Article 539M1 what to do when package not found?

what to do when package not found?

by
Elie99374
from LinuxQuestions.org on (#539M1)
i want to install netbeans on my mx linux,
in order to do that i need to install java 8,
i used: sudo apt install oracle-java8-set-default
and got: E: Unable to locate package oracle-java8-set-default

what shold i do now and in generalc when facing this?latest?d=yIl2AUoC8zA latest?i=tnF9HQGVtiE:pJa0cJ6nvmU:F7zBnMy latest?i=tnF9HQGVtiE:pJa0cJ6nvmU:V_sGLiP latest?d=qj6IDK7rITs latest?i=tnF9HQGVtiE:pJa0cJ6nvmU:gIN9vFwtnF9HQGVtiE
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