Recent questions tagged java

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java - can I override a jsr-303 validation annotation

I have a test like below: public class TestSizeAnnotation { public static void main(String[] args) { System. ... still get the above behavior. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - What is the cause of an UnsatisfiedLinkError?

When i am trying to run my program it is giving the following error Exception in thread "main" java.lang. ... (javaSMSTest.java:18) please help See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Ukraine (Cyrillic) characters not displaying in Jasper Report PDF

I am trying to display ukranian character in jasper report as a pdf file. but it is not diaplaying in pdf ... csv..ukranian char is displaying. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How do you validate the format and values of EditTextPreference entered in Android 2.1?

Does anyone have sample code to validate user entered text in preferences? For example, I have a EditTextPreference ... code for this? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Passing custom objects between activities?

How do I pass custom objects between activites in android? I'm aware of bundles but I can't seem to see any ... show me a nice example of this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - How to close a jframe without closing the main program

I'm creating a program to keep track of a list of DVD's. On the main page I have set up 2 ... jButton3) .addComponent(jButton2) .addComponent(jButton4))) .addContainerGap()) )...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Reading a file over a network path

I have this weird issue, when I use File FileToRead = new File("\\MYSERVER\MYFOLDER\MYFOLDER\MYPICTURE.JPG") ... .setIcon(new ImageIcon(image)); See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Injecting a static EJB, nonsense?

I want to write this piece of code : @Stateless public class MyEjb { @EJB private static MyOtherEjbWhichIWantStatic ... into another EJB ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why do some people use the List base class to instantiate a new ArrayList?

I keep coming across code where people instantiate a new ArrayList and assign it to the List interface, ... reasoning behind this approach? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Hibernate on Oracle: mapping String property to CLOB column

WARNING: see my own answer below. The problem is caused by old Oracle drivers that were present on the classpath in ... java:2403) ... 45 more See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Javamail NTLM Authentication Failure

Trying to connect to Exchange server using NTLM in JavaMail. I can connect to SMTP, but not IMAP. I can also ... in the right direction or not. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Mock System class to get system properties

I have a folder path set in system variable through JVM arguments in Eclipse and I am trying to access it ... result. Any help is appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - SWT FileDialog: Selecting directories instead of files

Can I use the SWT FileDialog to select folders instead of files? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Why when year is less than 1884, it remove few milliseconds?

DateTime start = new DateTime().withYear(1884); System.out.println(start); System.out.println(start.minusYears(1)); ... 11 18:46:42 PST 1883 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Missing dependencies when generate-module-info jdeps

I`m trying to run jdeps with the following command: jdeps --module-path modules --generate-module-info out ... instead of manually add them. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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258 views

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java - Autoboxing: So I can write: Integer i = 0; instead of: Integer i = new Integer(0);

Autoboxing seems to come down to the fact that I can write: Integer i = 0; instead of: Integer i = new ... the idea? Why is this important? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - iText latest Maven dependency

What is the latest version of iText? And what is the maven dependency for that? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - OpenCV 3.0.0 FaceDetect Sample fails

I am trying to get OpenCV running i am using the following sample code I get the following Error line displayed: ... or how to debug this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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308 views

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java - SpringData : is it possible to have subqueries in the Query annotation?

I would like to know if it is possible to have subquery in a @Query annotation (org.springframework.data.jpa. ... by tmp.minDate") Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Inheriting static variable from abstract class

I have half a dozen classes which all extend the same abstract class. The abstract class has a static variable ... this be done in java? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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312 views

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java - Is it possible to specify which network interface for a JVM ( or IDE ) to use

The situation goes like this, I have two network interfaces in my macbook pro. One is a statically defined ... I would appreciate the help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Specify time zone of log4j's date

Is it possible to specify the time zone that log4j will use? I need the dates in the log file to be a ... the DateFormat to set the time zone. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - how to save panel as image in swing?

Hi i want to convert panel which contains components like label and buttons to image file. I have done the following ... .getMessage()); } } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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229 views

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java optimization nitpick: is it faster to cast something and let it throw exception than calling instanceof to check before cast?

Before anyone says anything I'm asking this out of curiosity only; I'm not planning to do any premature ... faster then an instanceof call? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Boxed Primitives and Equivalence

So I was asked this question today. Integer a = 3; Integer b = 2; Integer c = 5; Integer d = a ... the primitive value. Can anyone explain this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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181 views

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java - Is there an elegant way to deal with the Ace in Blackjack?

My kiddo had a homework assignment to write Blackjack in Java. I helped him a little but for the most part he ... , but maybe you can help. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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305 views

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java - IndexOutOfBoundsException when adding to ArrayList at index

I get exception Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 1, Size: 0 for the below code. ... = new ArrayList<>(10) See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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365 views

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java - getDeclaredMethod doesn't work, NoSuchMethodException

I've been trying to use Reflection in Java, but it doesn't end up pretty well. Here's my code: public class ... how I'm supposed to fix this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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