Thread: Problem with String replace and CharSequence

Im trying to replace a "illegalCharacter" in a string, but ive had no success with doing it with a CharSequence, i can get it to detect the char that i want to remove but i cant replace it.

IllegalCharacters[] = null;
CharSequence IllegalChar = null;
 
//Defining illegal characters \/:*?"<>|
    IllegalCharacters = new char[9];
    IllegalCharacters[0] = 92;
    IllegalCharacters[1] = 47;
    IllegalCharacters[2] = 58;
    IllegalCharacters[3] = 42;
    IllegalCharacters[4] = 63;
    IllegalCharacters[5] = 34;
    IllegalCharacters[6] = 60;
    IllegalCharacters[7] = 62;
    IllegalCharacters[8] = 124;
 
IllegalChar = java.nio.CharBuffer.wrap(IllegalCharacters);
System.out.println(sub);
boolean BoolContainsIllegal = sub.contains(IllegalChar);
        if(BoolContainsIllegal = true){
         sub = sub.replace(IllegalChar, "_");
         System.out.println(sub);
        }

You want to replace with?????
Suppose, you have illegal character at index 6.
And you want to replace it with say 000.

IllegalCharacters[6]=000;

Is this, what you was trying to ask??? May be i didn't get the clear understanding of what you are looking for.

Sorry about that i might have given you too little info but heres an explenation.

Sub contains a string which suppousedly contains an illegal character.
Im defining all the characters, (in a char Array called "IllegalCharacters"),that are illegal for this string to have ex -> :
Im putting all the illegal characters into a charBuffer called "IllegalChar", im then searching the string for a illegal character if it exists in the string it retruns true.

Say the variable Sub contains = "Hi "
Then the search will retrun true and then the replac should happen.
Up to this point theres no problems, but when i execute the statement:

sub = sub.replace(IllegalChar, "_");

Noting actually happens.... In other words the character " : " that should have been replaced with "_" hanst been replaced, so the string output is the same as the one i ran before the actual "if" statement

I get no errors from running this.

Hope this explains it better!