Joiner.MapJoiner (Guava: Google Core Libraries for Java 19.0 API)

java.lang.Object
- com.google.common.base.Joiner.MapJoiner

Enclosing class:

Joiner
```
public static final class Joiner.MapJoiner
extends Object
```
An object that joins map entries in the same manner as Joiner joins iterables and arrays. Like Joiner, it is thread-safe and immutable.
In addition to operating on Map instances, MapJoiner can operate on Multimap entries in two distinct modes:
- To output a separate entry for each key-value pair, pass multimap.entries() to a MapJoiner method that accepts entries as input, and receive output of the form key1=A&key1=B&key2=C.
- To output a single entry for each key, pass multimap.asMap() to a MapJoiner method that accepts a map as input, and receive output of the form key1=[A, B]&key2=C.
Since:

2.0

Method Summary

Methods
Modifier and Type	Method and Description
`<A extends Appendable> A`	`appendTo(A appendable, Iterable<? extends Map.Entry<?,?>> entries)` Appends the string representation of each entry in `entries`, using the previously configured separator and key-value separator, to `appendable`.
`<A extends Appendable> A`	`appendTo(A appendable, Iterator<? extends Map.Entry<?,?>> parts)` Appends the string representation of each entry in `entries`, using the previously configured separator and key-value separator, to `appendable`.
`<A extends Appendable> A`	`appendTo(A appendable, Map<?,?> map)` Appends the string representation of each entry of `map`, using the previously configured separator and key-value separator, to `appendable`.
`StringBuilder`	`appendTo(StringBuilder builder, Iterable<? extends Map.Entry<?,?>> entries)` Appends the string representation of each entry in `entries`, using the previously configured separator and key-value separator, to `builder`.
`StringBuilder`	`appendTo(StringBuilder builder, Iterator<? extends Map.Entry<?,?>> entries)` Appends the string representation of each entry in `entries`, using the previously configured separator and key-value separator, to `builder`.
`StringBuilder`	`appendTo(StringBuilder builder, Map<?,?> map)` Appends the string representation of each entry of `map`, using the previously configured separator and key-value separator, to `builder`.
`String`	`join(Iterable<? extends Map.Entry<?,?>> entries)` Returns a string containing the string representation of each entry in `entries`, using the previously configured separator and key-value separator.
`String`	`join(Iterator<? extends Map.Entry<?,?>> entries)` Returns a string containing the string representation of each entry in `entries`, using the previously configured separator and key-value separator.
`String`	`join(Map<?,?> map)` Returns a string containing the string representation of each entry of `map`, using the previously configured separator and key-value separator.
`Joiner.MapJoiner`	`useForNull(String nullText)` Returns a map joiner with the same behavior as this one, except automatically substituting `nullText` for any provided null keys or values.

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

- Method Detail
  - appendTo
```
public <A extends Appendable> A appendTo(A appendable,
                                Map<?,?> map)
                              throws IOException
```
    Appends the string representation of each entry of map, using the previously configured separator and key-value separator, to appendable.
    
    Throws:
    
    IOException
  - appendTo
```
public StringBuilder appendTo(StringBuilder builder,
                     Map<?,?> map)
```
    Appends the string representation of each entry of map, using the previously configured separator and key-value separator, to builder. Identical to appendTo(Appendable, Map), except that it does not throw IOException.
  - join
```
@CheckReturnValue
public String join(Map<?,?> map)
```
    Returns a string containing the string representation of each entry of map, using the previously configured separator and key-value separator.
  - appendTo
```
@Beta
public <A extends Appendable> A appendTo(A appendable,
                                     Iterable<? extends Map.Entry<?,?>> entries)
                              throws IOException
```
    Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to appendable.
    
    Throws:
    
    IOException
    Since:
    
    10.0
  - appendTo
```
@Beta
public <A extends Appendable> A appendTo(A appendable,
                                     Iterator<? extends Map.Entry<?,?>> parts)
                              throws IOException
```
    Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to appendable.
    
    Throws:
    
    IOException
    Since:
    
    11.0
  - appendTo
```
@Beta
public StringBuilder appendTo(StringBuilder builder,
                          Iterable<? extends Map.Entry<?,?>> entries)
```
    Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to builder. Identical to appendTo(Appendable, Iterable), except that it does not throw IOException.
    
    Since:
    
    10.0
  - appendTo
```
@Beta
public StringBuilder appendTo(StringBuilder builder,
                          Iterator<? extends Map.Entry<?,?>> entries)
```
    Appends the string representation of each entry in entries, using the previously configured separator and key-value separator, to builder. Identical to appendTo(Appendable, Iterable), except that it does not throw IOException.
    
    Since:
    
    11.0
  - join
```
@Beta
@CheckReturnValue
public String join(Iterable<? extends Map.Entry<?,?>> entries)
```
    Returns a string containing the string representation of each entry in entries, using the previously configured separator and key-value separator.
    
    Since:
    
    10.0
  - join
```
@Beta
@CheckReturnValue
public String join(Iterator<? extends Map.Entry<?,?>> entries)
```
    Returns a string containing the string representation of each entry in entries, using the previously configured separator and key-value separator.
    
    Since:
    
    11.0
  - useForNull
```
@CheckReturnValue
public Joiner.MapJoiner useForNull(String nullText)
```
    Returns a map joiner with the same behavior as this one, except automatically substituting nullText for any provided null keys or values.

Class Joiner.MapJoiner

Method Summary

Methods inherited from class java.lang.Object

Method Detail

appendTo

appendTo

join

appendTo

appendTo

appendTo

appendTo

join

join

useForNull