Java
	:> an object oriented programming language
	#> 1995
	@> james gosling
	<< JVM
	1+> easy to use
	2+> multithreaded
	3+> cross platform
	-> slower than C and C++
	$> C++, C#

	!>
	public class JavaSample {
		public static main void(String[] args) {
			System.out.println("Hello, World");
		}
	}
    
	>>> https://www.tutorialspoint.com/java/java_overview.htm

:>		definition
@>		author, creator
#>		released
<<		required, prerequisite
$>		alternative
+>		advantage
->		disadvantage
?>		problem
==		solution
<>		unlike, opposite
=>		point, tip
-		list (add another dash "-" for a nested level like "--)
!>		example
~>		wrong example
>>		link
>>>		reference
nX		Numbered ones (put a number before signs like "1>>" or "1?>")