How do I change the IntelliJ IDEA default JDK

Question

I use IntelliJ IDEA as my development environment  and Maven for dependency management   I frequently build my project structure  directories  poms  etc  outside of IDEA and then import the project into IDEA using Import project from external model   This works great  except that in my poms I specify that the maven-compiler-plugin should use JDK 1 6  and when I import  IDEA informs me that the Language Level Changed and that Language level changes will take effect on project reload  and then prompts to reload the project   This is annoying because I always use the same JDK version   How do I change the default JDK that IntelliJ IDEA uses  so that I don t have to reload my project every time I import a new project

User · Answer

I am using IntelliJ IDEA 14 0 3  and I also have same question  Choose menu File   Other Settings   Default Project Structure          Choose Project tab  section Project language level  choose level from dropdown list  this setting is default for all new project

User · Answer

I have found out that in recent versions of IntelliJ IDEA requires Java 1 8 but is not configured by default   We can change the path or configure from Project Settings   Project   Project SDK  here we can edit or add the JDK  s path    in my case the path is located in C  Program Files Java jdk1 8 0 102

User · Answer

One other place worth checking  Look in the pom xml for your project  if you are using Maven compiler plugin  at the source target config and make sure it is the desired version of Java  I found that I had 1 7 in the following  I changed it to 1 8 and then everything compiled correctly in IntelliJ     lt build gt   lt plugins gt       lt plugin gt           lt groupId gt org apache maven plugins lt  groupId gt           lt artifactId gt maven-compiler-plugin lt  artifactId gt           lt version gt 2 3 2 lt  version gt           lt configuration gt               lt source gt 1 8 lt  source gt               lt target gt 1 8 lt  target gt               lt encoding gt UTF-8 lt  encoding gt           lt  configuration gt       lt  plugin gt   lt  plugins gt   lt  build gt

User · Answer

Download and unpack a JDK archive file   tar gz  and add it as a SDK in the  Project Structure  dialog box   Ctrl Alt Shift S     click on the gif to enlarge  Make sure to set the  Project language level  as well

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On my linux machine I use a script like this  export IDEA JDK  opt jdk14  idea-IC bin idea sh

User · Answer

To change the JDK version of the Intellij-IDE himself   Start the IDE -  Help -  Find Action  than type   Switch Boot JDK   or  depend on your version   Switch IDE boot JDK

User · Answer

Change JDK version to 1 8   Language level File -  project Structure -  Modules -  Sources -  Language level -  8-Lambdas  type annotations etc   Project SDk File -  project Structure -  Project 1 8  Java compiler File -  Settings -  Build  Executions  Deployment -  Compiler -  Java compiler

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The above responses were very useful  but after all settings  the project was running with the wrong version  Finally  I noticed that it can be also configured in the Dependencies window  Idea 2018 1 3 File -  Project Structure -  Modules -  Sources and Dependencies

User · Answer

For latest version intellij  to set default jdk sdk for new projects go to  Configure- gt Structure for New Projects - gt  Project Settings - gt  Project SDK

User · Answer

I am using IntelliJ 2020 3 1 and the File  gt  Other Settings    menu option has disappeared  I went to Settings in the usual way and searched for  quot jdk quot   Under  Build  Execution  Deployment  gt  Build Tools  gt  Maven  gt  Importing I found the the setting that will solve my specific issue  JDK for importer

User · Answer

This setting is changed in the  Default Project Structure     dialog   Navigate to  File  -   Other Settings  -   Default Project Structure         Next  modify the  Project language level  setting to your desired language level       IntelliJ IDEA 12 had this setting in  Template Project Structure     instead of  Default Project Structure

[java] How do I change the IntelliJ IDEA default JDK?

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