Can't launch client eclipse - java

i'm trying to launch the minecraft client using eclipse for Minecraft 1.8.9 mods, but when I try to launch client, I get:
'Launching Client' has encountered a problem.
Variable references empty selection: ${project_loc}
does anybody know what could be causing this or how to fix it?
edit: if It helps at all, i have created a github repo with my code here
edit #2:
I selected the correct folder as pointed out by a comment, but now It does this:
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit
then in console it says:
Unrecognized option: -Xincgc

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Error: Installation did not succeed. The application could not be installed in Android Studio

I am new to android studio. And the app on which I am working was not giving the installation error with the last code change. Once I add another line of code, I start getting error:
Timed out waiting for the process (com.iab.omid.sampleapp) to appear on
Pixel_3a_API_32_arm64-v8a [emulator-5554].
Installation did not succeed.
The application could not be installed.
List of apks:
[0] '/Users/mukul/Documents/jivox/jivox-android/omsdk-android-1.3.31-Jivox/OM-DemoApp/build/intermediates/apk/defaults/debug/OM-DemoApp-defaults-debug.apk'
Installation failed due to: ''cmd package install-create -r -t --user current --full --dont-kill -r -t --skip-verification -S 10540209' returns error 'Unknown failure: Exception occurred while executing 'install-create':
android.os.ParcelableException: java.io.IOException: Requested internal only, but not enough space
The app is still opening and it seems like the newly added code is not reflected there. (not sure about this).
How can I fix this issue?
Please let me know if more details are required from my side.
Your emulator has ran out of space.
You can clear space by wiping the data
You can add more space by going to advanced settings in AVD popup

Error occurred during initialization of VM : java.lang.NoClassDefFoundError: java.lang.Object

when i run:
java -version
I get:
Error occurred during initialization of VM
java.lang.NoClassDefFoundError: java.lang.Object
I read this link https://support.oracle.com/knowledge/Middleware/1006790_1.html ,
however i don't know how to find "the JVM installation folder", and how to manage the rt.jar.
Or how to "switch to modify the search path of the bootstrap class loader"
PS: I try to reinstall java, but I only get a new folder jdk-14.0.2 in C:/Programmes/Java beside jdk-14.0.1
Someone can help me?
I change my environment variables (add path to jdk14) and it work!
I was having this issue for so long. I finally solved the issue by following this post. Once I was done, I restarted my terminal and now it recognizes my Java version!
https://www.baeldung.com/java-home-on-windows-7-8-10-mac-os-x-linux

Reason and fix for "Error: Could not find or load main class Anne" on Scala Getting started tutorial

I'm just starting out with Scala and have been following its Getting Started instructions. The second part of the instruction involves pulling the hello-world template by running the sbt new scala/hello-world.g8 command.
My problem is that it keeps on giving me this error:
Error: Could not find or load main class Anne
Caused by: java.lang.ClassNotFoundException: Anne
I'd like to know the reason for this, as well as any possible fix I might use.
The following is my insight and attempts on fixing this problem.
Insight:
1. I might have a problem with java installation/scala/sbt installation that needs this class Anne since even with other sbt commands like sbt sbtVersion I get the same error
Attempts:
1. Change command to retrieve from full url:
sbt new https://github.com/scala/hello-world.g8
2.(Edit): Previously I thought the repository scala/hello-world.g8 did not exist and tried getting from other repositories with no luck and with the same error as above. However it was pointed out below that the repository actually exists in this url https://github.com/scala/hello-world.g8, thanks Dmytro Mitin.
I was looking into the incorrect account (sbt) instead of (scala)
(Edit): Day 2
3. Uninstall/Reinstall sbt -- still getting the error
4. Checked if java running properly by compiling sample code and running ( successful )
I was actually running the command in Visual Studio Code's bash terminal. I tried running it with cmd and everything's now working fine.

An internal error occurred during: "Initializing Java Tooling". java.lang.NullPointerException

I'm getting an error java.lang.NullPointerException: "Initializing Java Tooling" soon as Eclipse IDE stated during
have tried:
Deleted existing work space and restarted the IDE
CheckOut latest code and delete the previous one
Created a new work space
Changed the current working space directory
Does it corrupt the existing code as well?
Any ideas how to solve this problem?

Unable to start the daemon process in android studio

I am finding this error again and again.I do uninstall and re install android studio but it's not working.Could anyone help in this issue please.The error message is like this:
Error:Unable to start the daemon process.
This problem might be caused by incorrect configuration of the daemon.
For example, an unrecognized jvm option is used.
Please refer to the user guide chapter on the daemon at https://docs.gradle.org/4.1/userguide/gradle_daemon.html
Please read the following process output to find out more:
Error: Could not find or load main class org.gradle.launcher.daemon.bootstrap.GradleDaemon
Meanwhile you can try this
1.Open the projects gradle.properties file in android studio
2.Added this line at end of file org.gradle.jvmargs=-Xmx1024m & Save the file
3.Close & reopen the project
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