java problem in kali

[samd_samii]

I have installed java 23 in kali but it is giving me an main file error.
i have tried to install other version as well as downloading from other source.But it did not slove my problem
device: Dell letitude 7400
OS : kali linux 2025.1

 

[samd_samii]

pleaase any one know the answer

 

[Brickwizard]

sudo apt update && sudo apt install default-jdk -y

 

[samd_samii]

sudo apt update && sudo apt install default

did not worked.but thanks for your help. it gave me the same error

 

[dos2unix]

ClassNotFoundException is usually a code error.

 

[jpnilson]

What exactly are you running when you get the error? Looks like some kind of path issue

 

[GatorsFan]

Have a look here - https://rollbar.com/blog/how-to-resolve-classnotfoundexception-in-java/#

and here as well - https://stackoverflow.com/questions/18093928/what-does-could-not-find-or-load-main-class-mean

 

[gvisoc]

Try with "java -version" instead of "-- version". Just one dash.

The JVM is somehow ignoring the "--version" and trying to load a program off the command line, which you didn't include, hence "Class not found: " and an empty name.

 

[GatorsFan]

Here is mine as @gvisoc has stated

user@expirion:~$ java -version

openjdk version "17.0.14" 2025-01-21
OpenJDK Runtime Environment (build 17.0.14+7-Debian-1deb12u1)
OpenJDK 64-Bit Server VM (build 17.0.14+7-Debian-1deb12u1, mixed mode, sharing)

this is what I get with what you are using

user@expirion:~$ java --version

openjdk 17.0.14 2025-01-21
OpenJDK Runtime Environment (build 17.0.14+7-Debian-1deb12u1)
OpenJDK 64-Bit Server VM (build 17.0.14+7-Debian-1deb12u1, mixed mode, sharing)

as you can see there is no difference

What packages do you show in Synaptic Package Manager that are installed? here is what I have installed on my machine

Your problem may be Java 23 use openjdk 17 instead - but here is how to install Java 23

1. Use the wget command to download the JDK 23 .deb package from the official Oracle website.

wget https://download.oracle.com/java/23/latest/jdk-23_linux-x64_bin.deb

Install the downloaded package:
Use dpkg to install the JDK 23 package on your Debian system.

dpkg -i jdk-23_linux-x64_bin.deb

1. Once the installation is complete, remove the downloaded .deb file to keep your system clean.

rm jdk-23_linux-x64_bin.deb

After the installation, you can check if Java is successfully installed by running:

java -version

This will display the installed Java version, confirming that JDK 23 is correctly set up on your Debian system.