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Install Java 1.8 JDK:
- You can find instructions for installing the JDK for different platforms here: http://docs.oracle.com/javase/8/docs/technotes/guides/install/install_overview.html
- OR you can directly download the JDK from here: http://www.oracle.com/technetwork/java/javase/downloads/index.html
- Click on the Downloads tab: As of this writing, the latest version is Java SE 8u77 - click the Download button under the label JDK
- Choose the executable appropriate for your platform
- Download and install, leaving all of the default settings during installation
- For example, on the Mac, the default location (“home” directory) will be: On the Mac, by default this will be /Library/Java/JavaVirtualMachines/jdk1.8.0_77.jdk/Contents/Home
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Install Intellij
- Download and install the Community edition (Mac or Windows or Linux): https://www.jetbrains.com/idea/download/