InternCache (jackson-core 2.3.5)

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.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
  
  Methods
  Modifier and Type Method and Description
  
  String intern(String input)
  - Methods inherited from class java.util.concurrent.ConcurrentHashMap
    clear, contains, containsKey, containsValue, elements, entrySet, get, isEmpty, keys, keySet, put, putAll, putIfAbsent, remove, remove, replace, replace, size, values
  - Methods inherited from class java.util.AbstractMap
    clone, equals, hashCode, toString
  - Methods inherited from class java.lang.Object
    finalize, getClass, notify, notifyAll, wait, wait, wait
  - Methods inherited from interface java.util.Map
    equals, hashCode

Field Detail

instance

public static final InternCache instance

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

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