Android Utililty Methods String Search

List of utility methods to do String Search

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Description

The list of methods to do String Search are organized into topic(s).

Method

intsafeIndexOf(String s, String search)
safe Index Of 
final int i = s.indexOf(search);
if (i == -1) {
    return s.length();
return i;
intindexOf(String str, String searchStr)
index Of 
if (str == null || searchStr == null) {
    return -1;
return str.indexOf(searchStr);
intskipSpaces(String s, int start)
Skips any spaces at or after start and returns the index of first non-space character; 
int limit = s.length();
int i = start;
for (; i < limit; i++) {
    if (s.charAt(i) != ' ') {
        break;
return i;
...
intnestedIndexOf(final String s, final int startPos, final String open, final String close)
nested Index Of 
int depth = 0;
for (int i = startPos; i < s.length();) {
    if (s.startsWith(close, i)) {
        if (depth == 0) {
            return i;
        } else {
            --depth;
            i += close.length();
...
intfindFirstNotOf(String str, String chars)
find First Not Of 
return findOf(str, chars, 0, (str.length() - 1), 1, false);
intfindFirstOf(String str, String chars)
find First Of 
return findOf(str, chars, 0, (str.length() - 1), 1, true);
intfindLastNotOf(String str, String chars)
find Last Not Of 
return findOf(str, chars, (str.length() - 1), 0, -1, false);
intfindLastOf(String str, String chars)
find Last Of 
return findOf(str, chars, (str.length() - 1), 0, -1, true);
StringfirstCharUpper(String myString)
first Char Upper 
if (myString != null && myString.length() > 1) {
    char[] stringArray = myString.toCharArray();
    stringArray[0] = Character.toUpperCase(stringArray[0]);
    myString = new String(stringArray);
return myString;
intlastIndexNotOf(String str, String chars, int fromIndex)
Finds the last index in str of a character not in the characters in 'chars' (similar to ANSI string.find_last_not_of). 
fromIndex = Math.min(fromIndex, str.length() - 1);
for (int pos = fromIndex; pos >= 0; pos--) {
    if (chars.indexOf(str.charAt(pos)) < 0) {
        return pos;
return -1;