How to compile and run Java from terminal if it gives this error?

Question

Java

1) There are directories:
- - - - application:
- - out - for binaries
- - src - for sources (App.java file is here)

Being in the application directory, I want to compile files from src to out:
javac -sourcepath ./src -d ./out App.java Error

:
error: file not found: App.java
Usage: javac
use --help for a list of possible options

out App.java
then everything will work and the binary will be in out.

2) If go to out directory and try to run App.class with:
java App
or
java -classpath ./App

Error:Could not find or load main class App
(PS code contains nested class)

Answer 1

javac -d out src/App.java
java -cp out App