ImmutableMap.Builder (Guava: Google Core Libraries for Java 19.0 API)

java.lang.Object
- com.google.common.collect.ImmutableMap.Builder<K,V>

Direct Known Subclasses:

ImmutableBiMap.Builder, ImmutableSortedMap.Builder

Enclosing class:

ImmutableMap<K,V>
```
public static class ImmutableMap.Builder<K,V>
extends Object
```
A builder for creating immutable map instances, especially public static final maps ("constant maps"). Example:
```
   static final ImmutableMap<String, Integer> WORD_TO_INT =
       new ImmutableMap.Builder<String, Integer>()
           .put("one", 1)
           .put("two", 2)
           .put("three", 3)
           .build();
```
For small immutable maps, the ImmutableMap.of() methods are even more convenient.
Builder instances can be reused - it is safe to call build() multiple times to build multiple maps in series. Each map is a superset of the maps created before it.
Since:

2.0

Constructor Summary

Constructors
Constructor and Description

ImmutableMap.Builder()
Creates a new builder.

Constructors
Constructor and Description
`ImmutableMap.Builder()` Creates a new builder.

Method Summary

Methods
Modifier and Type	Method and Description
`ImmutableMap<K,V>`	`build()` Returns a newly-created immutable map.
`ImmutableMap.Builder<K,V>`	`orderEntriesByValue(Comparator<? super V> valueComparator)` Configures this `Builder` to order entries by value according to the specified comparator.
`ImmutableMap.Builder<K,V>`	`put(K key, V value)` Associates `key` with `value` in the built map.
`ImmutableMap.Builder<K,V>`	`put(Map.Entry<? extends K,? extends V> entry)` Adds the given `entry` to the map, making it immutable if necessary.
`ImmutableMap.Builder<K,V>`	`putAll(Iterable<? extends Map.Entry<? extends K,? extends V>> entries)` Adds all of the given entries to the built map.
`ImmutableMap.Builder<K,V>`	`putAll(Map<? extends K,? extends V> map)` Associates all of the given map's keys and values in the built map.

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

- Constructor Detail
  - ImmutableMap.Builder
```
public ImmutableMap.Builder()
```
    Creates a new builder. The returned builder is equivalent to the builder generated by ImmutableMap.builder().
- Method Detail
  - put
```
public ImmutableMap.Builder<K,V> put(K key,
                            V value)
```
    Associates key with value in the built map. Duplicate keys are not allowed, and will cause build() to fail.
  - put
```
public ImmutableMap.Builder<K,V> put(Map.Entry<? extends K,? extends V> entry)
```
    Adds the given entry to the map, making it immutable if necessary. Duplicate keys are not allowed, and will cause build() to fail.
    
    Since:
    
    11.0
  - putAll
```
public ImmutableMap.Builder<K,V> putAll(Map<? extends K,? extends V> map)
```
    Associates all of the given map's keys and values in the built map. Duplicate keys are not allowed, and will cause build() to fail.
    
    Throws:
    
    NullPointerException - if any key or value in map is null
  - putAll
```
@Beta
public ImmutableMap.Builder<K,V> putAll(Iterable<? extends Map.Entry<? extends K,? extends V>> entries)
```
    Adds all of the given entries to the built map. Duplicate keys are not allowed, and will cause build() to fail.
    
    Throws:
    
    NullPointerException - if any key, value, or entry is null
    Since:
    
    19.0
  - orderEntriesByValue
```
@Beta
public ImmutableMap.Builder<K,V> orderEntriesByValue(Comparator<? super V> valueComparator)
```
    Configures this Builder to order entries by value according to the specified comparator.
    The sort order is stable, that is, if two entries have values that compare as equivalent, the entry that was inserted first will be first in the built map's iteration order.
    
    Throws:
    
    IllegalStateException - if this method was already called
    Since:
    
    19.0
  - build
```
public ImmutableMap<K,V> build()
```
    Returns a newly-created immutable map.
    
    Throws:
    
    IllegalArgumentException - if duplicate keys were added

Class ImmutableMap.Builder<K,V>

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ImmutableMap.Builder

Method Detail

put

put

putAll

putAll

orderEntriesByValue

build