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:FastParser.java

/**
 * Parse the long at index from value. The long is assumed to run until
 * the end of the String./*from   w  w  w .j  a  va2 s  .co m*/
 */
public static long parseLong(String value, int index) {
    char c = value.charAt(index++);
    long ans;
    if (c == '-')
        ans = -(value.charAt(index++) - '0');
    else
        ans = c - '0';
    int n = value.length();
    for (; index < n;) {
        ans = ans * 10 + (value.charAt(index++) - '0');
    }
    return ans;
}

From source file:Main.java

public static char getCharForMorse(String morse) {
    String out = morseToCharTable.get(morse);
    if (out != null) {
        return out.charAt(0);
    } else {/*from  w  w  w  .j av a  2s . c o  m*/
        return '?';
    }
}

From source file:Main.java

public static boolean checkIfClassHasMatchingGetMethod(Class<?> clazz, String columnname) {
    String neededMethodename = "get" + (Character.toUpperCase(columnname.charAt(0)) + columnname.substring(1));
    for (Method aMethod : clazz.getMethods()) {
        if (neededMethodename.equals(aMethod.getName())) {
            return true;
        }//from  w w  w  .j  a v a  2 s .  com
    }
    return false;
}

From source file:Main.java

public static int prefixCodedToInt(final String prefixCoded) {
    final int shift = prefixCoded.charAt(0) - SHIFT_START_INT;
    if (shift > 31 || shift < 0)
        throw new NumberFormatException(
                "Invalid shift value in prefixCoded string (is encoded value really an INT?)");
    int sortableBits = 0;
    for (int i = 1, len = prefixCoded.length(); i < len; i++) {
        sortableBits <<= 7;/*ww w .  j a v a  2s. c om*/
        final char ch = prefixCoded.charAt(i);
        if (ch > 0x7f) {
            throw new NumberFormatException("Invalid prefixCoded numerical value representation (char "
                    + Integer.toHexString(ch) + " at position " + i + " is invalid)");
        }
        sortableBits |= ch;
    }
    return (sortableBits << shift) ^ 0x80000000;
}

From source file:Main.java

public static String removeNullCharAtEnd(String st) {
    int index = st.length() - 1;
    char c = st.charAt(index);
    if (c == '\u0000') {
        return st.substring(0, index);
    }/*from   w w w.  ja  v a2s.co  m*/
    return st;
}

From source file:Main.java

private static String toIdName(String fieldName) {
    String idName = String.valueOf(Character.toLowerCase(fieldName.charAt(1)));

    for (int i = 2, length = fieldName.length(); i < length; ++i) {
        char c = fieldName.charAt(i);
        if (Character.isUpperCase(c)) {
            idName = idName + ID_SEPARATOR + Character.toLowerCase(c);
        } else {/*from w  w  w .  j  a  v  a  2  s  .  c o m*/
            idName += c;
        }
    }

    return idName;
}

From source file:Main.java

public static String createNewPrivateFolder(String folderName) {
    String folderPathString = getSDPath() + mPrivatePath + folderName;
    if (folderPathString.charAt(folderPathString.length() - 1) != '/') {
        folderPathString += '/';
    }//from w ww. ja v a  2 s .  com
    File path = new File(folderPathString);
    if (!path.exists()) {
        path.mkdir();
    }
    return folderPathString;
}

From source file:Main.java

/**
 * test for numbers in a given string//from   w ww  . ja va  2 s  . c o  m
 *
 * @param String text - text for searching
 * @return boolean - true: text contains numbers, false: text not contains numbers
 */
public static boolean containsNumbers(String text) {
    for (int i = 0; i < text.length(); i++) {
        if (((int) text.charAt(i) >= 48) && ((int) text.charAt(i) <= 57)) {
            return true;
        }
    }
    return false;
}

From source file:Main.java

private static int getStartIndex(String term) {
    int length = term.length();
    int index = 0;
    while (term.charAt(index) == '*') {
        ++index;//from  w w  w.j a v a 2 s. c o m
        if (index >= length) {
            break;
        }
    }
    return index;
}

From source file:Main.java

public static boolean onlyContainsWhitespace(String src) {
    for (int i = 0; i < src.length(); i++) {
        final char c = src.charAt(i);
        if (WHITESPACE.indexOf(c) == -1) { //found a character which isn't whitespace
            return false;
        }/*from  w w w  .j  av  a  2 s.  c om*/
    }
    return true;
}