Making sure you have the right Java version

1. Make sure you have Java installed. (how to install Java)
2. Open the terminal or command prompt and enter java -d64 -version.

It will output something like:

java version "1.8.0_202"
Java(TM) SE Runtime Environment (build 1.8.0_202-b08)
Java HotSpot(TM) 64-Bit Server VM (build 25.202-b08, mixed mode)

This output could be different for you.

• Make sure your java version is 1.8.0 (Java 8), Java 9 and higher is not supported at this time (unless it includes JavaFX/OpenJFX).
• If it says This java instance does not support a 64-bit JVM, make sure you installed 64-bit Java. (the online installer does not install 64-bit Java, use the offline 64-bit installer)

3. If you don't, install Java again using this tutorial. (you can install this alongside your existing Java installation and it shouldn't cause any problems)

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If you are still having problems, you can also try the v3.0 beta here, which includes Java so you won't need to install it yourself.