# EspressoOptional Summary:[Methods](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#inhmethods)\|[\[Expand All\]](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#) # EspressoOptional | This package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack). We recommend using the AndroidX libraries in all new projects. You should also consider[migrating](https://developer.android.com/jetpack/androidx/migrate)existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library[class mappings](https://developer.android.com/jetpack/androidx/migrate/class-mappings). ` public final class EspressoOptional ` ` extends `[Object](https://developer.android.com/reference/java/lang/Object.html)` `` ` |---|----------------------------------------------------------| | [java.lang.Object](https://developer.android.com/reference/java/lang/Object.html) || | ↳ | android.support.test.espresso.util.EspressoOptional\ |
*** ** * ** *** This class is a wrapper around[Optional](https://developer.android.com/reference/com/google/common/base/Optional)in order to avoid having public references to Guava API. **See also:** - [Optional](https://developer.android.com/reference/com/google/common/base/Optional) ## Summary | ### Public methods || |------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` static `[EspressoOptional](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional)`` | ` `[absent](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#absent())`() ` | | ` `[Set](https://developer.android.com/reference/java/util/Set.html)`` | ` `[asSet](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#asSet())`() ` | | ` boolean` | ` `[equals](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#equals(java.lang.Object))`(`[Object](https://developer.android.com/reference/java/lang/Object.html)` object) ` | | ` static `[EspressoOptional](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional)`` | ` `[fromNullable](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#fromNullable(T))`(T nullableReference) ` | | ` T` | ` `[get](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#get())`() ` | | ` int` | ` `[hashCode](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#hashCode())`() ` | | ` boolean` | ` `[isPresent](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#isPresent())`() ` | | ` static `[EspressoOptional](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional)`` | ` `[of](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#of(T))`(T reference) ` | | ` T` | ` `[or](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#or(com.google.common.base.Supplier))`(Supplier supplier) ` | | ` T` | ` `[or](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#or(T))`(T defaultValue) ` | | ` Optional` | ` `[or](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#or(com.google.common.base.Optional))`(Optional secondChoice) ` | | ` T` | ` `[orNull](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#orNull())`() ` | | ` static `[Iterable](https://developer.android.com/reference/java/lang/Iterable.html)`` | ` `[presentInstances](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#presentInstances(java.lang.Iterable>))`(`[Iterable](https://developer.android.com/reference/java/lang/Iterable.html)`> optionals) ` | | ` `[String](https://developer.android.com/reference/java/lang/String.html) | ` `[toString](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#toString())`() ` | | ` Optional` | ` `[transform](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#transform(com.google.common.base.Function))`(Function function) ` | | ### Inherited methods | |-----------------------|---| | [![](https://developer.android.com/static/assets/images/styles/disclosure_down.png)](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional#)From class` `[java.lang.Object](https://developer.android.com/reference/java/lang/Object.html)` ` |-------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------| | ` `[Object](https://developer.android.com/reference/java/lang/Object.html) | ` clone() ` | | ` boolean` | ` equals(`[Object](https://developer.android.com/reference/java/lang/Object.html)` arg0) ` | | ` void` | ` finalize() ` | | ` final `[Class](https://developer.android.com/reference/java/lang/Class.html)`` | ` getClass() ` | | ` int` | ` hashCode() ` | | ` final void` | ` notify() ` | | ` final void` | ` notifyAll() ` | | ` `[String](https://developer.android.com/reference/java/lang/String.html) | ` toString() ` | | ` final void` | ` wait(long arg0, int arg1) ` | | ` final void` | ` wait(long arg0) ` | | ` final void` | ` wait() ` | || ## Public methods ### absent ``` EspressoOptional absent () ```

| Returns || |----------------------------------------------------------------------------------------------------------------------|--------| | [EspressoOptional](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional)`` |
| ### asSet ``` Set asSet () ```

| Returns || |------------------------------------------------------------------------|--------| | [Set](https://developer.android.com/reference/java/util/Set.html)`` |
| ### equals ``` boolean equals (Object object) ```

| Parameters || |----------|-----------------| | `object` | `Object`
| | Returns || |-----------|--------| | `boolean` |
| ### fromNullable ``` EspressoOptional fromNullable (T nullableReference) ```

| Parameters || |---------------------|------------| | `nullableReference` | `T`
| | Returns || |----------------------------------------------------------------------------------------------------------------------|--------| | [EspressoOptional](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional)`` |
| ### get ``` T get () ```

| Returns || |-----|--------| | `T` |
| ### hashCode ``` int hashCode () ```

| Returns || |-------|--------| | `int` |
| ### isPresent ``` boolean isPresent () ```

| Returns || |-----------|--------| | `boolean` |
| ### of ``` EspressoOptional of (T reference) ```

| Parameters || |-------------|------------| | `reference` | `T`
| | Returns || |----------------------------------------------------------------------------------------------------------------------|--------| | [EspressoOptional](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional)`` |
| ### or ``` T or (Supplier supplier) ```

| Parameters || |------------|-------------------| | `supplier` | `Supplier`
| | Returns || |-----|--------| | `T` |
| ### or ``` T or (T defaultValue) ```

| Parameters || |----------------|------------| | `defaultValue` | `T`
| | Returns || |-----|--------| | `T` |
| ### or ``` Optional or (Optional secondChoice) ```

| Parameters || |----------------|-------------------| | `secondChoice` | `Optional`
| | Returns || |---------------|--------| | `Optional` |
| ### orNull ``` T orNull () ```

| Returns || |-----|--------| | `T` |
| ### presentInstances ``` Iterable presentInstances (Iterable> optionals) ```

| Parameters || |-------------|-------------------| | `optionals` | `Iterable`
| | Returns || |----------------------------------------------------------------------------------|--------| | [Iterable](https://developer.android.com/reference/java/lang/Iterable.html)`` |
| ### toString ``` String toString () ```

| Returns || |-------------------------------------------------------------------------|--------| | [String](https://developer.android.com/reference/java/lang/String.html) |
| ### transform ``` Optional transform (Function function) ```

| Parameters || |------------|-------------------| | `function` | `Function`
| | Returns || |---------------|--------| | `Optional` |
| - ## Classes - [ActivityLifecycles](https://developer.android.com/reference/android/support/test/espresso/util/ActivityLifecycles) - [EspressoOptional](https://developer.android.com/reference/android/support/test/espresso/util/EspressoOptional) - [HumanReadables](https://developer.android.com/reference/android/support/test/espresso/util/HumanReadables) - [TreeIterables](https://developer.android.com/reference/android/support/test/espresso/util/TreeIterables) - [TreeIterables.ViewAndDistance](https://developer.android.com/reference/android/support/test/espresso/util/TreeIterables.ViewAndDistance)