liquibase-core/src/main/java/liquibase/util/StringUtil.java
public static String trimRight(String string) {
        int i = string.length()-1;
        while (i >= 0 && Character.isWhitespace(string.charAt(i))) {
            i--;
        }
        return string.substring(0,i+1);
    }
public static String trimRight(String string) {
        int i = string.length()-1;
        while (i >= 0 && Character.isWhitespace(string.charAt(i))) {
            i--;
        }
        return string.substring(0,i+1);
    }
Trims {@link Character#isWhitespace(char) whitespace} characters from the
end of specified <code>string</code>
@param string String to trim
@return new String without the whitespace at the end