Category: Java

Fix java.lang.UnsupportedClassVersionError on Debian/Ubuntu

Posted on by gaikwad411

You need to upgrade JDK to the required version.

You can get needed JDK version https://www.oracle.com/java/technologies/downloads/#java21

Download the deb file

wget https://download.oracle.com/java/21/latest/jdk-21_linux-x64_bin.deb

sudo dpkg -i downloaded_deb_file.deb

Pick the correct JDK version

sudo update-alternatives --config java