Example usage for java.lang StringBuilder charAt

Introduction

In this page you can find the example usage for java.lang StringBuilder charAt.

Prototype

char charAt(int index);

Source Link

Document

Returns the char value at the specified index.

Usage

From source file:com.vmware.bdd.cli.rest.RestClient.java

private String buildQueryStrings(Map<String, String> queryStrings) {
    StringBuilder stringBuilder = new StringBuilder("?");

    Set<Entry<String, String>> entryset = queryStrings.entrySet();
    for (Entry<String, String> entry : entryset) {
        stringBuilder.append(entry.getKey() + "=" + entry.getValue() + "&");
    }/* w ww .java 2  s.c o  m*/
    int length = stringBuilder.length();
    if (stringBuilder.charAt(length - 1) == '&') {
        return stringBuilder.substring(0, length - 1);
    } else {
        return stringBuilder.toString();
    }
}

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From source file:Gpw.java

public static String generate(int pwl) {
    int c1, c2, c3;
    long sum = 0;
    int nchar;/*from w ww.  ja  v  a2s  . c  o m*/
    long ranno;
    double pik;
    StringBuilder password;
    Random ran = new Random(); // new random source seeded by clock

    password = new StringBuilder(pwl);
    pik = ran.nextDouble(); // random number [0,1]
    ranno = (long) (pik * data.getSigma()); // weight by sum of frequencies
    sum = 0;
    for (c1 = 0; c1 < 26; c1++) {
        for (c2 = 0; c2 < 26; c2++) {
            for (c3 = 0; c3 < 26; c3++) {
                sum += data.get(c1, c2, c3);
                if (sum > ranno) {
                    password.append(alphabet.charAt(c1));
                    password.append(alphabet.charAt(c2));
                    password.append(alphabet.charAt(c3));
                    c1 = 26; // Found start. Break all 3 loops.
                    c2 = 26;
                    c3 = 26;
                } // if sum
            } // for c3
        } // for c2
    } // for c1

    // Now do a random walk.
    nchar = 3;
    while (nchar < pwl) {
        c1 = alphabet.indexOf(password.charAt(nchar - 2));
        c2 = alphabet.indexOf(password.charAt(nchar - 1));
        sum = 0;
        for (c3 = 0; c3 < 26; c3++)
            sum += data.get(c1, c2, c3);
        if (sum == 0) {
            break; // exit while loop
        }
        pik = ran.nextDouble();
        ranno = (long) (pik * sum);
        sum = 0;
        for (c3 = 0; c3 < 26; c3++) {
            sum += data.get(c1, c2, c3);
            if (sum > ranno) {
                password.append(alphabet.charAt(c3));
                c3 = 26; // break for loop
            } // if sum
        } // for c3
        nchar++;
    } // while nchar
    return password.toString();
}

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From source file:com.btisystems.pronx.ems.AbstractMibCompiler.java

/**
 * Capitalise first character of the specified name.
 *
 * @param name the name/*from   w  ww.j  a  va  2  s . co m*/
 * @return the string
 */
protected final String capitalizeFirstCharacter(final String name) {
    final StringBuilder sb = new StringBuilder(name);
    final char firstChar = sb.charAt(0);
    sb.setCharAt(0, Character.toUpperCase(firstChar));
    return sb.toString();
}

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From source file:cn.webwheel.DefaultMain.java

/**
 * Wrap exception to a json object and return it to client.
 * <p>/*from ww  w.  j a va2  s.c o m*/
 * <b>json object format:</b><br/>
 * <p><blockquote><pre>
 *     {
 *         "msg": "the exception's message",
 *         "stackTrace":[
 *             "exception's stack trace1",
 *             "exception's stack trace2",
 *             "exception's stack trace3",
 *             ....
 *         ]
 *     }
 * </pre></blockquote></p>
 */
public Object executeActionError(WebContext ctx, ActionInfo ai, Object action, Throwable e) throws Throwable {
    if (e instanceof LogicException) {
        return ((LogicException) e).getResult();
    }
    Logger.getLogger(DefaultMain.class.getName()).log(Level.SEVERE, "action execution error", e);
    StringBuilder sb = new StringBuilder();
    sb.append("{\n");
    String s;
    try {
        s = JsonResult.objectMapper.writeValueAsString(e.toString());
    } catch (IOException e1) {
        s = "\"" + e.toString().replace("\"", "'") + "\"";
    }
    sb.append("    \"msg\" : " + s + ",\n");
    sb.append("    \"stackTrace\" : [");
    StringWriter sw = new StringWriter();
    e.printStackTrace(new PrintWriter(sw));
    String[] ss = sw.toString().split("\r\n");
    for (int i = 1; i < ss.length; i++) {
        if (sb.charAt(sb.length() - 1) != '[') {
            sb.append(',');
        }
        sb.append("\n        ").append(JsonResult.objectMapper.writeValueAsString(ss[i]));
    }
    sb.append("\n    ]\n");
    sb.append("}");
    HttpServletResponse response = ctx.getResponse();
    if (JsonResult.defWrapMultipart && ServletFileUpload.isMultipartContent(ctx.getRequest())
            && !"XMLHttpRequest".equals(ctx.getRequest().getHeader("X-Requested-With"))) {
        response.setContentType("text/html");
        sb.insert(0, "<textarea>\n");
        sb.append("\n</textarea>");
    } else {
        response.setContentType("application/json");
    }
    response.setCharacterEncoding("utf-8");
    response.setHeader("Cache-Control", "no-cache");
    response.setHeader("Pragma", "no-cache");
    response.setHeader("Expires", "-1");
    response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
    response.getWriter().write(sb.toString());
    return EmptyResult.inst;
}

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From source file:github.madmarty.madsonic.util.Util.java

public static String getRestUrl(Context context, String method, SharedPreferences prefs, int instance) {
    StringBuilder builder = new StringBuilder();

    String serverUrl = prefs.getString(Constants.PREFERENCES_KEY_SERVER_URL + instance, null);
    String username = prefs.getString(Constants.PREFERENCES_KEY_USERNAME + instance, null);
    String password = prefs.getString(Constants.PREFERENCES_KEY_PASSWORD + instance, null);

    // Slightly obfuscate password
    password = "enc:" + Util.utf8HexEncode(password);

    builder.append(serverUrl);//w w  w .jav  a  2s .  c  o  m
    if (builder.charAt(builder.length() - 1) != '/') {
        builder.append("/");
    }
    builder.append("rest/").append(method).append(".view");
    builder.append("?u=").append(username);
    builder.append("&p=").append(password);
    builder.append("&v=").append(Constants.REST_PROTOCOL_VERSION);
    builder.append("&c=").append(Constants.REST_CLIENT_ID);

    return builder.toString();
}

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From source file:net.sf.jabref.importer.fileformat.BibtexParser.java

/**
 * returns a new <code>StringBuilder</code> which corresponds to <code>toRemove</code> without whitespaces
 *
 * @param toRemove/*from w  ww.ja  v  a 2 s .c om*/
 * @return
 */
private StringBuilder removeWhitespaces(StringBuilder toRemove) {
    StringBuilder result = new StringBuilder();
    char current;
    for (int i = 0; i < toRemove.length(); ++i) {
        current = toRemove.charAt(i);
        if (!Character.isWhitespace(current)) {
            result.append(current);
        }
    }
    return result;
}

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From source file:org.apache.olingo.client.core.uri.URIBuilderImpl.java

@Override
public URI build() {
    final StringBuilder segmentsBuilder = new StringBuilder();

    for (Segment seg : segments) {
        if (segmentsBuilder.length() > 0 && seg.getType() != SegmentType.KEY) {
            switch (seg.getType()) {
            case BOUND_OPERATION:
                segmentsBuilder.append(getBoundOperationSeparator());
                break;
            case BOUND_ACTION:
                segmentsBuilder.append(getBoundOperationSeparator());
                break;
            default:
                if (segmentsBuilder.length() > 0
                        && segmentsBuilder.charAt(segmentsBuilder.length() - 1) != '/') {
                    segmentsBuilder.append('/');
                }//from w  w  w.  j  ava2  s. com
            }
        }

        if (seg.getType() == SegmentType.ENTITY) {
            segmentsBuilder.append(seg.getType().getValue());
        } else {
            segmentsBuilder.append(seg.getValue());
        }
        if (seg.getType() == SegmentType.BOUND_OPERATION || seg.getType() == SegmentType.UNBOUND_OPERATION) {
            segmentsBuilder.append(getOperationInvokeMarker());
        }
    }

    try {
        if ((queryOptions.size() + parameters.size()) > 0) {
            segmentsBuilder.append("?");
            List<NameValuePair> list1 = new LinkedList<NameValuePair>();
            for (Map.Entry<String, String> option : queryOptions.entrySet()) {
                list1.add(new BasicNameValuePair("$" + option.getKey(), option.getValue()));
            }
            for (Map.Entry<String, String> parameter : parameters.entrySet()) {
                list1.add(new BasicNameValuePair("@" + parameter.getKey(), parameter.getValue()));
            }

            // don't use UriBuilder.build():
            // it will try to call URLEncodedUtils.format(Iterable<>,Charset) method,
            // which works in desktop java application, however, throws NoSuchMethodError in android OS,
            // so here manually construct the URL by its overload URLEncodedUtils.format(List<>,String).
            final String queryStr = encodeQueryParameter(list1);
            segmentsBuilder.append(queryStr);
        }

        return URI.create(segmentsBuilder.toString());
    } catch (IllegalArgumentException e) {
        throw new IllegalArgumentException("Could not build valid URI", e);
    }
}

---

From source file:net.yacy.search.query.QueryParams.java

/**
 * Remove from the URL builder any query modifiers with the same name that the new modifier 
 * @param sb/*from   w  ww  .  ja  va 2  s.  c o  m*/
 *            a StringBuilder holding the search URL navigation being built.
 *            Must not be null and contain the URL base and the query string
 *            with its eventual modifiers
 * @param newModifier
 *            a new modifier of form key:value. Must not be null.
 */
protected static void removeOldModifiersFromNavUrl(final StringBuilder sb, final String newModifier) {
    int nmpi = newModifier.indexOf(":");
    if (nmpi > 0) {
        final String newModifierKey = newModifier.substring(0, nmpi) + ":";
        int sameModifierIndex = sb.indexOf(newModifierKey);
        while (sameModifierIndex > 0) {
            final int spaceModifierIndex = sb.indexOf(" ", sameModifierIndex);
            if (spaceModifierIndex > sameModifierIndex) {
                /* There are other modifiers after the matching one : we only remove the old matching modifier */
                sb.delete(sameModifierIndex, spaceModifierIndex + 1);
            } else {
                /* The matching modifier is the last : we truncate the builder */
                sb.setLength(sameModifierIndex);
            }
            sameModifierIndex = sb.indexOf(newModifierKey);
        }
        if (sb.charAt(sb.length() - 1) == '+') {
            sb.setLength(sb.length() - 1);
        }
        if (sb.charAt(sb.length() - 1) == ' ') {
            sb.setLength(sb.length() - 1);
        }
    }
}

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From source file:com.android.calendar.alerts.AlarmScheduler.java

/**
 * Queries for all the reminders of the events in the instancesCursor, and schedules
 * the alarm for the next upcoming reminder.
 *//*w  w  w. ja  v a2  s  . c o m*/
private static void queryNextReminderAndSchedule(Cursor instancesCursor, Context context,
        ContentResolver contentResolver, AlarmManagerInterface alarmManager, int batchSize,
        long currentMillis) {
    if (AlertService.DEBUG) {
        int eventCount = instancesCursor.getCount();
        if (eventCount == 0) {
            Log.d(TAG, "No events found starting within 1 week.");
        } else {
            Log.d(TAG, "Query result count for events starting within 1 week: " + eventCount);
        }
    }

    // Put query results of all events starting within some interval into map of event ID to
    // local start time.
    Map<Integer, List<Long>> eventMap = new HashMap<Integer, List<Long>>();
    Time timeObj = new Time();
    long nextAlarmTime = Long.MAX_VALUE;
    int nextAlarmEventId = 0;
    instancesCursor.moveToPosition(-1);
    while (!instancesCursor.isAfterLast()) {
        int index = 0;
        eventMap.clear();
        StringBuilder eventIdsForQuery = new StringBuilder();
        eventIdsForQuery.append('(');
        while (index++ < batchSize && instancesCursor.moveToNext()) {
            int eventId = instancesCursor.getInt(INSTANCES_INDEX_EVENTID);
            long begin = instancesCursor.getLong(INSTANCES_INDEX_BEGIN);
            boolean allday = instancesCursor.getInt(INSTANCES_INDEX_ALL_DAY) != 0;
            long localStartTime;
            if (allday) {
                // Adjust allday to local time.
                localStartTime = Utils.convertAlldayUtcToLocal(timeObj, begin, Time.getCurrentTimezone());
            } else {
                localStartTime = begin;
            }
            List<Long> startTimes = eventMap.get(eventId);
            if (startTimes == null) {
                startTimes = new ArrayList<Long>();
                eventMap.put(eventId, startTimes);
                eventIdsForQuery.append(eventId);
                eventIdsForQuery.append(",");
            }
            startTimes.add(localStartTime);

            // Log for debugging.
            if (Log.isLoggable(TAG, Log.DEBUG)) {
                timeObj.set(localStartTime);
                StringBuilder msg = new StringBuilder();
                msg.append("Events cursor result -- eventId:").append(eventId);
                msg.append(", allDay:").append(allday);
                msg.append(", start:").append(localStartTime);
                msg.append(" (").append(timeObj.format("%a, %b %d, %Y %I:%M%P")).append(")");
                Log.d(TAG, msg.toString());
            }
        }
        if (eventIdsForQuery.charAt(eventIdsForQuery.length() - 1) == ',') {
            eventIdsForQuery.deleteCharAt(eventIdsForQuery.length() - 1);
        }
        eventIdsForQuery.append(')');

        // Query the reminders table for the events found.
        Cursor cursor = null;
        try {
            cursor = contentResolver.query(Reminders.CONTENT_URI, REMINDERS_PROJECTION,
                    REMINDERS_WHERE + eventIdsForQuery, null, null);

            // Process the reminders query results to find the next reminder time.
            cursor.moveToPosition(-1);
            while (cursor.moveToNext()) {
                int eventId = cursor.getInt(REMINDERS_INDEX_EVENT_ID);
                int reminderMinutes = cursor.getInt(REMINDERS_INDEX_MINUTES);
                List<Long> startTimes = eventMap.get(eventId);
                if (startTimes != null) {
                    for (Long startTime : startTimes) {
                        long alarmTime = startTime - reminderMinutes * DateUtils.MINUTE_IN_MILLIS;
                        if (alarmTime > currentMillis && alarmTime < nextAlarmTime) {
                            nextAlarmTime = alarmTime;
                            nextAlarmEventId = eventId;
                        }

                        if (Log.isLoggable(TAG, Log.DEBUG)) {
                            timeObj.set(alarmTime);
                            StringBuilder msg = new StringBuilder();
                            msg.append("Reminders cursor result -- eventId:").append(eventId);
                            msg.append(", startTime:").append(startTime);
                            msg.append(", minutes:").append(reminderMinutes);
                            msg.append(", alarmTime:").append(alarmTime);
                            msg.append(" (").append(timeObj.format("%a, %b %d, %Y %I:%M%P")).append(")");
                            Log.d(TAG, msg.toString());
                        }
                    }
                }
            }
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
    }

    // Schedule the alarm for the next reminder time.
    if (nextAlarmTime < Long.MAX_VALUE) {
        scheduleAlarm(context, nextAlarmEventId, nextAlarmTime, currentMillis, alarmManager);
    }
}

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From source file:com.github.helenusdriver.driver.impl.StatementImpl.java

/**
 * {@inheritDoc}/*from  w w w . ja v a 2 s .  c o m*/
 *
 * @author paouelle
 *
 * @see com.github.helenusdriver.driver.GenericStatement#getQueryString()
 */
@Override
public String getQueryString() {
    if (dirty || (cache == null)) {
        final StringBuilder sb = buildQueryString();

        if (sb == null) {
            this.cache = null;
        } else {
            // Use the same test that String#trim() uses to determine
            // if a character is a whitespace character.
            int l = sb.length();

            while (l > 0 && sb.charAt(l - 1) <= ' ') {
                l -= 1;
            }
            if (l != sb.length()) {
                sb.setLength(l);
            }
            if (l == 0 || sb.charAt(l - 1) != ';') {
                sb.append(';');
            }
            this.cache = sb;
        }
        this.dirty = false;
    }
    return (cache != null) ? cache.toString() : null;
}

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