The project was not built due to “Failed to init ct.sym for C:\Program Files\Java\jre-10.0.2\lib\jrt-fs.jar” in IDE Eclipse

问题

Good day! I did a servlet in IDE Eclipse, but I got this problem after creating a new Dynamic Web Project (File / New / Dynamic Wev Project).

I see this in Markers:

"The project was not built due to "Failed to init ct.sym for C:\Program Files\Java\jre-10.0.2\lib\jrt-fs.jar" in IDE Eclipse"

My servlet does not want to build. There is a java-file, but no class-file after building. I deleted, created, cleaned my project. Later I deleted and added Tomacat-server. Java EE is intalled.

No result. Google can`t help me.

Please, help me to solve this trouble...

回答1:

Whenever you create the java project using eclipse, you have 3 choices given which are,

Use an execution environment JRE
Use a project specific JRE
Use default JRE 'jre-10.0.2' and workspace compiler preferences

Try to select the third choice.

回答2:

solution::

Preference > Installed JREs > add > standard VM (not sure but works) > Directory > go to where you download your java (eg:G:\Java\jdk-15.0.1) > Finish

Preference > Installed JREs > execution environment > JavaSE-15 > choose jdk-15.0.1 > apply

Create your Java project.

PS::

I used user14235983 's method before, it worked, but using this would cause a problem of not showing the documentation of the functions (in my case).

So I checked the library again. It seemed like there is something wrong with the path. So I tried to change it. And then it worked. And I came back here, look through Myth_Star & GokulnathP 's answer again, I found that we are using the same method.

In your question, it seems like you have the correct path. (So I am not sure whether we are having the same type of problem.) Maybe its because you are using "\Java\jre", but I am using "\Java\jdk". Else maybe try to reinstall your Java.

回答3:

Not sure if you've solve the problem or not but I just wanted to help since I was having the same problem just now.

In eclipse go to Window.
In Window go to Preference.
In Preference, in the search bar type "Installed JREs"
Edit the jre to the file directory in which your JDK is installed i.e C:\Program Files\Java\jdk-14.0.2 after that you can close and refresh and it should build fine.

回答4:

I am also having this same issue for 3 days, finally i find out the solution,

While adding tomcat as server click on Installed JREs and check the path is exist in your system and the path is not a temp folder
For both the cases add C:\Program Files\Java\jdk-14.0.1.

回答5:

In the installation step where you have to specify the jdk, select the one which works and has 1 vm atleast, if you can't see, add it to JAVA_HOME or PATH variable in system variables. Check if it works by using the command prompt: java --version and javac If it shows the appropriate messages without warning or not found, you can specify that path while installing.

回答6:

I was having the same error, except mine was stored in ...\AppData\Local\Temp\eoiEBC.tmp\plugins\org.eclipse.justj.openjdk.hotspot.jre.minimal.stripped.win32.x86_64_15.0.1.v20201027-0507\jre\lib\ - this message appeared out of nowhere and was no longer able to build. Not exactly sure where it came from, but deleting the .jar did the trick and all was good again.

If this has started happening randomly and your project isn't dependent on it I'd just get rid of it. Something is breaking during its init. Keep it on hand if you do need it though.

回答7:

Whenever you create the java project using eclipse, you have 3 choices given which are,

1.Use an execution environment JRE

2.Use a project-specific JRE

3.Use default JRE 'jre-10.0.2' and workspace compiler preferences

and after that can also configure jres..check the image select the path and click on Apply and close and ready to go for your new java project

来源：https://stackoverflow.com/questions/63446925/the-project-was-not-built-due-to-failed-to-init-ct-sym-for-c-program-files-jav

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