Android Utililty Methods String Case Convert

List of utility methods to do String Case Convert

  1. HOME
  2. Android
  3. S
  4. String Case Convert

Description

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

Method

StringcamelString(String str, boolean firstCharacterUppercase)
camel String 
if (str == null) {
    return null;
StringBuffer sb = new StringBuffer();
boolean nextUpperCase = false;
for (int i = 0; i < str.length(); i++) {
    char c = str.charAt(i);
    if (isWordSeparator(c)) {
...
StringfirstByteToLower(String instring)
first Byte To Lower 
return instring.substring(0, 1).toLowerCase()
        + instring.substring(1, instring.length());
Stringcapitalize(String plainMessage, char letter)
Replace all occurrences of letter in plainMessage with toUpperCase(letter) 
StringBuffer message = new StringBuffer(plainMessage);
for (int i = 0; i < plainMessage.length(); i++) {
    char c = plainMessage.charAt(i);
    if (Character.isLetter(c)) {
        if (Character.toUpperCase(c) == Character
                .toUpperCase(letter)) {
            message.setCharAt(i, Character.toUpperCase(c));
return message.toString();
Stringuncapitalize(String capitalizedMessage, char letter)
Replace all occurrences of letter in capitalizedMessage with toLowerCase(letter) 
StringBuffer message = new StringBuffer(capitalizedMessage);
for (int i = 0; i < message.length(); i++) {
    char c = message.charAt(i);
    if (Character.isLetter(c)) {
        if (Character.toLowerCase(c) == Character
                .toLowerCase(letter)) {
            message.setCharAt(i, Character.toLowerCase(c));
return message.toString();
chartoUpper(char ch)
to Upper 
if (inRange11(ch, 'a', 'z')) {
    return (char) (ch - 'a' + 'A');
return ch;
StringtoLowerSubset(String source, char substitute)
Returns a string with non alphanumeric chars converted to the substitute character. 
int len = source.length();
StringBuffer sb = new StringBuffer(len);
char ch;
for (int i = 0; i < len; i++) {
    ch = source.charAt(i);
    if (!Character.isLetterOrDigit(ch)) {
        sb.append(substitute);
    } else if ((i == 0) && Character.isDigit(ch)) {
...
StringUpperCase(String str)
Upper Case 
int len = str.length();
String result = "";
for (int i = 0; i < len; i++) {
    String subStr = str.substring(i, i + 1);
    char subChar = str.charAt(i);
    if (subChar >= 'a' && subChar <= 'z')
        result += subStr.toUpperCase();
    else
...
Stringcapitalize(String s)
capitalize 
if (s == null || s.length() == 0) {
    return "";
char first = s.charAt(0);
if (Character.isUpperCase(first)) {
    return s;
} else {
    return Character.toUpperCase(first) + s.substring(1);
...
Stringcapitalize(final String str)
capitalize 
final char[] buffer = str.toCharArray();
boolean capitalizeNext = true;
for (int i = 0; i < buffer.length; i++) {
    final char ch = buffer[i];
    if (capitalizeNext) {
        buffer[i] = Character.toTitleCase(ch);
        capitalizeNext = false;
return new String(buffer);
CharSequencecapitalizeFirst(CharSequence movementTitle)
capitalize First 
if (TextUtils.isEmpty(movementTitle))
    return movementTitle;
return String.valueOf(movementTitle.charAt(0)).toUpperCase(
        Locale.ENGLISH)
        + movementTitle.toString().substring(1)
                .toLowerCase(Locale.ENGLISH);