> For the complete documentation index, see [llms.txt](https://boxlang.ortusbooks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://boxlang.ortusbooks.com/boxlang-language/reference/built-in-functions/string/ucfirst.md).

# UCFirst

Transform the first letter of a string to uppercase or the first letter of each word, and optionally lowercase uppercase characters.

## Method Signature

```
UCFirst(string=[string], doAll=[boolean], doLowerIfAllUppercase=[boolean])
```

### Arguments

| Argument                | Type      | Required | Description                                                                 | Default |
| ----------------------- | --------- | -------- | --------------------------------------------------------------------------- | ------- |
| `string`                | `string`  | `true`   | The string to transform.                                                    |         |
| `doAll`                 | `boolean` | `false`  | Boolean flag indicating whether to transform the first letter of each word. | `false` |
| `doLowerIfAllUppercase` | `boolean` | `false`  | Boolean flag indicating whether to lowercase uppercase characters.          | `false` |

## Examples

### Basic usage

Capitalizes the first character of the first word only.

[Run Example](https://try.boxlang.io/?code=eJwrTXbLLCou0VBQykjNyclXKM8vyklRVFLQtOYCAIPJCHg%3D)

```java
ucFirst( "hello world!" );

```

Result: Hello world!

### Capitalize all the words in string

Using the optional doAll parameter capitalizes the first character of all words. Word separators are: whitespace, period, parenthesis, or dash.

```java
ucFirst( "boxlang.ortusbooks.com is your (everyone's) resource for BX-related documentation!", true );

```

Result: boxlang.ortusbooks.com Is Your (everyone's) Resource For BX-related Documentation!

### Handling of strings in all uppercase

Using the optional doLowerIfAllUppercase parameter allows for intelligent capitalization of words in all caps.

```java
ucFirst( "boxlang.ortusbooks.com YOUR (EVERYONE'S) RESOURCE FOR BX-related DOCUMENTATION!", true, true );

```

Result: boxlang.ortusbooks.com Your (everyone's) Resource For BX-related Documentation!

### Additional Examples

```java
string = "submitting bugs and feature requests via our online system";
dump( UcFirst( string, false, false ) );
dump( UcFirst( string, true, false ) );

```

## Related

* [Ascii](/boxlang-language/reference/built-in-functions/string/ascii.md)
* [CamelCase](/boxlang-language/reference/built-in-functions/string/camelcase.md)
* [Char](/boxlang-language/reference/built-in-functions/string/char.md)
* [CharsetDecode](/boxlang-language/reference/built-in-functions/string/charsetdecode.md)
* [CharsetEncode](/boxlang-language/reference/built-in-functions/string/charsetencode.md)
* [Compare](/boxlang-language/reference/built-in-functions/string/compare.md)
* [CompareNoCase](/boxlang-language/reference/built-in-functions/string/comparenocase.md)
* [Find](/boxlang-language/reference/built-in-functions/string/find.md)
* [FindNoCase](/boxlang-language/reference/built-in-functions/string/findnocase.md)
* [FindOneOf](/boxlang-language/reference/built-in-functions/string/findoneof.md)
* [Insert](/boxlang-language/reference/built-in-functions/string/insert.md)
* [JSStringFormat](/boxlang-language/reference/built-in-functions/string/jsstringformat.md)
* [Justify](/boxlang-language/reference/built-in-functions/string/justify.md)
* [KebabCase](/boxlang-language/reference/built-in-functions/string/kebabcase.md)
* [LCase](/boxlang-language/reference/built-in-functions/string/lcase.md)
* [Left](/boxlang-language/reference/built-in-functions/string/left.md)
* [ListReduce](/boxlang-language/reference/built-in-functions/string/listreduce.md)
* [LJustify](/boxlang-language/reference/built-in-functions/string/ljustify.md)
* [LTrim](/boxlang-language/reference/built-in-functions/string/ltrim.md)
* [Mid](/boxlang-language/reference/built-in-functions/string/mid.md)
* [ParagraphFormat](/boxlang-language/reference/built-in-functions/string/paragraphformat.md)
* [PascalCase](/boxlang-language/reference/built-in-functions/string/pascalcase.md)
* [QueryStringToStruct](/boxlang-language/reference/built-in-functions/string/querystringtostruct.md)
* [ReEscape](/boxlang-language/reference/built-in-functions/string/reescape.md)
* [ReFind](/boxlang-language/reference/built-in-functions/string/refind.md)
* [reFindNoCase](/boxlang-language/reference/built-in-functions/string/refindnocase.md)
* [ReMatch](/boxlang-language/reference/built-in-functions/string/rematch.md)
* [reMatchNoCase](/boxlang-language/reference/built-in-functions/string/rematchnocase.md)
* [RemoveChars](/boxlang-language/reference/built-in-functions/string/removechars.md)
* [RepeatString](/boxlang-language/reference/built-in-functions/string/repeatstring.md)
* [Replace](/boxlang-language/reference/built-in-functions/string/replace.md)
* [ReplaceList](/boxlang-language/reference/built-in-functions/string/replacelist.md)
* [ReplaceListNoCase](/boxlang-language/reference/built-in-functions/string/replacelistnocase.md)
* [ReplaceNoCase](/boxlang-language/reference/built-in-functions/string/replacenocase.md)
* [ReReplace](/boxlang-language/reference/built-in-functions/string/rereplace.md)
* [reReplaceNoCase](/boxlang-language/reference/built-in-functions/string/rereplacenocase.md)
* [Reverse](/boxlang-language/reference/built-in-functions/string/reverse.md)
* [Right](/boxlang-language/reference/built-in-functions/string/right.md)
* [RJustify](/boxlang-language/reference/built-in-functions/string/rjustify.md)
* [RTrim](/boxlang-language/reference/built-in-functions/string/rtrim.md)
* [Slugify](/boxlang-language/reference/built-in-functions/string/slugify.md)
* [SnakeCase](/boxlang-language/reference/built-in-functions/string/snakecase.md)
* [SpanExcluding](/boxlang-language/reference/built-in-functions/string/spanexcluding.md)
* [SpanIncluding](/boxlang-language/reference/built-in-functions/string/spanincluding.md)
* [SQLPrettify](/boxlang-language/reference/built-in-functions/string/sqlprettify.md)
* [StringBind](/boxlang-language/reference/built-in-functions/string/stringbind.md)
* [StringEach](/boxlang-language/reference/built-in-functions/string/stringeach.md)
* [StringEvery](/boxlang-language/reference/built-in-functions/string/stringevery.md)
* [StringFilter](/boxlang-language/reference/built-in-functions/string/stringfilter.md)
* [StringMap](/boxlang-language/reference/built-in-functions/string/stringmap.md)
* [StringReduce](/boxlang-language/reference/built-in-functions/string/stringreduce.md)
* [StringReduceRight](/boxlang-language/reference/built-in-functions/string/stringreduceright.md)
* [StringSome](/boxlang-language/reference/built-in-functions/string/stringsome.md)
* [StringSort](/boxlang-language/reference/built-in-functions/string/stringsort.md)
* [StripCR](/boxlang-language/reference/built-in-functions/string/stripcr.md)
* [Trim](/boxlang-language/reference/built-in-functions/string/trim.md)
* [TrueFalseFormat](/boxlang-language/reference/built-in-functions/string/truefalseformat.md)
* [UCase](/boxlang-language/reference/built-in-functions/string/ucase.md)
* [Val](/boxlang-language/reference/built-in-functions/string/val.md)
* [Wrap](/boxlang-language/reference/built-in-functions/string/wrap.md)
* [YesNoFormat](/boxlang-language/reference/built-in-functions/string/yesnoformat.md)


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