or similar)

So I have some malfuctioning code to debug where SOMEthing throws an NPE and I'd like to step through some generated ... what I am looking for? 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's workspace: Shall I put my images in 'src' or 'bin' folder?

I'm working in a project in Java and sometimes all my images randomly dissapeared from the project's bin folder ... is this happening? 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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