JAVA Problem

hello... I'm new on java programming and i have this code...
public String gettok(String getTokenText,int MinWord,int MaxWord,int seperatorAscii) {
char outputChars[] = null;
int destination_counter = 0;
int loop = 0;
show_text("HERE IS FINE...");
while (loop < getTokenText.length()) {
show_text("UNTIL HERE IT IS FINE");
outputChars[destination_counter++] = getTokenText.charAt(loop++);
show_text("THIS IS NOT WORKING");
}
show_text("THIS IS NOT WORKING");
return outputChars.toString() + "NOT...";
}
please tell me what's wrong :\

 

the problem is this statement:

outputChars[destination_counter++] = getTokenText.charAt(loop++);

that says you are adding something from nothing as stated by your line:

outputChars[] = null;

you may be able to solve the problem by creating the outputChars to have an initial length equal to getTokenText.length(). I don't know how you are going to implement your test for the gettok() function but other means of circumventing the "empty" initial size or segmentation error.

why don't you use

outputChar[ loop++ ] = getTokenText.charAt( loop++ );

instead and save memory by freing the space for destination_counter?

Is it not possible to use String for your outputChars instead?

outputChars.charAt( loop++ ) = getTokenText.charAt( loop++ );