Example usage for java.lang String charAt

Introduction

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

Prototype

public char charAt(int index)

Source Link

Document

Returns the char value at the specified index.

Usage

From source file:com.epam.jdi.uitests.mobile.appium.driver.ScreenshotMaker.java

public static String getValidUrl(String logPath) {
    if (logPath == null || logPath.equals(""))
        return "";
    String result = logPath.replace("/", "\\");
    if (result.charAt(1) != ':')
        if (result.substring(0, 3).equals("..\\"))
            result = result.substring(2);
    if (result.charAt(0) != '\\')
        result = "\\" + result;
    if (result.charAt(result.length() - 1) != '\\')
        result = result + "\\";
    return StringUtils.correctPath(result);
}

From source file:Main.java

public static boolean isNumeric(Object obj) {
    if (obj == null) {
        return false;
    }/*from  w ww  .j  ava 2s  .c o  m*/
    String str = obj.toString();
    int sz = str.length();
    for (int i = 0; i < sz; i++) {
        if (!Character.isDigit(str.charAt(i))) {
            return false;
        }
    }
    return true;
}

From source file:Main.java

public static String escapeXml(String payload) {
    StringBuilder out = new StringBuilder();
    for (int i = 0; i < payload.length(); i++) {
        char c = payload.charAt(i);
        if ((c == 0x9) || (c == 0xA) || (c == 0xD) || ((c >= 0x20) && (c <= 0xD7FF))
                || ((c >= 0xE000) && (c <= 0xFFFD)) || ((c >= 0x10000) && (c <= 0x10FFFF)))
            out.append(c);/*  w  w w . jav  a  2 s  .  c o m*/
    }
    return out.toString();
}

From source file:Main.java

public static int APHash(String str) {
    int hash = 0;

    for (int i = 0; i < str.length(); i++) {
        hash ^= ((i & 1) == 0) ? ((hash << 7) ^ str.charAt(i) ^ (hash >> 3))
                : (~((hash << 11) ^ str.charAt(i) ^ (hash >> 5)));
    }/* www.  ja v  a  2  s .  c o m*/

    // return (hash & 0x7FFFFFFF);
    return hash;
}

From source file:Main.java

private static void frequenceyCount(String input) {
    Map<Character, Integer> hashCount = new HashMap<>();
    Character c;//from  w  w  w .j  av a2  s  .  c om
    for (int i = 0; i < input.length(); i++) {
        c = input.charAt(i);
        if (hashCount.get(c) != null) {
            hashCount.put(c, hashCount.get(c) + 1);
        } else {
            hashCount.put(c, 1);
        }
    }
    Iterator it = hashCount.entrySet().iterator();
    System.out.println("char : frequency");
    while (it.hasNext()) {
        Map.Entry pairs = (Map.Entry) it.next();
        System.out.println(pairs.getKey() + " : " + pairs.getValue());
        it.remove();
    }
}

From source file:com.marklogic.contentpump.utilities.XMLUtil.java

/**
 * Get valid element name from a given string
 * @param name//from   w w w .ja  v  a  2 s  . c o  m
 * @return
 */
public static String getValidName(String name) {
    StringBuilder validname = new StringBuilder();
    char ch = name.charAt(0);
    if (!XML11Char.isXML11NameStart(ch)) {
        LOG.warn("Prepend _ to " + name);
        validname.append("_");
    }
    for (int i = 0; i < name.length(); i++) {
        ch = name.charAt(i);
        if (!XML11Char.isXML11Name(ch)) {
            LOG.warn("Character " + ch + " in " + name + " is converted to _");
            validname.append("_");
        } else {
            validname.append(ch);
        }
    }

    return validname.toString();
}

From source file:Main.java

/**
 * capitalize first letter// w  w w .  j  a v  a 2 s. c  o  m
 *
 * <pre>
 * capitalizeFirstLetter(null)     =   null;
 * capitalizeFirstLetter("")       =   "";
 * capitalizeFirstLetter("2ab")    =   "2ab"
 * capitalizeFirstLetter("a")      =   "A"
 * capitalizeFirstLetter("ab")     =   "Ab"
 * capitalizeFirstLetter("Abc")    =   "Abc"
 * </pre>
 *
 * @param str
 * @return
 */
public static String capitalizeFirstLetter(String str) {
    if (isEmpty(str)) {
        return str;
    }

    char c = str.charAt(0);
    return (!Character.isLetter(c) || Character.isUpperCase(c)) ? str
            : new StringBuilder(str.length()).append(Character.toUpperCase(c)).append(str.substring(1))
                    .toString();
}

From source file:Main.java

public static String escape(String str) {
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < str.length(); i++) {
        char c = str.charAt(i);
        if (h.containsKey(c)) {
            sb.append(h.get(c));//from ww  w . ja v  a 2  s  . c om
        } else {
            sb.append(c);
        }
    }
    return sb.toString();
}

From source file:Main.java

private static boolean containsInvalidHostnameAsciiCodes(String hostnameAscii) {
    for (int i = 0; i < hostnameAscii.length(); i++) {
        char c = hostnameAscii.charAt(i);
        if (c <= '\u001f' || c >= '\u007f') {
            return true;
        }/*from  w w  w.j a va 2  s  . c  o  m*/
        if (" #%/:?@[\\]".indexOf(c) != -1) {
            return true;
        }
    }
    return false;
}

From source file:Main.java

public static String utf16to8(String str) {
    int i = 0, len = str.length(), c;
    String out = "";
    while (i < len) {
        c = str.charAt(i);
        if ((c >= 0x0001) && (c <= 0x007F)) {
            out += str.charAt(i);/* w  w  w  .ja  va2 s  . c o  m*/
        } else if (c > 0x07FF) {
            out += (char) (0xE0 | ((c >> 12) & 0x0F));
            out += (char) (0x80 | ((c >> 6) & 0x3F));
            out += (char) (0x80 | (c & 0x3F));
        } else {
            out += (char) (0xC0 | ((c >> 6) & 0x1F));
            out += (char) (0x80 | (c & 0x3F));
        }
        i++;
    }
    return out;
}