Is there a cross-platform Java method to remove filename special chars?

Question

I\'m making a cross-platform application that renames files based on data retrieved online. I\'d like to sanitize the Strings I took from a web API for the current platform.

Answer 1

There's a pretty good built-in Java solution - Character.isXxx().

Try Character.isJavaIdentifierPart(c):

String name = "name.é+!@#$%^&*(){}][/=?+-_\\|;:`~!'\",<>";
StringBuilder filename = new StringBuilder();

for (char c : name.toCharArray()) {
  if (c=='.' || Character.isJavaIdentifierPart(c)) {
    filename.append(c);
  }
}

Result is "name.é$_".