Questions tagged [java]
Java is a high-level object-oriented programming language. Use this tag when you're having problems using or understanding the language itself. This tag is frequently used alongside other tags for libraries and/or frameworks used by Java developers.
158
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Flink GlobalWindow Trigger only process the trigger event
I have datastream keyby by an event property, that is then passed to a globalwindow, trigged when a specific event comes in, the issue is that when the window is trigged to process the events, it only ...
- 1
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12
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Spring RestTemplate - How to remove `client_secret` from the logs?
My backend application currently leaks client_secret inside my log file. I would like to keep the log level of DEBUG except for the RestTemplate where I don't want this line to be executed.
The log ...
- 766
-1
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11
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Using a Bean method result in a static context
I've got a class:
public class SomeBean {
public String getSomeValue() {
return "result";
}
}
I am using this class as a bean:
@Configuration
public class ...
- 165
-7
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answers
34
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EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ff8ed191184, pid=51412, tid=0x0000000000009a34 [closed]
I am writing protection for the maincraft cheat in the form of a native and when I added lazy importer I started having such errors
# A fatal error has been detected by the Java Runtime Environment:
#
...
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13
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How to Automate Adding Global Libraries in IntelliJ Idea
I'm working on client's Java 8 application in IntelliJ IDEA that requires adding / re-adding two JAR files as Global Libraries to every component in the project after every code change. (Yes, this is ...
- 1,548
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0
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7
views
How to display image from USB camera on old android?
Short question: I'm making an app for android 4.2.2, to display image from USB camera on tablet. The picture is not displayed. Can you please explain why? Thanks!
(below is a link to the source code)
...
- 51
0
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0
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10
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Can't download files content-disposition inline with a POST request from my app after activating CORS on a spring boot 3 application on Chrome/Edge
I'm currently working on a java spring boot (3.2) application with Spring MVC and secured with Spring security.
I wanted to add a CORS configuration on my app but this add a bug on downloading files ...
- 272
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21
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Memory issues after upgrade to Spring boot 3, Java 17
We recently upgraded our application from Spring boot 2.2, Java 11 to Spring boot 3.2 Java 17. After the upgrade we observed that the memory progressively increases and then goes down to zero and it ...
- 55
1
vote
1
answer
9
views
OpenCV ArUco marker detection in Java does not work
I was working on a project where I have to detect ArUco markers in the images captured by the webcam. I was following the documentation until I found out that Java implementation of OpenCV ArUco ...
- 11
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10
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PanacheEntity record update works only once
I am learning qurkus and I have a problem that I can't update a record in the db more than once.
I use merge() to update my records:
@WithTransaction
public Uni<User> update(User user) {
...
- 1
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0
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14
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Java orc-tools-2.0.1 can't use this version
I saw new version of hadoop and orc-tools libraries, so I decided to update my project.
There are my new libraries:
implementation group: 'org.apache.hadoop', name: 'hadoop-hdfs', version: '3.4.0'
...
- 1
0
votes
0
answers
11
views
Validation Problem For Request Class in Spring
In the application, I have an entity class named "Car" and a request class named "AddCarRequest" from which I will get information about that class via user input.
@RequestMapping(&...
- 1
0
votes
2
answers
17
views
Spring controller and processing of parameter string as an array of strings
I encountered this problem. I have a simple spring REST controller that has a get method, it should process a request like this http://localhost:8080/test/get?params=["param1", "param2&...
- 1
0
votes
1
answer
26
views
Make RGB java.awt.Color lighter
Can I take a java.awt.Color, turn it into a HSL color, and make it a notch lighter or darker — that is, increase or decrease the L value by, say ten points (obviously, within the 0 to 100 range)?
If ...
- 1
-2
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0
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16
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* What went wrong: Value 'C:Program FilesJavajdk-17.0.12' given for org.gradle.java.home Gradle property is invalid (Java home supplied is invalid)
What platform(s) does this occur on?
Android
Where did you reproduce the issue?
in a development build
Summary
I'm facing an issue creating an Android development build using EXPO. After updating ...
- 1
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10
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Android, Java + Goople Map: Straight routes useless. Is it possible to eliminate them?
Video of problem
Straight routes useless. Is it possible to eliminate them? there are straight lines that i wouldn't want.
Input from rest_api it's a simple json in this link:
https://drive.google.com/...
-3
votes
0
answers
10
views
Basic auth to get token in spring security oauth2
So i have migrated my token service from spring 2.4.5 to 3.2.3, there are many changes in spring security, i'm refactored my SecurityConfiguration, UserDetailsService etc, but i have a problem with ...
- 7
0
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0
answers
7
views
Question: How to Create a Custom WireGuard Client App Using Java in Android Studio?
I am trying to create a custom WireGuard client app using Java in Android Studio. I'm using the com.wireguard.android:tunnel library available on Maven Central. Here are the steps I've followed so far:...
0
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0
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23
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Is there a way to change the Java SDK depending on the git branch on Intellij IDEA?
Im new to Intellij IDEA. On my git project I use branches for different version (minecraft modding) and for example version1 is using JDK 17 and the second one JDK21.
When I switch between branches I ...
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-1
votes
1
answer
9
views
How to action update expression
I'm using the AWS Java SDK v2 with UpdateExpression so that I can update an item without having to retrieve the item from DynamoDB.
I've managed to build the update expression but now I don't know how ...
- 983
-1
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0
answers
20
views
Are RMap `getMap`, `putAll`, `put`, `remove` operations atomic & threadsafe?
We are using Redisson library for Redis and we are utilizing Hash data structure to store an object with different properties.
We have 2 Kafka listeners, which listen for incoming messages, and store ...
- 788
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23
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How to catch the PSQLException exception?
How to catch the **PSQLException ** exception? I am using Spring boot JDBCTemplate and it can throw a PSQLException exception. Using try-catch, I get this message from IDEA: "Exception 'org....
- 1
-2
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0
answers
9
views
How to get Last element in the redis elasticache if the highest score is not known? Also, how to get limited number of elements in a particular range?
I am trying to get the element with highest score in redis elasticache.
some documentation states that, this can be done by using 2 methods-
jedis.zrangeByScoreWithScores(key, min, max);
jedis....
- 77
0
votes
1
answer
33
views
Best Practices for Validation in a Spring Boot Application [closed]
In my Spring Boot application, I have encountered a scenario where multiple services interact with each other, and objects passed between them need to be validated. Currently, I am using @Valid in the ...
- 368
0
votes
0
answers
18
views
excelWB.write(fileOut); gives IllegalArgumentException
I am trying to use an excel to write the into new file using Apache POI. This is the method code,
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import ...
- 1,988
-1
votes
0
answers
9
views
Apache Camel OnException JUnit5 Test
I have this Camel Route and would like to test it.
from("jms:queue:importer.messageImport")
.routeId("Import")
.onException(Exception.class)
.maximumRedeliveries(0)
...
- 1,009
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0
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9
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Bean Could not be found despite proper project file structure
File Structure screenshot
I've seen other posts solving this issue with this exact file structure yet no matter what I do it always gives me this error:
***************************
APPLICATION FAILED ...
-2
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0
answers
13
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Issues with Configuring Region in S3AsyncClient using Minio with AWS SDK for Java
I encountered an issue while configuring S3AsyncClient using the AWS SDK for Java in a Spring Boot application. Despite setting all the necessary properties, I keep receiving the following error ...
- 35
1
vote
1
answer
40
views
Java libraries built from source have differences to those published wrt to anonymous classes
I am trying to build groovy (and others) from source using the instructions in their help file.
https://github.com/apache/groovy/tree/GROOVY_3_0_21?tab=readme-ov-file
The built binaries operate just ...
- 163
-3
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0
answers
34
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How to avoid NullPointerException for `ResponseEntity.getBody()` in Spring RestTemplate? [closed]
Heading
I'm working on a Java Spring application and facing an issue with ResponseEntity.getBody() potentially being null, which leads to a NullPointerException. Here is the relevant part of my code:
...
