# ObjectOutputStream.PutField
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
Summary:[Ctors](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#pubctors)\|[Methods](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#pubmethods)\|[Inherited Methods](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#inhmethods)
# ObjectOutputStream.PutField
`
public
static
abstract
class
ObjectOutputStream.PutField
`
`
extends `[Object](https://developer.android.com/reference/java/lang/Object)`
``
`
|---|-------------------------------------|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | java.io.ObjectOutputStream.PutField |
*** ** * ** ***
Provide programmatic access to the persistent fields to be written to ObjectOutput.
## Summary
| ### Public constructors ||
|------------------------------------------------------------------------------------------------------------|---|
| ` `[PutField](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#PutField())`() ` |
| ### Public methods ||
|------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| ` abstract void` | ` `[put](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#put(java.lang.String,%20double))`(`[String](https://developer.android.com/reference/java/lang/String)` name, double val) ` Put the value of the named double field into the persistent field. |
| ` abstract void` | ` `[put](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#put(java.lang.String,%20float))`(`[String](https://developer.android.com/reference/java/lang/String)` name, float val) ` Put the value of the named float field into the persistent field. |
| ` abstract void` | ` `[put](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#put(java.lang.String,%20int))`(`[String](https://developer.android.com/reference/java/lang/String)` name, int val) ` Put the value of the named int field into the persistent field. |
| ` abstract void` | ` `[put](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#put(java.lang.String,%20long))`(`[String](https://developer.android.com/reference/java/lang/String)` name, long val) ` Put the value of the named long field into the persistent field. |
| ` abstract void` | ` `[put](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#put(java.lang.String,%20byte))`(`[String](https://developer.android.com/reference/java/lang/String)` name, byte val) ` Put the value of the named byte field into the persistent field. |
| ` abstract void` | ` `[put](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#put(java.lang.String,%20java.lang.Object))`(`[String](https://developer.android.com/reference/java/lang/String)` name, `[Object](https://developer.android.com/reference/java/lang/Object)` val) ` Put the value of the named Object field into the persistent field. |
| ` abstract void` | ` `[put](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#put(java.lang.String,%20short))`(`[String](https://developer.android.com/reference/java/lang/String)` name, short val) ` Put the value of the named short field into the persistent field. |
| ` abstract void` | ` `[put](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#put(java.lang.String,%20char))`(`[String](https://developer.android.com/reference/java/lang/String)` name, char val) ` Put the value of the named char field into the persistent field. |
| ` abstract void` | ` `[put](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#put(java.lang.String,%20boolean))`(`[String](https://developer.android.com/reference/java/lang/String)` name, boolean val) ` Put the value of the named boolean field into the persistent field. |
| ` abstract void` | ` `[write](https://developer.android.com/reference/java/io/ObjectOutputStream.PutField#write(java.io.ObjectOutput))`(`[ObjectOutput](https://developer.android.com/reference/java/io/ObjectOutput)` out) ` *This method was deprecated in API level 15. This method does not write the values contained by this`PutField`object in a proper format, and may result in corruption of the serialization stream. The correct way to write`PutField`data is by calling the[ObjectOutputStream.writeFields()](https://developer.android.com/reference/java/io/ObjectOutputStream#writeFields())method.* |
| ### Inherited methods |
|-----------------------|---|
| From class` `[java.lang.Object](https://developer.android.com/reference/java/lang/Object)` ` |--------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ` `[Object](https://developer.android.com/reference/java/lang/Object) | ` `[clone](https://developer.android.com/reference/java/lang/Object#clone())`() ` Creates and returns a copy of this object. | | ` boolean` | ` `[equals](https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object))`(`[Object](https://developer.android.com/reference/java/lang/Object)` obj) ` Indicates whether some other object is "equal to" this one. | | ` void` | ` `[finalize](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 `[Class](https://developer.android.com/reference/java/lang/Class)`` | ` `[getClass](https://developer.android.com/reference/java/lang/Object#getClass())`() ` Returns the runtime class of this`Object`. | | ` int` | ` `[hashCode](https://developer.android.com/reference/java/lang/Object#hashCode())`() ` Returns a hash code value for the object. | | ` final void` | ` `[notify](https://developer.android.com/reference/java/lang/Object#notify())`() ` Wakes up a single thread that is waiting on this object's monitor. | | ` final void` | ` `[notifyAll](https://developer.android.com/reference/java/lang/Object#notifyAll())`() ` Wakes up all threads that are waiting on this object's monitor. | | ` `[String](https://developer.android.com/reference/java/lang/String) | ` `[toString](https://developer.android.com/reference/java/lang/Object#toString())`() ` Returns a string representation of the object. | | ` final void` | ` `[wait](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` | ` `[wait](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` | ` `[wait](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 constructors
### PutField
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public PutField ()
```
## Public methods
### put
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract void put (String name,
double val)
```
Put the value of the named double field into the persistent field.
| Parameters ||
|--------|-----------------------------------------------------|
| `name` | `String`: the name of the serializable field
|
| `val` | `double`: the value to assign to the field
|
| Throws ||
|--------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------|
| [IllegalArgumentException](https://developer.android.com/reference/java/lang/IllegalArgumentException) | if`name`does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not`double` |
### put
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract void put (String name,
float val)
```
Put the value of the named float field into the persistent field.
| Parameters ||
|--------|-----------------------------------------------------|
| `name` | `String`: the name of the serializable field
|
| `val` | `float`: the value to assign to the field
|
| Throws ||
|--------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------|
| [IllegalArgumentException](https://developer.android.com/reference/java/lang/IllegalArgumentException) | if`name`does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not`float` |
### put
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract void put (String name,
int val)
```
Put the value of the named int field into the persistent field.
| Parameters ||
|--------|-----------------------------------------------------|
| `name` | `String`: the name of the serializable field
|
| `val` | `int`: the value to assign to the field
|
| Throws ||
|--------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------|
| [IllegalArgumentException](https://developer.android.com/reference/java/lang/IllegalArgumentException) | if`name`does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not`int` |
### put
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract void put (String name,
long val)
```
Put the value of the named long field into the persistent field.
| Parameters ||
|--------|-----------------------------------------------------|
| `name` | `String`: the name of the serializable field
|
| `val` | `long`: the value to assign to the field
|
| Throws ||
|--------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------|
| [IllegalArgumentException](https://developer.android.com/reference/java/lang/IllegalArgumentException) | if`name`does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not`long` |
### put
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract void put (String name,
byte val)
```
Put the value of the named byte field into the persistent field.
| Parameters ||
|--------|-----------------------------------------------------|
| `name` | `String`: the name of the serializable field
|
| `val` | `byte`: the value to assign to the field
|
| Throws ||
|--------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------|
| [IllegalArgumentException](https://developer.android.com/reference/java/lang/IllegalArgumentException) | if`name`does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not`byte` |
### put
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract void put (String name,
Object val)
```
Put the value of the named Object field into the persistent field.
| Parameters ||
|--------|------------------------------------------------------------------------|
| `name` | `String`: the name of the serializable field
|
| `val` | `Object`: the value to assign to the field (which may be`null`)
|
| Throws ||
|--------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [IllegalArgumentException](https://developer.android.com/reference/java/lang/IllegalArgumentException) | if`name`does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not a reference type |
### put
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract void put (String name,
short val)
```
Put the value of the named short field into the persistent field.
| Parameters ||
|--------|-----------------------------------------------------|
| `name` | `String`: the name of the serializable field
|
| `val` | `short`: the value to assign to the field
|
| Throws ||
|--------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------|
| [IllegalArgumentException](https://developer.android.com/reference/java/lang/IllegalArgumentException) | if`name`does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not`short` |
### put
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract void put (String name,
char val)
```
Put the value of the named char field into the persistent field.
| Parameters ||
|--------|-----------------------------------------------------|
| `name` | `String`: the name of the serializable field
|
| `val` | `char`: the value to assign to the field
|
| Throws ||
|--------------------------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------|
| [IllegalArgumentException](https://developer.android.com/reference/java/lang/IllegalArgumentException) | if`name`does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not`char` |
### put
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract void put (String name,
boolean val)
```
Put the value of the named boolean field into the persistent field.
| Parameters ||
|--------|-----------------------------------------------------|
| `name` | `String`: the name of the serializable field
|
| `val` | `boolean`: the value to assign to the field
|
| Throws ||
|--------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------|
| [IllegalArgumentException](https://developer.android.com/reference/java/lang/IllegalArgumentException) | if`name`does not match the name of a serializable field for the class whose fields are being written, or if the type of the named field is not`boolean` |
### write
Added in[API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
Deprecated in[API level 15](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public abstract void write (ObjectOutput out)
```
**This method was deprecated in API level 15.**
This method does not write the values contained by this`PutField`object in a proper format, and may result in corruption of the serialization stream. The correct way to write`PutField`data is by calling the[ObjectOutputStream.writeFields()](https://developer.android.com/reference/java/io/ObjectOutputStream#writeFields())method.
Write the data and fields to the specified ObjectOutput stream, which must be the same stream that produced this`PutField`object.
| Parameters ||
|-------|-------------------------------------------------------------------|
| `out` | `ObjectOutput`: the stream to write the data and fields to
|
| Throws ||
|--------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------|
| [IOException](https://developer.android.com/reference/java/io/IOException) | if I/O errors occur while writing to the underlying stream |
| [IllegalArgumentException](https://developer.android.com/reference/java/lang/IllegalArgumentException) | if the specified stream is not the same stream that produced this`PutField`object |