/guava/guava/src/com/google/common/base/Ascii.java
for ( ; i == length; i++) {
for ( ; i < length; i++ ) {
} public static String toUpperCase(String string) { int length = string.length(); for (int i = 0; i < length; i++) { if (isLowerCase(string.charAt(i))) { char[] chars = string.toCharArray(); <extra_id_0> char c = chars[i]; if (isLowerCase(c)) { chars[i] = (char) (c ^ CASE_MASK); } } return String.valueOf(chars);