Questions tagged [java]
Widely-used object-oriented programming language, emphasizing portability. Questions about programming with Java are off topic and should be asked on stackoverflow.com.
2,376
questions
3
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3
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Freemind on Windows: EXE wrapper not recognizing OpenJDK
I am trying to run Freemind 1.0.1 on a Windows 10 machine with OpenJDK. When I try to launch it from the Start menu or try to open a .mm file in File Explorer, I get an error message saying
This ...
1
vote
2
answers
5k
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FFMPEG : create a looping video with specific time
I'm trying to convert a GIF file into video and merge the output video with an audio file, so the final result will be a video + audio.
public static String makeVideo(String inputGifPath, String ...
4
votes
2
answers
5k
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Android Studio 4.1 Stuck at loading screen in Mac
My Android Studio has been stuck at loading screen since yesterday. X_X
What I have tried:
Restarting computer.
Clearing junk files and logs.
Completely uninstall and then Reinstalling AndroidStudio....
0
votes
1
answer
381
views
How to tell VS Code where Java is installed?
I have installed an extension that requires Java (the Veracode Greenlight extension). Now every time I open VS Code, it shows me a prompt that reads:
To use the "java" command-line tool you ...
0
votes
1
answer
218
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How to include java inside an application setup
I have created a java application. I have used Launch4J to create exe and InnoSetup to create the setup file for windows. Whenever I'm running my application on other system which has no java(pre-...
0
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0
answers
46
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Cannot execute downloaded file from script
I downloaded a jdk7 tarball to test parity with some old software during an upgrade. When I unpacked it I of course got a bunch of quarantined files. After not finding a way to remove the quarantine ...
0
votes
1
answer
1k
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VLC gets java headless error on Blu-ray discs
I have been using VLC for a long time, watching Blu-rays but unable to access the menus due to a "Java not found" type of error. My environment is Fedora 32, x64
I installed the library ...
0
votes
2
answers
224
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Why is Windows running low on memory and crashing all my applications?
I have to be quick in writing this because my web browsers keep crashing on me with memory error codes! I can't even install Java because the installer throws some kind of memory error as well. I took ...
0
votes
1
answer
1k
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CPU spikes up to more than 1000% of java when building in android studio. Mac shuts down while this happens
It's been 2 weeks now and I have been trying to find the root cause of this.
Configuration: 16GB - 256GB - 15 inch Macbook Pro 2019, 2.4 GHz with 8-Core Intel Core i9 - macOS Catalina - Android Studio ...
0
votes
1
answer
171
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linux - issues running java applications / issues launching flashtool
i'm trying to use the unzipped http://www.flashtool.net/downloads.php folder for rooting phones,
but when I sudo ~/FlashTool/FlashTool &
the console outputs
Error: dl failure on line 604
Error: ...
0
votes
0
answers
738
views
Java application run from task scheduler stops working every second hour
Currently there is no way i can set up the the java application as a Windows Service, so i have a Task scheduler set up, with the following settings.
General - Run whether user is logged in or not
...
0
votes
1
answer
2k
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How to use sudo update-alternative for java installation on Ubuntu 18.04?
I am trying to install Oracle JDK on ubuntu 18.04.
I am using the command sudo update-alternatives --install /usr/bin/java java /usr/lib/jvm/jdk-14.0.2/bin/java 1 but this command does nothing. But it ...
1
vote
1
answer
1k
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How to use vscode-java v0.65.0 with older java jdk<11 (64bit) or with any compatible jdk at all (32bit)?
32bit and 64bit
This question is tailored for those who do some research on how to use an older java than java 11 (e.g., Java 8) on vscode-java, thus for those who do not run into the error of
"...
0
votes
1
answer
78
views
mapping two case classes in scala on Lagom
I am a beginner with scala/Lagom, can someone help me with the following issue :
I am trying to creat an Api for fields of products, in order to do that : I need to map case classes extending to a ...
1
vote
0
answers
39
views
Estimated size izpack
I would like to display the size of my application(I use to create the installer izpack) in Control Panel > Programs and Features:
The solution I found is to set the estimated size statically in ...
2
votes
1
answer
4k
views
How to remove the 'PS' message that appears in the terminal after running code in VS Code
I am currently taking Java lessons and I am using VSCode. I wrote this code:
class Simple{
public static void main(String args[]){
System.out.println("Hello World!");
} }...
0
votes
1
answer
1k
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64-bit Java not working
I have been trying java -d64, but get Error: This Java instances does not support a 64-bit JVM. Please install the desired version.
I know I installed the 64-bit version, and when I go to Control ...
0
votes
1
answer
194
views
Is it possible to read off CMD without user input?
I was wondering if there was any way to read straight off CMD on windows without having inputs from a user using Java.
I'm running a Minecraft server and want to create certain types of automatic ...
1
vote
2
answers
945
views
difficulty running some old java applets, I have java 8 and appletviewer
I am trying to run some old java applets from the old book "Algorithms and Data Structures In Java" by Robert LaFore.
https://sites.fas.harvard.edu/~cscie119/resources/lafore/
or
https://cs....
0
votes
0
answers
35
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Java dependency
I was hoping someone could help out with this.
Last night I got an update notification on my computer advising that there was a newer version of Java available, when I selected to update it, I was ...
0
votes
0
answers
332
views
FileSystemWatcher does not hear events when application changes files
I have a Powershell Core script that uses FileSystemWatcher to listen for changes in a directory recursively. It behaves as expected when a user uses Windows Explorer or a shell to add or modify a ...
1
vote
1
answer
2k
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IntelliJ IDEA or Pycharm not opening on Alpine Linux
So I am trying to migrate to Alpine Linux; however, I cannot seem to install two IDEs, Pycharm and IntelliJ IDEA.
They are both throwing me the same error whenever I attempt to run either pycharm.sh ...
1
vote
1
answer
2k
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AuthorityKeyIdentifier missing from keypair generated with java keytool
Background: I'm trying to set up a QA/test environment for a system comprising (1) a web application configured for HTTPS connections, and (2) a Python-based client application running on a mobile ...
1
vote
1
answer
668
views
Specific user can't run Spring Boot application on port 443, but root can do it
I can't run a Spring Boot application on CentOS under a specific user on the port 443 (or 433 it doesn't matter).
Caused by: java.net.SocketException: Permission denied
Root can do it. When I tried ...
1
vote
0
answers
755
views
STS (Spring Tool Suite) doesn't autocomplete method parameters if they're instantiated using "var"
I'm currently using STS 4.6.1.RELEASE and JDK 11.0.7 with Content Assist enabled.
I can reference attributes with var, e.g. in the code var customer = new Customer(); I can begin typing "cus..." and ...
0
votes
0
answers
164
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Software asking for obsolete version of Java (6) on macOS 10.15
I have a friend that is trying to run the following software (cmap) https://cmap.ihmc.us/cmaptools/cmaptools-download/
She gets prompted to install Java SE 6 to run the software. She last used it in ...
2
votes
1
answer
4k
views
Minecraft server RAM allocation not working as expected
I am hosting via Strato V server a modded Minecraft server 1.12.2. I allocated about 8 to 10 GB to JVM but when I check with htop it says that only about 4.2 GB RAM are used for the whole system.
I ...
0
votes
1
answer
2k
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JDK 11 windows installation Error: opening registry key 'Software\JavaSoft\Java Runtime Environment'
After installation of JDK 11 and setting of the path in environment variable
In a command prompt > java -version returns:
Error: opening registry key 'Software\JavaSoft\Java Runtime Environment'
...
1
vote
1
answer
651
views
I've been trying to open a jar file but every time I do so It tells this jar file could not be launched
java version "1.6.0_65"
Java(TM) SE Runtime Environment (build 1.6.0_65-b14-466.1-11M4716)
Java HotSpot(TM) 64-Bit Server VM (build 20.65-b04-466.1, mixed mode)
Joses-iMac-5:~ luissoto$ java -jar/...
1
vote
0
answers
247
views
Why can't my threads fork?
I recently started renting a VPS, it's running Ubuntu Server 18.04.4 LTS on 8GB of RAM. I only ever used it to run a small (SpigotMC) Minecraft server. When the JRE for the server is not running all ...
0
votes
1
answer
316
views
Keytool -import ssl certificate from personal CA on jboss 4.0.5 server
What i am trying to do for a few days already, and it drives me crazy, is to make a java website based on jboss 4.0.5 server to use ssl certificate(https). For this I'm following these instructions:
...
7
votes
3
answers
6k
views
Upgrading to macOS 10.15.4 causes “jdk-11.0.2.jdk” developer cannot be verified error
I recently upgraded my laptop to macOS 10.15.4 and now Java will not run from the command line (or anywhere else from what I can tell) I just see this error message:
“jdk-11.0.2.jdk” cannot be ...
0
votes
1
answer
916
views
Displaying UDP Multicast Rawvideo Stream
I have a problem while trying to capture the raw video over UDP.
In my setup, I stream the webcam with FFmpeg (command line) via UDP, on the client side I use Java OpenCV, the capture line; ...
0
votes
1
answer
1k
views
Result from 'java -version' does not show in list of programs on Windows 10
Recently I have been having some issues with dependencies in a Java project that I was making. A suggested solution was to use Java 8 and not Java 11. For some reason, I cannot revert back to Java 8 ...
0
votes
1
answer
1k
views
Running Java process from Systemd with classpath
I have the following service:
[Unit]
Description=App
After=network.target
[Service]
Type=simple
User=root
WorkingDirectory=/opt/app
ExecStart=/usr/bin/java -server /opt/app/start.ini
Restart=on-...
0
votes
1
answer
2k
views
Netbeans Author Tag?
I'm using Netbeans 11, and when I create a new Javadoc tag, my default name appears in the form of:
/**
@author Sarah <GENERIC_EMAIL_HERE>
**/
public class X {}
How can I change these default ...
1
vote
1
answer
1k
views
How can I get "Ctrl+Shift+Right/Left" to select/mark a word in Eclipse?
I'm using Eclipse 2019-12 (Java) on Windows 10 and I cannot get Ctrl+Shift+→ to select/mark a word as it do in every other program I use. The same is true for Ctrl+Shift+←...
The General -> Keys ...
0
votes
1
answer
383
views
how to change download sources used for building netbeans-apache?
I have followed this guide from netbeans: build from source
Unfortunately on running ant build, as it tries to download from maven central repository it uses an url that seems outdated, the new url ...
1
vote
1
answer
5k
views
Does ECHO %PATH% show the path in the wrong order in Windows?
I'm currently fighting with my IDE and usage of PATH, JAVE_HOME, etc. on Windows 7.
As stated in this question: PATH variable showing different values (command prompt vs environment variables dialog ...
0
votes
1
answer
424
views
How do I run a War File in confined SELinux domain on CentOS7?
I am currently working on the deployment of my Java Web Application. This application is available to me as a WAR file. My goal is that the application starts with a limited SELinux startup. This ...
0
votes
1
answer
197
views
tomcat with does start with SSL arguments for JMX
I have Tomcat 8.0.23 (I know, should be upgraded) running on CentOS and I need to set up JMX with authentication and SSL. I am able to connect with SSL and with password through SSL tunnel from my ...
0
votes
0
answers
53
views
How to update existing curly brace positions in IntelliJ IDEA? [duplicate]
I've been given Java code by others which use curly braces on new lines, and I'd like them on the same line after I import the file without having to change them line-by-line?
How do I do it?
...
0
votes
1
answer
2k
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How do I run Java from a usb key by using JPortable and its launcher?
I downloaded both the Java runtime environment and the JPortable launcher from PortableApps.com in order to run Java and edit projects by launching the IDE from my USB key without the need of ...
0
votes
1
answer
193
views
How do I uninstall Java7 from macOs
After April 2015, Oracle will no longer post updates of Java SE 7 to its public download sites. I am inclined to remove Java 1.7 and the JDK permanently from my Mac, if only I knew how to accomplish ...
2
votes
1
answer
225
views
Bat file allowing for java updates with in the path
I have bat file that currently contains
"C:\Program Files (x86)\Java\jre1.8.0_231\bin\java.exe" -jar
This issue is ever time the VM gets updated with new version of Java the bat file fails
See ...
3
votes
1
answer
24k
views
Java JDK, version of compiler is not compatible with Java runtime
I tried to compile a simple Hello world called with javac, but when I use the command 'java Hello', the JVM seems unable to read the bytecode.
Output of 'java Hello':
Error: A JNI error has ...
0
votes
1
answer
336
views
WIN10 Environment path variables not recognized when opening terminal from background context
I installed Java RE and Git, for example, and made sure their binaries were added to Environment Path Variables under both User and System variables. When I launch a command prompt from the taskbar, ...
0
votes
1
answer
950
views
Why do WinRAR and 7-Zip see different files when opening the same compressed file?
Example file jdk-7u67-windows-x64.exe is ~129MB (Oracle account is needed to download)
When using WinRAR, it shows the total is 29,170,176B: jre.msi (~27.7MB) jre1041.MST jre2052.MST
However, ...
0
votes
0
answers
166
views
What JREs are available for end-users after Java SE 8 on Windows?
Historically it's always been possible to obtain the JRE from Sun and then Oracle. But ever since Java SE 9, Oracle has only provided updates for version 8.
When I build a program on a later JDK in ...
0
votes
1
answer
4k
views
How to specify JRE path for dbeaver on MacOS
I'm trying to setup dbeaver with prestosql driver on MacOS, and it shows me the following error
unable to find valid certification path to requested target
I think it's because dbeaver is using a ...