What is "out" and function of it what is use of it in system.out.print()

Answer 1

https://stackoverflow.com/questions/36906347/what-is-out-in-system-out-println

Answer 2

System is a class present in java.lang package
out is static variable present in System class

out is an instance of java.io.PrintStream

Println is a method present in java.io.PrintStream

out is a static member so we can call it using class name.