Added in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Ctors](https://developer.android.com/reference/java/security/cert/CollectionCertStoreParameters#pubctors) \| [Methods](https://developer.android.com/reference/java/security/cert/CollectionCertStoreParameters#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/java/security/cert/CollectionCertStoreParameters#inhmethods)

# CollectionCertStoreParameters

` public class CollectionCertStoreParameters `   
` extends https://developer.android.com/reference/java/lang/Object ` ` implements https://developer.android.com/reference/java/security/cert/CertStoreParameters `

|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | java.security.cert.CollectionCertStoreParameters |

<br />

*** ** * ** ***

Parameters used as input for the Collection `CertStore` algorithm.

This class is used to provide necessary configuration parameters to implementations of the Collection `CertStore` algorithm. The only parameter included in this class is the `Collection` from which the `CertStore` will retrieve certificates and CRLs.

**Concurrent Access**

Unless otherwise specified, the methods defined in this class are not thread-safe. Multiple threads that need to access a single object concurrently should synchronize amongst themselves and provide the necessary locking. Multiple threads each manipulating separate objects need not synchronize.
**See also:**

- `https://developer.android.com/reference/java/util/Collection`
- `https://developer.android.com/reference/java/security/cert/CertStore`

## Summary

| ### Public constructors ||
|---|---|
| ` https://developer.android.com/reference/java/security/cert/CollectionCertStoreParameters#CollectionCertStoreParameters()() ` Creates an instance of `CollectionCertStoreParameters` with the default parameter values (an empty and immutable `Collection`). |
| ` https://developer.android.com/reference/java/security/cert/CollectionCertStoreParameters#CollectionCertStoreParameters(java.util.Collection<?>)(https://developer.android.com/reference/java/util/Collection<?> collection) ` Creates an instance of `CollectionCertStoreParameters` which will allow certificates and CRLs to be retrieved from the specified `Collection`. |

| ### Public methods ||
|---|---|
| ` https://developer.android.com/reference/java/lang/Object` | ` https://developer.android.com/reference/java/security/cert/CollectionCertStoreParameters#clone()() ` Returns a copy of this object. |
| ` https://developer.android.com/reference/java/util/Collection<?>` | ` https://developer.android.com/reference/java/security/cert/CollectionCertStoreParameters#getCollection()() ` Returns the `Collection` from which `Certificate`s and `CRL`s are retrieved. |
| ` https://developer.android.com/reference/java/lang/String` | ` https://developer.android.com/reference/java/security/cert/CollectionCertStoreParameters#toString()() ` Returns a formatted string describing the parameters. |

### 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*.
From interface ` https://developer.android.com/reference/java/security/cert/CertStoreParameters ` ` abstract https://developer.android.com/reference/java/lang/Object` ` https://developer.android.com/reference/java/security/cert/CertStoreParameters#clone()() `

Makes a copy of this `CertStoreParameters`.

## Public constructors

### CollectionCertStoreParameters

Added in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public CollectionCertStoreParameters ()
```

Creates an instance of `CollectionCertStoreParameters` with the default parameter values (an empty and immutable `Collection`).

<br />

### CollectionCertStoreParameters

Added in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public CollectionCertStoreParameters (Collection<?> collection)
```

Creates an instance of `CollectionCertStoreParameters` which will allow certificates and CRLs to be retrieved from the specified `Collection`. If the specified `Collection` contains an object that is not a `Certificate` or `CRL`, that object will be ignored by the Collection `CertStore`.

The `Collection` is **not** copied. Instead, a reference is used. This allows the caller to subsequently add or remove `Certificates` or `CRL`s from the `Collection`, thus changing the set of `Certificates` or `CRL`s available to the Collection `CertStore`. The Collection `CertStore` will not modify the contents of the `Collection`.

If the `Collection` will be modified by one thread while another thread is calling a method of a Collection `CertStore` that has been initialized with this `Collection`, the `Collection` must have fail-fast iterators.

<br />

| Parameters ||
|---|---|
| `collection` | `Collection`: a `Collection` of `Certificate`s and `CRL`s <br /> |

| Throws ||
|---|---|
| `https://developer.android.com/reference/java/lang/NullPointerException` | if `collection` is `null` |

## Public methods

### clone

Added in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public Object clone ()
```

Returns a copy of this object. Note that only a reference to the `Collection` is copied, and not the contents.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/java/lang/Object` | the copy <br /> |

### getCollection

Added in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public Collection<?> getCollection ()
```

Returns the `Collection` from which `Certificate`s and `CRL`s are retrieved. This is **not** a copy of the `Collection`, it is a reference. This allows the caller to subsequently add or remove `Certificates` or `CRL`s from the `Collection`.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/java/util/Collection<?>` | the `Collection` (never null) <br /> |

### toString

Added in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
public String toString ()
```

Returns a formatted string describing the parameters.

<br />

| Returns ||
|---|---|
| `https://developer.android.com/reference/java/lang/String` | a formatted string describing the parameters <br /> |