private boolean hasContent(String string) { for (int i= 0; i < string.length(); i++) { char ch= string.charAt(i); if (Character.isLetter(ch)) {
private boolean hasContent(TextBuffer buf, int start, int end) { for (int i= start; i < end; i++) { char ch= buf.getChar(i); if (!Character.isWhitespace(ch)) {
	private boolean hasContent(String string) {		for (int i= 0; i < string.length(); i++) {			char ch= string.charAt(i);			if (Character.isLetter(ch)) {				return true;			}		}		return false;	}	