Delete the source code of Java comments

Delete the source code of Java comments
 
Import java. util. RegEx .*;
Import java. Io .*;
Import util9 .*;
// Some java files have too many comments, which affects readability. This class can solve this problem.
// Usage.
Public class delnoteinjavafile {
Static bufferedreader BR;
Static bufferedwriter bw;
Static string suffix = ". nonote. Java ";
Public delnoteinjavafile ()
{
String message = "input file name :";
String ret = read9.stringfromcontrol (Message );
If (injava (new file (RET) system. Out. println ("successed ");
Else system. Out. println ("failed ");
}
Public delnoteinjavafile (string F)
{
If (injava (new file (F) system. Out. println ("successed ");
Else system. Out. println ("failed ");
}
Public delnoteinjavafile (file F)
{
If (injava (F) system. Out. println ("successed ");
Else system. Out. println ("failed ");
}
Public static Boolean check (file F)
{
If (! F. exists ()){
System. Err. println ("wrong1.file not exists ");
Return false;
}
If (! F. isfile ()){
System. Err. println ("wrong2.abstract file is not a file ");
Return false;
}
Return true;
}
Public static Boolean injava (file F ){
If (check (f) = false) return false;
File FF = new file (F. getname () + suffix );
If (FF. exists ()){
System. Out. println ("wrong3 ");
Return false;
}
String S, SS;
Try {
Ff. createnewfile ();
BR = new bufferedreader (New filereader (f ));
BW = new bufferedwriter (New filewriter (ff ));
// The slash is Char '/', the star is Char '*'.
Pattern slash_star_start = pattern. Compile ("// *. *"); // just like :/*....
Pattern star_slash = pattern. Compile ("^ .*//*/");
Pattern slash_star_both = pattern. Compile ("///*.*//*/");
Pattern slash2 = pattern. Compile ("// s {0 ,}//");
// Pattern star = pattern. Compile ("// s {0 ,}//*");
Matcher MAT;
Int I = 0;
Boolean note = false;
While (S = Br. Readline ())! = NULL ){
// Deal with such string :.../*...*/....
If (S. Trim (). Length () = 0) continue;
S = S. replaceall (slash_star_both.pattern (),"");
// Deal :....//....
MAT = slash2.matcher (s );
If (mat. Find () & not; E = false ){
System. Out. println ("S1 =" + S );
S = S. substring (0, mat. Start ());
If (S. Trim (). Length () = 0) continue;
Bw. Write (s );
Bw. newline ();
Continue;
}
// Deal :...*/...
MAT = star_slash.matcher (s );
If (mat. Find ()){
Note = false;
System. Out. println ("S2 =" + S );
S = S. substring (mat. End ());

If (S. Trim (). Length () = 0 ){
Continue;
}
}
If (note = true ){
Continue;
}
// Deal :..../*....
MAT = slash_star_start.matcher (s );
If (mat. Find ()){
Note = true;
System. Out. println ("s =" + S );
S = S. substring (0, mat. Start ());
System. Out. println ("S1 =" + S + ", mat. Start () =" + mat. Start ());
If (S. Trim (). Length () = 0 ){
Continue;
}

}
Bw. Write (s );
Bw. newline ();
}
BR. Close ();
Bw. Close ();
/*
If (F. renameto (new file (FF. getname () + ". Bak "))){
System. Out. println ("backup file is:" + ff. getname () + ". Bak ");
If (FF. renameto (f ))
System. Out. println ("output file is:" + F. getname ());
Else {system. Out. println ("wrong53"); Return false ;}
}
Else {
System. Out. println ("wrong55 ");
Return false;
}
*/
}
Catch (ioexception e ){
E. getmessage ();
Return false;
}
Return true;
}

Public static Boolean injava (string s ){
Return injava (new file (s ));
}
Public static void main (string a [])
{If (A. Length = 0) New delnote9 ();
Else new delnoteinjavafile (A [0]);
}
}