/**
* Convenience method for {@link Character#isDigit(char)}.
*
* @param c the character to test.
* @return true if so, false if not.
*/
protected boolean isDigit(char c) {
return Character.isDigit(c);
}
/**
* Convenience method for {@link Character#isWhitespace(char)}.
*
* @param c the character to test.
* @return true if so, false if not.
*/
protected boolean isWhitespace(char c) {
return Character.isWhitespace(c);
}
/**
* Convenience method for {@link Character#isLetter(char)}.
*
* @param c the character to test.
* @return true if so, false if not.
*/
protected boolean isLetter(char c) {
return Character.isLetter(c);
}