suggestions for newbee

Hi,

I'm newbee, and I've got some suggestions, questions. First I would say 
that, something I like when I beginned in Java and when I debug/improve 
existing lib/application is the coding convention +/- enforce by the 
compiler. The goal of the following suggestion  is to enforce some 
coding convention at the nice compilater level :
* remove 'var' and 'let'. If 'let' is to define constantes (!= 
immutable) then every constantes have name in uppercase (only), and 
variable start by lowercase. Compiler could automaticaly detect this and 
choose internaly between 'var' and 'let' rules.
* Why 'Type Inference' isn't systematic, and can't be use for arrays ? 
Could you give me samples ?
* Why not use
* Why do you choose to allow multiple class declaration in one file ? 
One thing, I dislike in C, C++ is to search for where is the 
implementation of the class X, the method Y,... and not in Java. But in 
java what is the need to duplicate information like the package name and 
the classname (lot of developper, like me, create one file per class 
public or not). So the suggestion is for the nice compiler to define the 
package from the directory hierarchy, and the target class definition or 
class addon from the name of File. It need to open and write more files 
but for growing project it's a plus (with or without IDE).

-------- before -------------------------------------------------------
//sample.nice

class Person 
{ 
  String name; 
  int age; 
  
  String display(); 
} 

class Worker extends Person 
{ 
  int salary; 
} 

display(Person p) 

{ 
  return p.name + " (age=" + p.age + ")"; 
} 

display(Worker p) 
{ 
  return p.name + " (age+" + p.age + ", salary=" + p.salary + ")"; 
} 

-------- after -------------------------------------------------------

//Person.nice

String name; 
int age; 

String display() {
  return name + " (age=" + age + ")";
} 

.................................
//Worker.nice
extends Person;

int salary; 

String display() {
  return name + " (age=" + age + ", salary=" + salary + ")"; 
} 

---------------------------------------------------------------


* like generate a default Constructor, why not generate default 
implementation for toString() (e.g. generate a string following the 
format of JSON http://www.json.org) and equals() comparison by fields 
(usefull for test) ?

I've got other may be stupid suggestion and question, I keep them for 
future ;-) (and I don't finish to read all the aviailable doc).

I'm a newbee in compilation and language developpement, but I could try 
to help you develop nice.

Thanks for time.


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