Headers

okhttp3

Class Headers

java.lang.Object
- okhttp3.Headers

```
public final class Headers
extends Object
```
The header fields of a single HTTP message. Values are uninterpreted strings; use Request and Response for interpreted headers. This class maintains the order of the header fields within the HTTP message.
This class tracks header values line-by-line. A field with multiple comma- separated values on the same line will be treated as a field with a single value by this class. It is the caller's responsibility to detect and split on commas if their field permits multiple values. This simplifies use of single-valued fields whose values routinely contain commas, such as cookies or dates.

This class trims whitespace from values. It never returns values with leading or trailing whitespace.

Instances of this class are immutable. Use Headers.Builder to create instances.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
`static class`	`Headers.Builder`

Method Summary

All Methods

Static Methods

Instance Methods

Concrete Methods
Modifier and Type	Method and Description
`String`	`get(String name)` Returns the last value corresponding to the specified field, or null.
`Date`	`getDate(String name)` Returns the last value corresponding to the specified field parsed as an HTTP date, or null if either the field is absent or cannot be parsed as a date.
`String`	`name(int index)` Returns the field at `position`.
`Set<String>`	`names()` Returns an immutable case-insensitive set of header names.
`Headers.Builder`	`newBuilder()`
`static Headers`	`of(Map<String,String> headers)` Returns headers for the header names and values in the `Map`.
`static Headers`	`of(String... namesAndValues)` Returns headers for the alternating header names and values.
`int`	`size()` Returns the number of field values.
`Map<String,List<String>>`	`toMultimap()`
`String`	`toString()`
`String`	`value(int index)` Returns the value at `index`.
`List<String>`	`values(String name)` Returns an immutable list of the header values for `name`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Method Detail
  - get
```
public String get(String name)
```
    Returns the last value corresponding to the specified field, or null.
  - getDate
```
public Date getDate(String name)
```
    Returns the last value corresponding to the specified field parsed as an HTTP date, or null if either the field is absent or cannot be parsed as a date.
  - size
```
public int size()
```
    Returns the number of field values.
  - name
```
public String name(int index)
```
    Returns the field at position.
  - value
```
public String value(int index)
```
    Returns the value at index.
  - names
```
public Set<String> names()
```
    Returns an immutable case-insensitive set of header names.
  - values
```
public List<String> values(String name)
```
    Returns an immutable list of the header values for name.
  - newBuilder
```
public Headers.Builder newBuilder()
```
  - toString
```
public String toString()
```
  - toMultimap
```
public Map<String,List<String>> toMultimap()
```
  - of
```
public static Headers of(String... namesAndValues)
```
    Returns headers for the alternating header names and values. There must be an even number of arguments, and they must alternate between header names and values.
  - of
```
public static Headers of(Map<String,String> headers)
```
    Returns headers for the header names and values in the Map.