jodd-core/src/main/java/jodd/util/StringUtil.java
public static String trimRight(final String src) {
		int len = src.length();
		int count = len;
		while ((len > 0) && (CharUtil.isWhitespace(src.charAt(len - 1)))) {
			len--;
		}
		return (len < count) ? src.substring(0, len) : src;
	}
public static String trimRight(final String src) {
		int len = src.length();
		int count = len;
		while ((len > 0) && (CharUtil.isWhitespace(src.charAt(len - 1)))) {
			len--;
		}
		return (len < count) ? src.substring(0, len) : src;
	}
Trim whitespaces from the right.