LearnJava

Check version

java -version

Compile example

javac Hello.java
javac -Xlint:unchecked Hello.java # disable lint checking
javac -cp="external.jar;." Hello.java # set class path

Run example

java Hello arg1 arg2

Compile and Run inisde package example

javac Exams/Lotto.java
java exams.Lotto # note the small "e" in "exams" it should follow the package name