All Questions
9,131 questions
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votes
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Displaying a JavaFX Popup on a Swing app in cross-platform manner
Before all of the commenters start saying "Just don't mix Swing and JavaFX", yeah I know, I know. It has caused us a lot of problems over the years but my team has a ton of swing code and we ...
- 996
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26
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Quickfixj and SSL connection : Received fatal alert: certificate_required
any suggestions would be appreciated, and I’m still a beginner.
I’m currently using the QuickFIX/J API for exchanging financial data. While trying to configure a new session using SSL connection, I ...
- 11
0
votes
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answers
35
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ThingsBoard Mobile Application
I want to make Mobile App for ThingsBoard.
I did all the steps from this: https://thingsboard.io/docs/mobile/getting-started/.
bole@Bole:~/flutter_thingsboard_app$ flutter doctor
Doctor summary (to ...
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0
answers
46
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how to determine the maximum possible java heap size [closed]
I see many posts on how to set the java heap size, but I can't seem to find anything about how to determine the maximum possible heap size. What is the best system tool for determing the free RAM at ...
- 87
2
votes
0
answers
70
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Overriding the default font in Look-and-Feel (Nimbus) prevents handling of non-Latin UTF-8 characters in Java Swing
I recently upgraded my desktop OS to Ubuntu 24.04 which has a new default font. I want to change this to another one as the new one is too condensed and doesn't seem to anti-alias properly in swing.
I ...
- 83
-3
votes
2
answers
83
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Java process ocassionally dies on Linux after few hrs execution: How do I root cause the reason?
A java process I launch on Linux, occasionally dies.
Its a large piece of Java code that we inherited (we did not write it).
We have access to source code.
I am able to monitor the process in Jconsole ...
- 1,218
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votes
0
answers
24
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Simulating keypress in java running in linux to change keyboard layout
I am writing a dictionary program with requires switching keyboard layout.
I have kde set up that ctrl-alt-k switches layout.
I have tried simulating the ctrl-alt-k keypress from the program but this ...
0
votes
1
answer
50
views
Spring boot application - Failed to determine a suitable driver class
My Spring Boot version is 3.4.1
While running from IDE (IntelliJ) everything looks fine.
Getting a below-mentioned error while trying to deploy the application on Linux :
org.springframework.beans....
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0
answers
22
views
OSGi based java process blocked when called using apache ant based exec task
I have build.xml trigger from Java application. it contains exec task similar to below to call osgi based Java service
<exec dir="${dir}" executable="${root}/rrb"
...
- 319
0
votes
0
answers
43
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Apache Directory Studio crashes when clicking 'Properties' on connection - SIGSEGV error in Java (Void Linux)
I am experiencing a crash with Apache Directory Studio when I try to right-click on a connection and select the 'Properties' option. The application immediately crashes with a fatal error. Below are ...
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votes
2
answers
67
views
Running a java application via a systemd service doesn't see additional directories (Rocky Linux)
I am trying to make a local machine restart to the new version control build of my java application. Let me run you through the flow:
.jar file is uploaded via ssh to a directory
a service is running ...
- 45
0
votes
0
answers
37
views
Match Mixer.Info of USB sound card to physical USB port it's connected to
I will potentially have several USB sound cards connected to a single Raspberry PI and I want to play be able to play sound on speciffic sound card identified by physical USB port it's connected to
I ...
- 7,011
0
votes
0
answers
94
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Why does my avro-tools.jar not recognize snappy-compressed avro files?
I have customer-supplied .avro files that use snappy compression, and I currently only have the avro-tools 1.11.3 jar file. When I try to do pretty much anything with these files, I get the following ...
- 95
0
votes
1
answer
92
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Where does Up Arrow work in Java Console?
I’m working on a program that uses java.io.Console.readLine to get input from the user, and to my surprise I noticed that on my Mac, it works to press Up Arrow to recall the previous command (like in ...
- 2,393
2
votes
2
answers
68
views
Apache commons-io get directory size - mismatch with du
I try to find out the size of a directory in Java. I check it by Linux bash.
POM
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
...
- 12.5k