The import com.rti cannot be resolved – Java, Eclipse, Ubuntu

  Kiến thức lập trình

I downloaded files from , which is published by NASA.

JDK 1.8
Eclipse Luna 4.4.2 with modeling tools
DDS Implementation (RTI DDS)

My settings
Ubuntu 20.04 Focal Fossa

I downloaded RTI 30-days trial version from official homepage.
When I open the file (astrobee_gds), I got so many error messages “The import com.rti cannot be resolved”.
Does anyone know about this issue?

I saw lots of this problem solved by adding external .jar file.
However, i cannot find rti’s jar file.

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