package javasec.samples.ch14;// Store an X500 Name and extract its components on demandpublic class X500Name {    private String CN, OU, O, L, ST, C;    private String name;    private char nameChar[];    public X500Name(String s) {        if (s == null)            throw new IllegalArgumentException("Name can抰 be null");        name = s;    }    public String getCN() {        if (CN == null)            CN = parse("CN=");        return CN;    }    public String getOU() {        if (OU == null)            OU = parse("OU=");        return OU;    }    public String getO() {        if (O == null)            O = parse("O=");        return O;    }    public String getL() {        if (L == null)            L = parse("L=");        return L;    }    public String getST() {        if (ST == null)            ST = parse("ST=");        return ST;    }    public String getC() {        if (C == null)            C = parse("C=");        return C;    }    // Parse the name for the given target    private String parse(String target) {        if (nameChar == null)            nameChar = name.toCharArray();        char targetChar[] = target.toCharArray();        for (int i = 0; i < nameChar.length; i++) {            if (nameChar[i] == targetChar[0]) {                // Possible match, check further                boolean found = true;   // At least so far...                for (int j = 0; j < targetChar.length; j++) {                    try {                        if (nameChar[i + j] != targetChar[j]) {                            // No match, continue on...                            found = false;                            break;                        }                    } catch (ArrayIndexOutOfBoundsException aioobe) {                        // No match, and nothing left in nameChar                        return null;                    }                }                if (found) {                    int firstPos = i + targetChar.length;                    int lastPos;                    int endChar;                    if (nameChar[firstPos] == 抃"