InternCache (jackson-core 2.7.4)

java.lang.Object
- java.util.AbstractMap<K,V>
- - java.util.concurrent.ConcurrentHashMap<String,String>
  - - com.fasterxml.jackson.core.util.InternCache

All Implemented Interfaces:

Serializable, ConcurrentMap<String,String>, Map<String,String>
```
public final class InternCache
extends ConcurrentHashMap<String,String>
```
Singleton class that adds a simple first-level cache in front of regular String.intern() functionality. This is done as a minor performance optimization, to avoid calling native intern() method in cases where same String is being interned multiple times.
Note: that this class extends LinkedHashMap is an implementation detail -- no code should ever directly call Map methods.

See Also:

Serialized Form

- Nested Class Summary
  - Nested classes/interfaces inherited from class java.util.concurrent.ConcurrentHashMap
    ConcurrentHashMap.KeySetView<K,V>
  - Nested classes/interfaces inherited from class java.util.AbstractMap
    AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>
  - Nested classes/interfaces inherited from interface java.util.Map
    Map.Entry<K,V>
- Field Summary
  
  Fields
  Modifier and Type Field and Description
  
  static InternCache instance
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method and Description
  
  String intern(String input)
  - Methods inherited from class java.util.concurrent.ConcurrentHashMap
    clear, compute, computeIfAbsent, computeIfPresent, contains, containsKey, containsValue, elements, entrySet, equals, forEach, forEach, forEach, forEachEntry, forEachEntry, forEachKey, forEachKey, forEachValue, forEachValue, get, getOrDefault, hashCode, isEmpty, keys, keySet, keySet, mappingCount, merge, newKeySet, newKeySet, put, putAll, putIfAbsent, reduce, reduceEntries, reduceEntries, reduceEntriesToDouble, reduceEntriesToInt, reduceEntriesToLong, reduceKeys, reduceKeys, reduceKeysToDouble, reduceKeysToInt, reduceKeysToLong, reduceToDouble, reduceToInt, reduceToLong, reduceValues, reduceValues, reduceValuesToDouble, reduceValuesToInt, reduceValuesToLong, remove, remove, replace, replace, replaceAll, search, searchEntries, searchKeys, searchValues, size, toString, values
  - Methods inherited from class java.util.AbstractMap
    clone
  - Methods inherited from class java.lang.Object
    finalize, getClass, notify, notifyAll, wait, wait, wait

Fields
Modifier and Type	Field and Description
`static InternCache`	`instance`

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`String`	`intern(String input)`

Field Detail

instance

public static final InternCache instance

Method Detail
- intern
```
public String intern(String input)
```

Class InternCache

Nested Class Summary

Nested classes/interfaces inherited from class java.util.concurrent.ConcurrentHashMap

Nested classes/interfaces inherited from class java.util.AbstractMap

Nested classes/interfaces inherited from interface java.util.Map

Field Summary

Method Summary

Methods inherited from class java.util.concurrent.ConcurrentHashMap

Methods inherited from class java.util.AbstractMap

Methods inherited from class java.lang.Object

Field Detail

instance

Method Detail

intern