private static int printKeytabInfo()

in kerby-tool/client-tool/src/main/java/org/apache/kerby/kerberos/tool/klist/KlistTool.java [184:234]
50 lines of code
9 McCabe index (conditional complexity)

    private static int printKeytabInfo(KOptions klOptions) {
        String[] header = new String[4];
        header[0] = "KVNO Principal\n"
                + "---- --------------------------------------------------------------------------";
        header[1] = header[0];
        header[2] = "KVNO Timestamp           Principal\n"
                + "---- ------------------- ------------------------------------------------------";
        header[3] = header[2];
        int outputIndex = 0;
        if (klOptions.contains(KlistOption.SHOW_KTAB_ENTRY_TS)) {
            outputIndex |= 2;
        }
        if (klOptions.contains(KlistOption.SHOW_KTAB_ENTRY_KEY)) {
            outputIndex |= 1;
        }
        System.out.println("Keytab name: FILE:" + keytabFilePath);
        try {
            File keytabFile = new File(keytabFilePath);
            if (!keytabFile.exists()) {
                System.out.println("klist: Key table file '" + keytabFilePath + "' not found. ");
                return 0;
            }
            System.out.println(header[outputIndex]);
            SimpleDateFormat format = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss", Locale.US);
            Keytab keytab = Keytab.loadKeytab(keytabFile);
            List<PrincipalName> principals = keytab.getPrincipals();
            for (PrincipalName principal : principals) {
                List<KeytabEntry> keytabEntries = keytab.getKeytabEntries(principal);
                for (KeytabEntry entry : keytabEntries) {
                    StringBuilder sb = new StringBuilder();
                    sb.append(String.format("%-4d ", entry.getKvno()));
                    if ((outputIndex & 2) != 0) {
                        Date date = new Date(entry.getTimestamp().getTime());
                        sb.append(format.format(date));
                        sb.append(' ');
                    }
                    sb.append(String.format("%s ", principal.getName()));
                    if ((outputIndex & 1) != 0) {
                        sb.append("(0x");
                        sb.append(HexUtil.bytesToHex(entry.getKey().getKeyData()));
                        sb.append(")");
                    }
                    System.out.println(sb);
                }
            }

        } catch (IOException e) {
            System.err.println("klist: Error while scan key table file '" + keytabFilePath + "'");
        }
        return 0;
    }