How to install IntelliJ IDEA 2017.3.1 Released with Few Fixes on Ubuntu 17.04, 17.10

  JetBrains’ IntelliJ IDEA is a Java integrated development environment (IDE) for developing computer software. It is developed by JetBrains (formerly known as IntelliJ), and is available as an Apache 2 Licensed community edition, and in a proprietary commercial edition. Both can be used for commercial development.

IntelliJ IDEA 2017.3.1 Changelog:

• fixed: External system: do not propose to restore removed modules created for the project preview
• Performance: High memory usage by VfsAwareMapReduceIndex
• Exception: CCE at com.intellij.execution.testframework.sm.runner.SMTRunnerTreeStructure.getParentElement
• fixed: "Suspicious collections method calls": false positive if argument type is superset of collection type
• fixed: Element: class com.intellij.psi.impl.source.PsiJavaFileImpl because: different providers:
• fixed: Major formatting regression from 2017.2.6 to 2017.3
• fixed: Navigation bar ignores context when operated with keyboard
• fixed: Clearing output directory slows down total build time
• fixed: IDEA thinks build caches are corrupt when there's just a file that's locked, forcing unnecessary rebuild
• fixed: bad build command options to javac in Java 9, causing "--patch-module specified more than once"
• fixed: Java compiler error navigation jumps to a wrong column when using tab size other than 8 spaces
• Usability: Full project rebuild is should be triggered after adding module-info.java 
• See announcement for details.

Installation instructions: 
 
   We can add this PPA to Ubuntu Operating  Systems and install IntelliJ IDEA 2017.3.1 with few easy commands.

   Open terminal and insert command line...

$ sudo add-apt-repository ppa:ubuntuhandbook1/apps $ sudo apt-get update $ sudo apt-get install intellij-idea-community

   Also replace intellij-idea-community in the code with intellij-idea-ultimate for ultimate edition.

Install via package if PPA is not up to date

  We can install the Snap package. WELL integrated with Ubuntu. Support for Ubuntu 16.04 and higher:

      Open terminal via Ctrl+Alt+T and insert command line...

For IntelliJ IDEA 2017.3.1 community  edition

$ sudo snap install intellij-idea-community --classic

   For IntelliJ IDEA 2017.3.1 ultimate edition, run following command instead:

$ sudo snap install intellij-idea-ultimate --classic

 Option, remove IntelliJ IDEA 2017.3.1

   For remover Snap package:

$ sudo snap remove intellij-idea-community intellij-idea-ultimate

   For remover PPA package:

$ sudo apt-get remove --autoremove intellij-idea-community intellij-idea-ultimate