sudo apt install openjdk-21-jdk
Installing JDK and taking a jstack threads dump or stack dump
source /etc/environment
To install on Ubuntu, you must install a Java Development Kit (JDK) . By default, Ubuntu often comes with only the Java Runtime Environment (JRE), which does not include diagnostic tools like jstack . 1. Identify Your Java Version
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sudo apt install openjdk-21-jdk
Installing JDK and taking a jstack threads dump or stack dump install jstack on ubuntu
source /etc/environment
To install on Ubuntu, you must install a Java Development Kit (JDK) . By default, Ubuntu often comes with only the Java Runtime Environment (JRE), which does not include diagnostic tools like jstack . 1. Identify Your Java Version sudo apt install openjdk-21-jdk Installing JDK and taking