# JDK setup ### JDK setup Install Java devilment toolkit 1.8 (required, higher version Java may not work properly with Spark, we found out jdk1.8.0\_191 works well, therefore, recommend jdk1.8.0\_191. (Do NOT install JDK 9 or above, Spark is not currently compatible with JDK 9 or above.) JDK Windows (10) installation. No blank space allowed in JDK folder name Avoid install Java Development Kit into a folder which name contains space, such as c:\program files or c:\program files (x86). Best should be no space in folder name. If you installed JDK under c\\:program files or c\\:program files (x86), you will need to later in your Scala code set environment variable JAVA\_HOME to C\\:Progra\~1\Java\jdk1.8.0\_191 If JDK is in C:\Program Files C\\:Progra\~2\Java\jdk1.8.0\_191 If JDK is in C:\Program Files (X86) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://george-jen.gitbook.io/data-science-and-apache-spark/jdk_setup5.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.