Does anyone know what should I do after I delete all java program( java SE and eclipse IDE for Java Developer ) and then reinstall them over and over again almost the whole day? But it still can't work when i tried to write Java.
It did successfully install jave when I typed javec at cmd, but then I found cmd show that
Java.lang.classnotfoundexception:version after I typed java version.
And then I open eclipse IDE for Java Developer, the error occurred as below:
An error has occurred. See the log file C:\eclipse\configuration\1528876404969.log
And it did change the number when I reopen it, such as 1528881289007.log
Already installed: jdk-10.0.1 and jre-10.0.1, and add the path at environment variables under window 10 64bits.
It would be appreciate for taking your time for answering my question.
Related
I can't figure out how to enable the linter (red error underline) whenever I use the code editor. So far I have tried enabling other Java linter extensions and re-installing vscode, but no luck. I am currently running v1.28, and my only extensions are the ones in the Java Extension pack.
Side Note:
I encountered is a popup saying "Java runtime could not be located", prompting me to install to install the jdk. I'm not very experienced with vscode and java so I am not sure if this is the error. If anyone has any potential solutions please let me know! Thanks.
You should install jdk on your os , and if you done before , set path in your environment variables.
Make sure the jvm works correctly on your os after installing with this command :
Java -version
Download jdk from here :
https://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
I work on a project using database. When i change some query change to get some values from the database NetBeans IDE gives me past coding changes result. But if i press the Clean and Build the project it is working fine. This consumes lot of my time.
How to fix this? Whenever i open NetBeans IDE it shows this dialog box
When i press "Yes" that opens the NetBeans IDE.
This started to happen after i changed the jdk version from 8 to 9. It seems NetBeans 8.1 does not work with jdk 9 so i again installed jdk 8.
After that install this message showing when i start NetBeans. I have no idea this is affect to above problem i have mentioned. So actually i have two problems.
i have installed jdk1.8.0_172 and i given environment variable correct path. but that is still same –
JAVA_HOME: C:\Program Files\Java\jdk1.8.0_172\bin
To solve invalid home specifieid error in netbeans follow below instructions
Go to C:\Program Files\NetBeans 8.0.2\etc
Open the file netbeans.conf then change netbeans_jdkhome to the path of your JDK, netbeans_jdkhome="C:\Program Files\Java\jdk1.8.0_172"
Make sure netbeans.conf run as administrator.
If you are not sure about the version of jdk, you can find it by typing in CMD java -version
I installed BlueJ today and I got the program able to load up however when I try to create/open a project the application doesn't do anything. Upon executing the command in terminal I found the error:
class Boot: tools.jar not found. Potential problem for execution. (Java home: /usr/lib/jvm/java-8-openjdk/jre)
I am not sure how to edit the Java home varaible. I have changed the /etc/environment file to contain:
JAVA_HOME="/usr/lib/jvm/java-8-jdk"
export JAVA_HOME
However that doesn't affect anything (I still get the same error message with the same path)
Manjaro 17.1.2
Linux 4.14.14-1-MANJARO
BlueJ 4.1.2-1
I had the same issue today. I run Arch Linux, which from my understanding Manjaro is pretty similar?
The problem I had was when I installed bluej I think I selected the Java 7 option when it gave me a choice between Java 7, 8, and 9.
I ran archlinux-java status to check which version I had selected on my system, and this was the result:
Available Java environments:
java-8-openjdk/jre (default)
So all I had to do was totally remove bluej (pacman -Rns bluej), and then reinstall and ensure I selected the 2) jdk8-openjdk option when given the choice. My bluej installation now creates and opens projects as expected.
Hopefully some of that information is useful, I must admit, I am pretty new to Linux, so don't really know what I am talking about. Just sharing my experience.
EDIT: I had the same problem on my other arch machine, and the issue was simply that I had the java-8-jde/jdk installed but for some reason that meant that bluej was looking in the jre for tools.jar I guess? So I installed java-8-openjdk and that solved my problem, bluej now works on this computer as well. I am yet unsure as to whether that will cause other Java issues on the system though, but I feel like it won't?
I accidentally closed eclipse when I was sending my application to run on my phone, and when I went to open it I got the following error:
Java was started but returned exit code= 15
C:\windows\system32\javaw.exe
Dogsi.requiredJavaVersion=1.6
I have tried restarting my computer but it didn't change this message. I have been using eclipse for a while, and have never seen this error before.
How can I resolve this error?
EDIT:
I ended up just reinstalling eclipse.
It sounds like eclipse didn't get a chance to save its configuration properly while quitting, and now the configuration is invalid when attempting to open.
Please see https://stackoverflow.com/questions/18059686/jdk-error-while-running-eclipse-on-windows-7 and Running Eclipse on Windows 7 JRE and JDK not found . Alternatively, just reinstall the jre and ecipse, but if you don't want to do that, then you're going to have to fiddle with eclipse configuration.
I hope this is more worded to be on topic because me not having the ability to code because of a java issue is off topic apparently.
When I try to run my project in eclipse. Eclipse just sais at the bottom with no stack trace. If I compile the jar file and run it with javaw it does nothing. If I run it with java it brings up the java(tm) platform has stopped working.
What I have tried:
Changing association of .jar to use java and javaw
tried uninstalling java and reinstalling
installing windows updates
restarting my computer
cleaned registry
running it in command prompt (just pulls up a window saying "Java(tm) platform se binary has stopped working." There is no stacktrace inside the prompt either.)
scanned for any malware/viruses
using the "fix and restore windows 8 option"
My system:
Windows 8 :/
java 7 latest 64 bit Update 13
java SE dev kit 7 Update 13 (was happening before I installed it)
16 gigs of ram
I can give you more info if need be.
Jars work on my other computer just fine.
edit: Still no luck. 8 out of 8 places I asked for help I got down voted. Looks like im not developing anymore.... Thanks.
Well, there is a known bug with this message, the workaround should be to disable d3d acceleration by adding this as a VM argument: -Dsun.java2d.d3d=false