Replacing characters

[Lila Fowler]

Hi all

Im automatically creating a folder with user information, but i have to make sure that there are no illegal characters and if there are i should replace it with a "0" but although it goes into my if statement it refuses to replace the invalid character.

here is the relevant code

   			
String fileName = "T>*|:?G"; //String i'm using as a test
			
String osName = System.getProperty("os.name");
if(osName.startsWith("Windows"))
{
	String[] illegalWindowsCharArray = {"/", "\\", ":", "*", "?", "\"", "<", ">", "|"};
	for(int i = 0; i < illegalWindowsCharArray.length; i++)
	{
		if(fileName.contains(illegalWindowsCharArray[i]))
		{
			fileName.replace(illegalWindowsCharArray[i], "0");
		}
	}
} 

Any idea's?
thanks.

[Ulf Dittmer]

String.replace does not alter the string you're passing to it; rather, it returns the result of the replacement operation. You want something like " fileName = fileName.replace(... "

[Lila Fowler]

oh duh.. Thanks, works perfectly now.