Скачать или смотреть Linux - How to Install Java (OpenJDK 21)

In this short guide I show how to install Java on Linux using the Terminal. You will learn how to check if Java is already installed with the java -version command, how to see available OpenJDK versions, and how to install OpenJDK 21 (headless) using sudo apt install openjdk-21-jdk-headless. The steps shown work on Debian/Ubuntu-based systems and are easy to follow for beginners and intermediate users. I demonstrate the exact command, entering your password, confirming the installation, and verifying Java is installed at the end.

How to install Java on Linux?
How to install OpenJDK 21 on Linux?
How to check Java version on Linux using java -version?

0:00 Introduction
0:05 Open Terminal and check if Java is installed (java -version)
0:19 See available Java/OpenJDK versions
0:38 Run sudo apt install openjdk-21-jdk-headless (install command)
0:58 Confirm installation and check progress
1:17 Verify Java is installed (java -version) and outro

#Linux #Java #OpenJDK #InstallJava

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