Recent questions tagged java

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java - ClassNotFoundException: org.hibernate.service.jndi.JndiException

I'm getting the following stack trace... java.lang.ClassNotFoundException: org.hibernate.service.jndi.JndiException java ... be causing 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 - Use variables in pattern matcher

I have the following: if (mobile.matches("[0-9]{6,20}")) { ... } But would like to replace the {6 ... I include variables in the Reg Exp? 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 - working directory in sbt

I would like to be able to run the java program in a specific directory. I think, that it is quite ... remember about this in your 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 - Execution order of of static blocks in an Enum type w.r.t to constructor

This is from Effective Java : // Implementing a fromString method on an enum type private static final Map<String, ... What am I missing 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 - System.gc() calls by core APIs

Some of you probably know that some of core java APIs make explicit calls to System.gc(). I know two cases when ... direct call to System.gc()? 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 - Retrofit 2.0 + GSON Unable to invoke no-args constructor for interface

I'm using Retrofit 2.0 in my app. Everything was quite good, but when I started request with no args, GSON ... but it doesn't change anything. 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 - unhandled exception org.json.jsonexception

I'm working on an android app, and the app must save a java object in json format into the SQLite database. I ... } } Can you help me please? 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 - Find angle of a point from center of circle

If I have an image 720, 720 that looks like this.. How do I work out the angle of the touched x,y given ... always to the top and not rotated. 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 - amazon s3 upload file time out

I have a JPG file with 800KB. I try to upload to S3 and keep getting timeout error. Can you please figure ... bucketName, key, is, metadata)); 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 writing to server

I am uploading a file from one server to another server using a Java Program 'POST' method. But I am getting ... { e.printStackTrace(); } } 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 System.out writes in a servlet?

I am just curious to know, what happens when System.out.print() is called in a servlet? Where does it write the ... of System.out in a servlet? 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 - Joining tables without relation using JPA criteria

I have two tables with no modeled relation: Table comm with columns: name date code Table persondesc with columns ... do this JPA and Hibernate? 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 Comparator.comparing doesn't work with String::toLowerCase method reference?

I am trying to sort an array of Strings by reverse order (ignoring case), without modifying it, and just ... what is the simpliest workaround? 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 get the default font for Swing JTabbedPane labels?

Does the text in Swing components have a default font? In particular, what about tab labels on JTabbedPanes? I'm ... I grabbed of a Swing app. 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 Combine Multiple Jars into One?

I've read so many articles/explanations on this and spent too many hours, but everything is either too broad ... to automatically sign it too. 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 the database time with JPQL?

with native SQL I get the database time with a statement like: SELECT CURRENT_TIMESTAMP with JPQL I get the same ... last two lines? 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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550 views

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java - What is the exact difference between "ExpectedConditions.visibilityOfElementLocated" and "ExpectedConditions.presenceOfElementLocated"

My apologies in advance if my question sounds primary, I am very new at QA and Selenium. What is the exact ... but did not figure it out. 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 has org.apache.batik.dom.svg.SVGDOMImplementation gone?

In the documentation for batik, it shows how to get an instance of the DOM implementation from the class org. ... implementation in batik 1.8? 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 - OpenJFX support for 32-bit systems

I would like to build my JavaFX app for Windows x86 arch. So I've downloaded Adopt OpenJdk 32-bit build and used ... can I build it by myself? 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 - Can't import classes, IntelliJ showing BOOT-INF prefix and it seems to be related

This is with Java and Maven - I am trying to import some classes from a project that I could either ... mycompany.project.my.package.one.bravo 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 @GenericGenerator in a package level annotation

I'm trying to create a @GenericGenerator annotation at the package level so it can be used by all the entities ... disconnect could be? 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 - ProcessBuilder can't find file?!

Another question in quick succession but this has to be a really obvious error that I am not seeing. I' ... cannot find the file specified 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 to prefer a varargs list to an array?

I'm implementing an API an have a method which you pass a list of paths where the program reads resources from ... passing in an array better? 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 - JPanel removeAll doesn't get rid of previous components

I have a swing application in which I display images in a JPanel. If the app is unable to produce the ... cdPanel to completely redraw itself? 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 a string resource in a Toast

My code is: public static void ToastMemoryShort (Context context) { CharSequence text = getString(R.string. ... please? Many thanks Baz See Question&Answers more detail:os...

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

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576 views

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java - Is -System.nanoTime() + System.nanoTime() guaranteed to be >= 0?

Hi all I have a piece of code which looks like this: public class Test { public static void main(String args[] ... ? (-900,000,000 nanoseconds?) See Question&Answers more detail:os...

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

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697 views

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java - Why did I get "FileUploadException: Stream ended unexpectedly" with Apache Commons FileUpload?

What is the reason for encountering this Exception: org.apache.commons.fileupload.FileUploadException: Processing ... Stream ended unexpectedly See Question&Answers more detail:os...

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

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754 views

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java - Exception in thread "main" cucumber.runtime.CucumberException: No backends were found

I am developing my Selenium-JVM framework with Cucumber and while running my first feature got below error. Please ... in project. Please 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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