I have JDK 10 and eclipse Photon installed on my windows 10 system.
Both of them are working fine and eclipse is very well compiling my Java apps and running them as well.
But when I roll-over my cursor on syntax, then it is not showing its description.
It says :
This element has no attached source and the Javadoc could not be found in the attached Javadoc.
for every element. I could not find anything useful on the google and also the similar post from StackOverFlow is old about jdk 7.
Now, since the jdk folder doesnt have JRE anymore, the eclipse is linked to the jre folder outside the jdk. However, I tried all jars in lib of jdk and still no luck.
What is the problem?
Related
I run the windows 10 64 bit version of Eclipse. The first time I log onto Eclipse it works just fine (though I haven't fun any code yet, so I'm not sure if that works) but upon closing and reopening Eclipse it says, "Version 1.8.0_301 of the JVM is not suitable for this product: version 11 or greater is required." and immediately quits. I have downloaded jdk 16 and installed it. Redownloading Eclipse fixes it until I close it again. How can I fix this? I am a new Java programmer and am not experienced with any of this.
You should have a folder like ths: C:\Program Files\Java. In there, there should be a folder named 1.8.0_301. Delete this folder and reinstall java.
I had the same problem, this solved it for me...
First of all I suggest you check the version of your eclispe IDE. You may have downloaded a version that doesn't supprot your installed jdk.
This link should provide you with the suitable jdk version for every eclipse version.
https://wiki.eclipse.org/Eclipse/Installation.
I hope I helped you a bit.
Cheers!
I had this problem with Java version 1.8.0_351.
In the program management settings of Windows I removed Java 8. After that, my Eclipse installation worked fine.
I upgraded to the newest Mac Pro running Big Sur (11.4) from my 12 year old Mac Pro running Mojave (10.14.6). The old version of Eclipse was version was Kepler service release 2. When I installed the Mac and restored from backup, Eclipse flat out would not run, so I deleted it and downloaded and installed the latest version 2021-03 (4.19.0). I also updated JAVA SE to version 16.0.1 from Java version SE 7.
When I tried to run/compile a previous working project, I get:
I then decided to update the libraries found in the Java Build Path properties to the latest I could find:
to see if that made any difference. It didn't. I'm probably missing something very basic but I don't know what, since I use Eclipse only rarely.
I decided to go down the rabbit hole and download the missing jars in the error log, one after another. It just kept getting deeper and deeper with no end in sight. Just didn't quite pass the smell test.
Hmmm. I originally downloaded eclipse from the main elcipse.org page and went to the downloads button and installed it. Turns out the eclipse directory was only 21.2 MB. Plugin directory was basically empty. Hmmm.
I stumbled on the download file eclipse-SDK-4.19-macosx-cocoa-x86_64.dmg after looking for a SWT download. This file was the eclipse version that was 295.4MB in size. Double hmmm. So I ran it. Needless to say I was startled when my project compiled and ran right off the bat. Gee, thanks eclipse. Can you make it any more difficult for your Mac users? Anyway after a wasted day of head banging... problem solved.
I had java version 8 previous and my eclipse worked just fine. But now I have java version 7 and I can't open eclipse on my computer. What should I do? please help.
I think there are two options:
Upgrade to Java version 8 (or newer).
If you can't do that, downgrade to a version of eclipse that supports Java 7. eclipse 4.5 (Mars) (or earlier as noted on the linked page), as of eclipse 4.6 (Neon) Java 8 is required.
I feel I should note that newer versions of Java (and eclipse) can still target Java 7 (and many earlier versions).
But now I have java version 7 and I can't open eclipse on my computer. What should I do?
Use versions that work together. When you for example look at your second screen shot, it says something like "requiredJavaVersion=1.8" or so.
In other words: you can't just come in and run eclipse with any version of java.
The other answer gives you the required details.
And a final note here: in case you tried to start eclipse with that older JVM in order to "allow" to ensure that eclipse won't allow "java 8" stuff in a project: that isn't the right way then. Instead: eclipse allows you to "define" JDKs to be used for your project. So you can easily tell eclipse: "I have a Java7 jdk sitting here, please use that for project X".
You do not need to run eclipse itself with a Java7 JVM in order to use a Java7 JDK for an eclipse project!
There will be a file under the Eclipse installation directory named as eclipse.ini.
It will launch the eclipse for that specific jdf and you can change the path to your jdk7.
Hope it helps.
It depends basically on which version of the eclipse you have.
If you have eclipse 4.6(Neon) or the latest version, then you must need a newer JDK version of Java (>=1.8 which you need to download). Or If you want to roll back to an older version of Eclipse then consider downloading eclipse 4.5(Mars).
Or If you have an eclipse version of 4.5(Mars) or older then see in eclipse.ini
-Dosgi.requiredJavaVersion = 1.8 and change it to -Dosgi.requiredJavaVersion = 1.7 which can be found in the folder containing eclipse.exe file.
I've recently upgraded from JDK 10 to JDK 11 and installed the latest Eclipse IDE for Java developers, at verison 2018-12 (4.10.0).
However for some reason my old Java FX projects (that worked with JDK 10) are not working. It says that the classes cannot be resolved. The image below shows the red lines where the affected classes lie.
I've tried a number of things such as making sure the build path of the project is correct:
I've also made sure the eclipse javafx plugin is installed:
I've also made sure my JDK 11 install has had the correct envrioment variables set, but none of the above has had any affect.
I've also looked at similar questions related to this but none of there soloutions worked.
Any help would be appreiated.
I'm using Eclipse to program Android applications, and when I opened the program yesterday, it popped up an error saying I need to install JRE - I've downloaded the JRE and installed it - when during the installation I got a message saying that the JAVA version I have on the computer (Version 7) is too old for the JRE (Version 8), and that I need to update the JAVA also.
I did so, and then opened up the Eclipse again - And all of the projects,that before worked great, are now full with errors.
I tried installing all of the SDK updates - didn't work, also tried uninstalling Eclipse and re-install it - also didn't work.
The errors I get are: "XXX cannot be resolved to a type" - in amost every single line in the project.
How do I fix it??
Thank you!!
android development tool(adt) are install.. and all update SDK and then import an old program.. Ithink then work.
I would suggest to check that your java build path is functioning properly. This kind of error for me usually means that eclipse cannot find the JRE installation.
Form eclipse you can go to Project->Properties and check for any errors there. Any inconsistency there would cause all your projects to fail.
First of all, you need the JDK installation, not JRE. Second, Android currently supports up to Java v7, which means you'll need to get JDK v7 from here. Make sure you download the correct 32-bit or 64-bit JDK version for your operating system.
Also, ensure your Android SDK and Android Development Tools (ADT) are on the same released version. Different versions of Android SDK and ADT can lead to many unforseen problems.