You want to install Java 21 on your Debian 12/11/10 operating system? Then you're in the right place!
First, it's important to update the package list of your Debian system and install any possible updates. You can do this with a simple command:
apt update && apt upgrade -y
If you want to install Java 21 on Debian 12/11/10, you can do so with a simple command:
wget https://download.oracle.com/java/21/latest/jdk-21_linux-x64_bin.deb
sudo dpkg -i jdk-21_linux-x64_bin.deb
Check if the installation was successful:
It's important that you also check if the installation was successful at the end. You can easily check this by querying the Java version.
java -versionIf you see your desired Java version here, the installation was successful.
If you see a different Java version, you might need to set the default Java version. You can list your Java versions with the following command:
sudo update-alternatives --list java
To set Java 21 as the default Java version, simply select the Java 21 version from the list. An example would be as follows:
sudo update-java-alternatives --set /usr/lib/jvm/jdk-21-oracle-x64
Now you can check the Java version again:
java -versionIf you see your desired Java version here, the installation was successful.
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