1,919,562 questions
0
votes
0
answers
4
views
Quartz scheduler performance tuning/overhead
I am new to Quartz Scheduler Framework. We are using quartz 2.3.2 for scheduling jobs. I have around million scheduled jobs, which has different frequencies. But mostly I get 6000-7000 triggers every ...
- 765
0
votes
0
answers
21
views
Can't reproduce virtual thread pinning (jdk 21), yet mysql not as parallel as should be
The jdk 21 doc about virtual threads (hereafter "VT")
(https://docs.oracle.com/en/java/javase/21/core/virtual-threads.html)
is pretty clear about a synchronized block causing a thread to be ...
- 1,948
0
votes
0
answers
6
views
How do you change the clickable region around a label in Java FX?
In Java FX, you can change the padding around a label with CSS. In doing so with negative values, you can remove some space between the border of the label and the text inside it, like the images ...
1
vote
0
answers
18
views
Connection between Mockito spy object and original object
In short, somehow a mockito spy object got mixed up with original object.
Here is the class definition (pseudo code)
public class MyClass {
private String m_name = "origin name";
...
- 11
0
votes
0
answers
11
views
Aeron ConcurrentPublication vs ExclusivePublication. Is this managing concurrency at the Object level, or at the LogBuffer level?
In Java Aeron, at the Object level, I understand that if I have multiple threads writing to a single Publication instance, it had better be a ConcurrentPublication. But what if each thread has its own ...
- 1
-4
votes
1
answer
38
views
Spring Boot java: cannot find symbol
i am in new learner
Can someone help me .. i followed this tutorial but still I am getting the error.
i followed the each step gave the same file names , variables still the same. what mistake I am ...
- 939
-1
votes
0
answers
24
views
How to include multiple classifiers in a WAR?
I have a situation where I need to download all the classifiers in a GAV as part of my WAR bundle.
However, when I add the dependencies they don't show up in the final build product. You'll notice ...
- 5,626
1
vote
1
answer
10
views
james not adding the dkim header
i have been trying to setup James email server from Apache today and my problem with it has been that it refuses to add the dkim headers to my emails although i thought that i have configured for it.
...
- 11
1
vote
1
answer
25
views
How to configure maven with fallback repository
My situation:
I basically need clientside implementation Artifactory virtual repos.
We are being forced to use GitLab (self-hosted) for package management for each project, and an entirely different ...
- 5,626
0
votes
0
answers
12
views
Cloudinary asking for env variable I provided: A Cloudinary Cloud name is required, please make sure NEXT_PUBLIC_CLOUDINARY_CLOUD_NAME is set
I've uploaded my nextjs app to vercel, cloudinary doesn't seem to throw any errors at me and is storing my images just and I can display them on the app just fine.
When I push my commit to github/...
-3
votes
0
answers
19
views
Flutter Error: JAVA_HOME is set to an invalid directory despite correct configuration
Flutter Error: JAVA_HOME is set to an invalid directory despite correct configuration
I'm facing an issue while running my Flutter project where I keep encountering the error: "JAVA_HOME is set ...
- 18
-1
votes
0
answers
12
views
how can I create a delay for text to disappear after showing up? processing java [duplicate]
void drawMessage() {
textAlign(CENTER, CENTER);
textSize(64);
fill(255); // White for "Pokemon"
text("Pokemon", width / 2, height / 2 - 40);
fill(color(255, 165, 0)); // ...
0
votes
0
answers
28
views
How to properly add multiple canvas into a PDF?
I wrote a Java program with iText 9.0.0 to create a PDF file. I need to add external PDFs as XObjects to every page of a PDF. Everything goes fine if the number of the PDF pages is 1 or 2. However, if ...
- 23
0
votes
0
answers
19
views
<nulltype> cannot be represented as a Class<?> SDK 35 in Android
I was using compile 34 as the target SDK in my project and it gave me a warning that I should now make it 35. So I made the compile SDK 35 and then when I did the rebuild it gave me an error like this....
0
votes
0
answers
25
views
Java Runtime.getRuntime().exec is frozen and only continues running when the starting program is closed [duplicate]
I have a problem with a Java application (program1) starting another Java application (program2).
If program2.jar has to process a large amount of data, the program2 freezes and only continues running ...
- 89
0
votes
0
answers
12
views
How to disable android studio code box showing on scroll [duplicate]
https://i.sstatic.net/65Jg9j5B.jpg
How can I disable this feature of android studio in It's editor. I'm beginner in using android studio and this feature of android studio is getting on my nerves. I ...
2
votes
1
answer
33
views
How to get terminal background color in Jansi?
Could anyone say how to get terminal background color using Jansi, if it is possible. I need it because it is difficult/impossible to provide good contrast if you don't know background color. There is ...
- 161
1
vote
4
answers
90
views
Using equals to compare map values returns false even when values and insertion order are the same
I have two Map objects: one HashMap and one LinkedHashMap. Both contain the same values (e.g., [1, 2]), and for the LinkedHashMap, the insertion order is preserved. However, when I compare the ...
- 53
1
vote
0
answers
16
views
Manually run Flyway migration using gradle flyway plugin in Micronaut
I am trying to run flyway migration manually instead of running when the application start, using the following reference - https://documentation.red-gate.com/fd/gradle-task-184127407.html
In the ...
- 16.9k
-3
votes
0
answers
18
views
repeate subreport horizontaly in jasper java
I have this java class
your text
public class Product {
private String productName;
private List<Category> categories;
}
Requirement is to display productname on top then list categories ...
0
votes
0
answers
15
views
How to send Push Notifications from Android to Raspberry Pi
So I have connected my Raspberry Pi to my Android phone without the need of any passkey and no interacation in terms of the Raspberry Pi, because the Pi will be headless (not able to be changed). So ...
- 89
0
votes
2
answers
75
views
JDBC Connectivity issue (jar file) [duplicate]
Java code not working despite adding JAR file to referenced libraries.
I'm trying to connect to a MySQL database using Java, but my code isn't working despite adding the MySQL Connector/J JAR file to ...
-2
votes
0
answers
16
views
java.lang.UnsatisfiedLinkError: no otmcjni in java.library.path while connecting DigitalPersona fingerprint device
java.lang.UnsatisfiedLinkError: no otmcjni in java.library.path
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System....
- 7
-3
votes
0
answers
44
views
ant build fails with eclipse but succeeds directly
I am facing below issue while trying build using ANT in eclispse
Apache Ant(TM) version 1.10.15 compiled on August 25 2024
Setting ro project property: ant.file -> C:\Install\eclipse-workspace\pf-...
- 95
-2
votes
0
answers
40
views
Accessing "csv" file [duplicate]
I'm trying to read a "CSV" file but I'm facing severall problems. The first one is I can't only select "csv" files with the file system. I try to do it this way :
private final ...
- 1,804
1
vote
0
answers
17
views
A failure occurred while executing com.android.build.gradle.internal.res.ResourceCompilerRunnable Resource compilation failed
Helo,
I'm trying to compile my app in Android Studio, but when i press the play button I get the following error:
Execution failed for task ':app:mergeDebugResources'.
A failure occurred while ...
- 35
0
votes
0
answers
18
views
All possible Introduction advise exhausted and no implementation found for method: HttpResponse post(TagRequest arg0)
I have the below interface as the common Http action for GET, PUT, POST and DELETE
@Validated
@ExecuteOn(TaskExecutors.BLOCKING)
public interface IHttpAction<T, R> {
@Get(value = "/{?...
- 16.9k
1
vote
0
answers
15
views
VSC gradle environment variables
Do you know why environment variables doesn't work with Gradle for java extension ? There is no way to set them in e.g. launch.json or settings.json files. Gradle Version: 8.10.2. VSC Version: 1.96.0 (...
0
votes
0
answers
48
views
JavaFX Button set to disable on click causes StackOverflowError
I have a ComboBox in which I store a list of labels and I've added an extra row in which i allow the user to write their own label and add it to the list.
Described combobox with the edition row on ...
- 1
0
votes
0
answers
22
views
Micronaut declarative HTTP client not working for the HTTP verbs
I have the below interface as the common Http action for GET, PUT, POST and DELETE
@Validated
@ExecuteOn(TaskExecutors.BLOCKING)
public interface IHttpAction<T, R> {
@Get(value = "/{?...
- 16.9k
1
vote
0
answers
37
views
How to make Windows (Screen) Magnifier follow text as it is being typed?
My eyesite is getting a lot worse, so I am using Window Magnifier (on Windows 11) to make things easier to read on my computer screen. Using my keyboard, I simply press the Windows button and (+) or (-...
- 1,437
0
votes
0
answers
20
views
Bluetooth connection issue when pairing Android app with Raspberry Pi
I'm working on an Android app that pairs with a Raspberry Pi-based Bluetooth device using the Bluetooth serial connection. I'm attempting to send notifications to the device once it's paired, but I am ...
- 89
3
votes
1
answer
123
views
Can Virtual Threads improve querying a database in Java?
I wanted to try power of virtual threads in Java in a simple application which consists of many tasks. Each task executes a query agains a database which takes around 10 seconds.
My expectation was ...
- 199
-4
votes
2
answers
108
views
Why java.util.Date object does not update itself at runtime? [duplicate]
I need to save the date while program is running but the date object does not update itself at runtime how can I update date object.
public static void main(String[] args) {
try {
Scanner ...
-4
votes
0
answers
31
views
Unable to deploy spring boot 3.x to weblogic 14.1.1
I'm trying to deploy Spring Boot 3.x on WebLogic 14.1.1 then it's throwing an error as shown in the screenshot below. But when I downgraded Spring version to 2.x, the deployment works as expected. ...
0
votes
0
answers
50
views
Swing JButton text encoding
I was playing around with Swing, and faced following problem with text encoding with JButton class
So would be grateful for explanation or some links explaining why this code display broken text - 'Р'...
- 19
0
votes
0
answers
91
views
When are the coder and value set when I give a string constant in my java code, for example "ë" or "π"? [closed]
When I have a string constant in a java program, for example "ë", I see in the debugger that the coder=latin1 and the value is the byte -21. When I have the string "π", I see that ...
- 2,291
-3
votes
0
answers
53
views
How to Dynamically update UI in javaFX? [closed]
I am sorry if this is a dumb question it is my first time using javafx i am trying to learn. I am making a JavaFX project that involves updating the contents of a pane by clicking an item. The way it ...
1
vote
2
answers
49
views
Z-Order problem while displaying isometric tiles
I have a little problem while displaying isometric tiles in my school game.
The fact is that I suppose everything is ok with my code...
Here is how it's organised:
architecture: MVC + ECS
everything ...
- 21
0
votes
0
answers
26
views
org.junit.jupiter.api.extension.ParameterResolutionException: Weld has failed to resolve test parameter [int arg0] in method
Issue with JUnit 5.9.1 @ParameterizedTest and Weld (JDK 17)
Hello,
I am using JUnit 5.9.1 for testing with JDK 17, and when I try to run a test with @ParameterizedTest, I encounter the following error:...
- 33
1
vote
2
answers
83
views
Print a sequence of numbers adding one number each time
I need to write a programm that, when inserted a number, it print a sequence of numbers from 1 to that number, in separate lines adding a number each time.
Example: if you insert 8, it print
1
1 2
1 2 ...
0
votes
0
answers
17
views
JNI Issue: Passing Java Runnable Object to JNI in Custom Gluon Attach Plugin
I am developing a custom Gluon Attach plugin and encountering issues with passing a Java Runnable object from Java to JNI. Despite reviewing the Gluon Attach plugin source code (which unfortunately ...
1
vote
0
answers
36
views
What arrows to use in component diagrams to show relations between JPMS layers?
JPMS supports multiple layers. For example boot layer and its two child layers.
And I need to show these layers on UML diagram. For this I selected component diagram where every layer is a component. ...
- 161
0
votes
0
answers
42
views
I can't find openjdk-21-jdk package in Debian disto [closed]
E: Unable to locate package openjdk-21-jdk
mkaksoy@MehmetKaanAksoy ~ % sudo apt install openjdk-21-jdk
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
...
1
vote
0
answers
37
views
Looking for a Memory-Efficient Alternative to Awaitility for Handling Asynchronous Tasks in Tests
I frequently use Awaitility in my tests to handle asynchronous operations. However, each Awaitility call spawns threads, which results in high memory consumption when running large tests. I’m ...
- 11.6k
0
votes
0
answers
39
views
Augmenting the calendar widget in ZK Studio 5.0
In an acquired RESTful Spring Boot Web application, there are some restrictions I currently cannot change. The code partly uses Java 1.6, the rest is Java 17. And the ZK Studio has the version 5.0 and ...
- 1,162
0
votes
0
answers
16
views
Export Eclipse Scout table rows as a CSV file and let user download the file
I would like to export the rows (all rows, as well as just filtered rows) of an Eclipse Scout table as a CSV file. And after creation of this file, I would like the user to be able to download it.
I ...
- 100
-2
votes
0
answers
27
views
I am currently creating a JSF application. I have completed the authentication, but when I log in, it says "undefined" [closed]
I have added two classes: one (connectDB) that helps me connect to the database, and another (User) that sends requests to the database, along with the file with the .xhtml extension.
I was hoping ...
0
votes
0
answers
37
views
How to embed plugins from classpath to elasticsearch node [closed]
I am trying to upgrade the elastic search from 7.10.2 to 8.9.2 in the app and facing an issue while embedding the plugins from the classpath. I was using like
class NodeWithPlugins(settings: Settings, ...
- 55
0
votes
0
answers
11
views
android Task :app:connectedDebugAndroidTest fails with error : caused by: org.bouncycastle.openssl.PEMException: malformed sequence in RSA private key
i'm trying to run basic instrumented test on my android app , to test room database , when i lunch the test , the task
:app:connectedDebugAndroidTest
always fails and throws the following error
...
- 504