I’ve looked on oracle site, googled, but haven’t found any download link. only doc and tutorials Could somebody share the download link, please >Solution : The jstack command is part of the JDK. You can find it very quick and easy by checking out the JDK source code: https://github.com/openjdk/jdk/blob/master/src/jdk.jcmd/share/classes/sun/tools/jstack/JStack.java