Recent questions tagged JAVA

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java - PDFBox API: How to change font to handle Cyrillic values in an AcroForm field

I need help with adding Cyrillic value to a field using the PDFBox API. Here is what I have so ... this font Helvetica encoding: WinAnsiEncoding 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 - Switch Panels in a JFrame

I have 2 JPanels and 1 JFrame, and I'm trying to switch between panels when I click a button.. I ... private javax.swing.JButton jButton2; } 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 - Make JPopupMenu Display with a Certain Bottom Left Coordinate

Say that I want to make a button in Java in such a way so that when you click on it, a ... left coordinate matches a given coordinate? 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 close ServerSocket connection when catching IOException?

Sorry for question, but I'm totally noob in Java. What is the best practice to execute ServerSocket.close() when caught ... ... } } 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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java - Nimbus L&F - Change Background color of Progress Bar

i'm developing a little GUI application with Java using Netbeans Editor. I've put in a JFrame a simple ... effect of the original color? 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 - Create Desktop shortcut

I am working on a java application. I want to create desktop shortcut of my application's Exe file. Is is ... it manually by right clicking ? 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 2.26: register @Inject in ResourceConfig bindFactory cannot convert Factory to Supplier

I'm now using Jersey and I want to Inject a GeneralForm map into the Resource class context, which accepts all ... .util.function.Supplier<T>)) 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 - Instantiate inner class object from current outer class object

I am wondering if the following is valid in Java: class OuterClass { OuterClass(param1, param2) { ...some ... myself well. 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 - Can I force the order of dependencies in my classpath with Gradle?

A project runs on Google App Engine. The project has dependency that uses a class that can't be invoked on ... way to solve this problem? 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 - Laying out a keyboard in Swing

I've been trying to reproduce this layout: Here I am: using: import javax.swing.*; import java.awt.*; ... so any other 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 - Why can't I instantiate DataImportHandler in Solr on JBoss?

I'm trying to set up Solr 3.5.0 on JBoss 5.1. Everything works quite fine. I copied war into deploy dir, ... more importantly: how do I fix 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 - Safe publication through final

Even after going though this, I am still not clear about how usage of final causes safe publication in the below ... ); return safe; } } 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 shouldn't I use Thread.start() in the constructor of my class?

I've been searching for justification as for why you should not call a thread's start method inside a constructor ... has a few more details. 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 does a Type-Import-on-Demand Declaration import?

In Java, there are two valid forms of the import declaration: import java.lang.Math; import java.lang.Math.* ... its inner classes be imported? See Question&Answers more detail:os...

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

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296 views

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java - Ignore logging of duplicated exception messages of third party libs

I need to handle duplication of specific exeptions in my logs. I use slf4j and logback for logging in ... know already imlemented solutions? See Question&Answers more detail:os...

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

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220 views

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java - How to turn off a key listener in NetBeans wizard panels?

I developed a simple plugin for NetBeans IDE. I have a little problem with default key event on ... dialogs/org/openide/WizardDescriptor.html See Question&Answers more detail:os...

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

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365 views

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java - Trying to load image using ImageIO.read(class.getResource(URL)) but getResource is returning null

I've been making a 2D game with my buddy and I've been learning a lot about some basic game dev concepts ... >(SpriteSheet.java:8) Thanks again! See Question&Answers more detail:os...

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

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193 views

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java - Can't run Maven 3.6.3 on JDK7

According to the Maven release history, it should be possible to run any recent version of Maven (at the time of writing ... but I'm not sure). See Question&Answers more detail:os...

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

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260 views

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java - $PATH variable isn't inherited through getRuntime().exec

I'm trying to start a script by the following command in Java: proc = Runtime.getRuntime().exec(cmd, null, ... if null is passed as Environment? See Question&Answers more detail:os...

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

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346 views

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java - JPA save with multiple entities not rolling back when inside Spring @Transactional and rollback for Exception.class enabled

I have been at this for a good few hours and I can not find a way to get around what ... .t.s.TransactionSynchronizationManager : Removed value [org.springframework.jdbc.datasource...

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

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439 views

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java - Make sure to call FirebaseApp.initializeApp(Context) first

It might be really same with other questions already but I don't really know what's wrong in here. Thanks in ... Thanks in advance for the 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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216 views

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java - How can I switch between jpanels?

I'm still very new to java programming, so please help me to correct any mistakes I might have overlooked or give tips ... 25; } return val; } } See Question&Answers more detail:os...

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

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269 views

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java - SimpleDateFormat leniency leads to unexpected behavior

I have found that SimpleDateFormat::parse(String source)'s behavior is (unfortunatelly) defaultly set as lenient: ... this (not) happen? See Question&Answers more detail:os...

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

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177 views

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java - How to set timeout for task using ThreadPoolTaskExecutor

Is it possible to timeout a task when using ThreadPoolTaskExecutor? I cannot change the ThreadPoolTaskExecutor to ... or to ExecutorService. See Question&Answers more detail:os...

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

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462 views

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java - Spring JDBC is not logging SQL with log4j

I'm researching spring for a possible switch to a spring stack. One of the things that I thought was cool was ... jdbc: http://pastie.org/713189 See Question&Answers more detail:os...

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

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200 views

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java - How to run multiple kafka consumers on the same box independent of each other?

I have two Kafka consumer ConsumerA and ConsumerB. I want to run these two kafka consumers independent of each ... achieve the same features? See Question&Answers more detail:os...

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

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186 views

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java - NoSuchMethodError: org.hibernate.SessionFactory.getCurrentSession()

Hello all I'm getting this very strange error: java.lang.NoSuchMethodError: org.hibernate.SessionFactory ... sessionFactory.getCurrentSession(); See Question&Answers more detail:os...

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

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131 views

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java - send FCM to a particular version of your android app

how to send FCM (Firebase Cloud Message) to a particular version of your android app? for example:- my app's ... to devices having version 2.0. See Question&Answers more detail:os...

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

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