Java比较字符串大小

/**
 * 比较字符串的大小
 *
 * @param paramString1
 * @param paramString2
 * @return true paramString1 < paramString2；
 * <p/>
 * false  paramString1 >= paramString2
 */
private static boolean compareTheSize(String paramString1, String paramString2) {
    boolean flag = false;
    char[] str1Chars = paramString1.toCharArray();
    char[] str2Chars = paramString2.toCharArray();
    int num = str1Chars.length < str2Chars.length ? str1Chars.length : str2Chars.length;
    for (int i = 0; i < num; i++) {
        if (str1Chars[i] > str2Chars[i]) {
            break;
        } else if (str1Chars[i] < str2Chars[i]) {
            flag = true;
            break;
        } else if (i == num - 1) {
            flag = str1Chars.length < str2Chars.length;
        }
    }
    return flag;
}

/**
 * 比较字符串的大小
 *
 * @param paramString1
 * @param paramString2
 * @return true paramString1大于paramString2； false paramString1不大于paramString2
 */
private static boolean compareTheSize2(String paramString1, String paramString2) {
boolean flag = false;
char[] str1Chars = paramString1.toCharArray();
char[] str2Chars = paramString2.toCharArray();
int num = str1Chars.length < str2Chars.length ? str1Chars.length : str2Chars.length;
for (int i = 0; i < num; i++) {
if (str1Chars[i] > str2Chars[i]) {
            flag = true;
break;
        } else if (str1Chars[i] < str2Chars[i]) {
break;
        } else if (i == num - 1) {
            flag = str1Chars.length > str2Chars.length;
        }
    }
return flag;
}