InternCache (jackson-core 2.2.4)

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

All Implemented Interfaces:

Serializable, Cloneable, Map<String,String>
```
public final class InternCache
extends LinkedHashMap<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>
- 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)
  
  protected boolean removeEldestEntry(Map.Entry<String,String> eldest)
  - Methods inherited from class java.util.LinkedHashMap
    clear, containsValue, get
  - Methods inherited from class java.util.HashMap
    clone, containsKey, entrySet, isEmpty, keySet, put, putAll, remove, size, values
  - Methods inherited from class java.util.AbstractMap
    equals, hashCode, toString
  - Methods inherited from class java.lang.Object
    finalize, getClass, notify, notifyAll, wait, wait, wait
  - Methods inherited from interface java.util.Map
    containsKey, entrySet, equals, hashCode, isEmpty, keySet, put, putAll, remove, size, values

Field Detail

instance

public static final InternCache instance

Method Detail

removeEldestEntry
```
protected boolean removeEldestEntry(Map.Entry<String,String> eldest)
```
Overrides:

removeEldestEntry in class LinkedHashMap<String,String>

intern
```
public String intern(String input)
```

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