Tally Error Error Code C0000005 Please Help Me Debug This JAVA(source Code)program! It Can Be Compiled,but It Does Not Run!!!?

Please help me debug this JAVA(source code)program! It can be compiled,but it does not run!!!? - tally error error code c0000005

*** After this together go.java than javac, which has no errors, but when I run it now as "java" Go "can not be executed. Says Exception in thread" main "java. .... Long ArrayIndexOutOfBoundsException 0 . go main (go.java: 3)
*** The source code: (Please help me to debug and run this program, please JAVA)

Class go (
public static void main (String [] args) (
String s = args [0];
int [] f = count (s);

)
int [] (String s count) (
int [] f = new int [26];
s.toUpperCase s = ();

for (int i = 0, i \\ \\ \\ \\ \\ \\ \\ \\ u0026lt, s.length (); i + +) (
char ch = s.charAt (i);

if (Character.isLetter (CH)) (
int j = CH - 'A';
+ + F [j];
)
)

return f;

)

void print (int [] f) (
for (int i = 0, j \\ \\ \\ \\ \\ \\ \\ \\ u0026lt; f.length j + +) (
char ch = (char) (j + 'A');
if (f [j]> 0)
System.out.println (CH + "" + f [j]);
)
)
)