What is difference between CDC, JRE, OSGi execution environment?

Question

In terms of Eclipse, what is the difference between CDC, JRE and OSGi execution environments? What are the consequences of using any one of above 3 execution environment at the time of creating new project in eclipse?

Answer 1

CDC is not related to C/C++ Tooling (that's the CDT), it is instead one of several specifications for the Java Runtime and language features you are targeting, specifically Connected Device Configurations (think embedded systems with less power than even the Raspberry Pi). See an explanation and list of the Execution Environments here.