Added in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Nested Classes](https://developer.android.com/reference/android/icu/text/CaseMap#nestedclasses) \| [Methods](https://developer.android.com/reference/android/icu/text/CaseMap#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/icu/text/CaseMap#inhmethods)

# CaseMap

*** ** * ** ***


`
public


abstract
class
CaseMap
`


`

extends https://developer.android.com/reference/java/lang/Object


`

`


`

|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | android.icu.text.CaseMap |

|---|
| Known direct subclasses [CaseMap.Fold](https://developer.android.com/reference/android/icu/text/CaseMap.Fold), [CaseMap.Lower](https://developer.android.com/reference/android/icu/text/CaseMap.Lower), [CaseMap.Title](https://developer.android.com/reference/android/icu/text/CaseMap.Title), [CaseMap.Upper](https://developer.android.com/reference/android/icu/text/CaseMap.Upper) |---|---| | [CaseMap.Fold](https://developer.android.com/reference/android/icu/text/CaseMap.Fold) | Case folding options and methods. | | [CaseMap.Lower](https://developer.android.com/reference/android/icu/text/CaseMap.Lower) | Lowercasing options and methods. | | [CaseMap.Title](https://developer.android.com/reference/android/icu/text/CaseMap.Title) | Titlecasing options and methods. | | [CaseMap.Upper](https://developer.android.com/reference/android/icu/text/CaseMap.Upper) | Uppercasing options and methods. | |

<br />

*** ** * ** ***

Low-level case mapping options and methods. Immutable.
"Setters" return instances with the union of the current and new options set.

This class is not intended for public subclassing.

## Summary

| ### Nested classes ||
|---|---|
| ` class` | `https://developer.android.com/reference/android/icu/text/CaseMap.Fold` Case folding options and methods. |
| ` class` | `https://developer.android.com/reference/android/icu/text/CaseMap.Lower` Lowercasing options and methods. |
| ` class` | `https://developer.android.com/reference/android/icu/text/CaseMap.Title` Titlecasing options and methods. |
| ` class` | `https://developer.android.com/reference/android/icu/text/CaseMap.Upper` Uppercasing options and methods. |

| ### Public methods ||
|---|---|
| ` static https://developer.android.com/reference/android/icu/text/CaseMap.Fold` | ` https://developer.android.com/reference/android/icu/text/CaseMap#fold()() ` |
| ` abstract https://developer.android.com/reference/android/icu/text/CaseMap` | ` https://developer.android.com/reference/android/icu/text/CaseMap#omitUnchangedText()() ` Returns an instance that behaves like this one but omits unchanged text when case-mapping with `https://developer.android.com/reference/android/icu/text/Edits`. |
| ` static https://developer.android.com/reference/android/icu/text/CaseMap.Lower` | ` https://developer.android.com/reference/android/icu/text/CaseMap#toLower()() ` |
| ` static https://developer.android.com/reference/android/icu/text/CaseMap.Title` | ` https://developer.android.com/reference/android/icu/text/CaseMap#toTitle()() ` |
| ` static https://developer.android.com/reference/android/icu/text/CaseMap.Upper` | ` https://developer.android.com/reference/android/icu/text/CaseMap#toUpper()() ` |

| ### Inherited methods |
|---|---|
| From class ` https://developer.android.com/reference/java/lang/Object ` |---|---| | ` https://developer.android.com/reference/java/lang/Object` | ` https://developer.android.com/reference/java/lang/Object#clone()() ` Creates and returns a copy of this object. | | ` boolean` | ` https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) ` Indicates whether some other object is "equal to" this one. | | ` void` | ` https://developer.android.com/reference/java/lang/Object#finalize()() ` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object. | | ` final https://developer.android.com/reference/java/lang/Class<?>` | ` https://developer.android.com/reference/java/lang/Object#getClass()() ` Returns the runtime class of this `Object`. | | ` int` | ` https://developer.android.com/reference/java/lang/Object#hashCode()() ` Returns a hash code value for the object. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#notify()() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#notifyAll()() ` Wakes up all threads that are waiting on this object's monitor. | | ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/java/lang/Object#toString()() ` Returns a string representation of the object. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(long timeoutMillis, int nanos) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait(long)(long timeoutMillis) ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed. | | ` final void` | ` https://developer.android.com/reference/java/lang/Object#wait()() ` Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*. | ||

## Public methods

### fold

Added in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public static CaseMap.Fold fold ()
```

<br />

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/icu/text/CaseMap.Fold` | Case folding object with default options. <br /> |

### omitUnchangedText

Added in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public abstract CaseMap omitUnchangedText ()
```

Returns an instance that behaves like this one but
omits unchanged text when case-mapping with `https://developer.android.com/reference/android/icu/text/Edits`.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/icu/text/CaseMap` | an options object with this option. <br /> |

### toLower

Added in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public static CaseMap.Lower toLower ()
```

<br />

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/icu/text/CaseMap.Lower` | Lowercasing object with default options. <br /> |

### toTitle

Added in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public static CaseMap.Title toTitle ()
```

<br />

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/icu/text/CaseMap.Title` | Titlecasing object with default options. <br /> |

### toUpper

Added in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public static CaseMap.Upper toUpper ()
```

<br />

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/android/icu/text/CaseMap.Upper` | Uppercasing object with default options. <br /> |