Recent questions tagged Java

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I get this definition : As name suggest fail-fast Iterators fail as soon as they realized that structure of Collection ... it=set.iterator();** 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 Actuator - MAX property

I am using Spring Boot Actuator dependency to get insights of application. For that, I have used Spring Boot Admin. ... value": 2.3612968 } ], 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 - Is there a quick way to recognize HTML ASCII codes in a String or TextView?

Here are some HTML ASCII Codes: http://www.ascii.cl/htmlcodes.htm I have a string that may look like "All ... ascii code, with an apostrophe? 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 - Scheduled executor: poll for result at fix rate and exit if timeout or result valid

Problem: I have a requirement to call a dao method at fix rate say every 10 sec, then I need to check ... complicated for such a trivial task ? 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 - Swing versus SWT

What criteria should I use to choose between SWT and Swing? I assume they both provide satisfactory GUI ... controls; ease of development. 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 - Is there a way to tell if a HTML hex colour is light or dark

I want font colour on my html page to change to black if the background colour of the row is light and ... looking for a scriptlet or javascript 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 - how to convert String from file to Date?

I am trying to process a CSV file in which some of the fields are dates of the format "yyyy-MM-dd" - ... .java:179) ... 45 more 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: How to get the area size of a drawn path?

My problem is to measure the surface area of a path. I generate a random Path and draw it on a canvas. After ... this here: link to the 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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java - Convert ANTLR parse tree to JSON

I have a working grammar and have implemented a listener (in Java). I can display the parse tree in the ... Swing via the TreeView 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 - Incompatible neethi.jar with WAS 7

I am deploying one application Apache CXF-2.7.5 with neethi-3.0.2 in websphere 7. I am getting ... loadClass(ClassLoader.java:609) 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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java - How to check if number is a decimal?

I create android app for dividing numbers. int a,b; int result = a/b; if (result==decimal){ Log.v ("result" ... I check if result is a decimal? 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 read/write text file in j2me

i want to know how to read and write text to a .txt file in j2me help me 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 - Toolkit.getDefaultToolkit().getLockingKeyState(...) never updates during program execution

I have the problem that Toolkit.getDefaultToolkit().getLockingKeyState(...) never updates. It reports correctly the ... toggling the button. 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 - Jackson API: partially update a string

I have a very complex Json object that I get as a String: { "a": ..., "b":..., /* lots of other ... a lot smaller (e.g: around 100 bytes). 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 - Profiled app with YourKit, still can't identify the CPU hog

I've got a Java application that is consuming 100% of the CPU most of the time (as indicated by cacti and ... each thread executes at some time. See Question&Answers more detail:os...

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

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370 views

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java - Vaadin (Flow): Navigating to destination with a shared object

Problem: I currently have a grid that displays content of type SomeModel. When I click an entry of that Grid ... ? Thank you 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 - Jersey REST Client : Posting MultiPart data

I am trying to write a Jersey client app which can post multi part form data to a Restful Jersey service. I ... types of data (File and JSON) See Question&Answers more detail:os...

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

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488 views

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java - RxTextView.textChanges with setText on Edittext

RxTextView.textChanges(editText) .map(CharSequence::toString) .debounce(200, TimeUnit.MILLISECONDS) .observeOn( ... using RxJava? 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 - ArrayList.trimToSize() method

Can I use ArrayList.trimToSize() method in dynamic arrayList ? If I use it , what will be happened ? Can I ... this method. 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 - The command line is too long Standard error from the DataNucleus tool

I am getting this error The command line is too long. mvn install Standard error from the DataNucleus tool org. ... command line is too long. 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 rotate a point around another point

I am writing a game. I need to know how to rotate point a around point b by a given number of degrees. I am ... to be part of my class, Point. 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 - ImageIcons on JButton are not showing up in Runnable JAR file

I have 6 JButtons on my GUI all have images on it, when I compile and run the code, all images on ... looks after executing Runnable JAR file 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 - Read properties file using jQuery or JavaScript

I am newbie in jquery. I would like to read Java properties file in my jsp page using javascript or jquery. ... Ajax or jquery or javascript? See Question&Answers more detail:os...

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

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787 views

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java - MIME-type checking with JMimeMagic - MagicMatchNotFoundException

I need check currentFile of MIME-type. If result is success and file have MIME-type return true. If wasn't ... solve this arises of exception? 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 disable javax.validation.api in JBoss 6.4

Similar questions: How to use bean validation 1.1 in JBoss EAP 6.4.0? How to change bean-validation version ... dependencies (e.g. resteasy)? 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 Auditing not working for the JpaRepository update method with @Modifying annotation, why?

I am working on Spring Data JPA and Postgres example. In this example, I've implemented Auditing by following link ... ") String status); } See Question&Answers more detail:os...

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

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318 views

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java - How get value from dataSnapshot?

When I debug this code, in databaseUser dataSnapshot has the values from User in database, but in the object user1, ... Evento"); return key; } See Question&Answers more detail:os...

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

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266 views

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java - Can i still use eclipse for android projects?

I prefer eclipse over android studio, my question is if I can still use it to build projects for future ... are for maven and gradle)? See Question&Answers more detail:os...

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

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