| Interface | Description | 
|---|---|
| CallStack | Strategy for obtaining and printing the current call stack. | 
| DefaultPooledObjectInfoMBean | The interface that defines the information about pooled objects that will be
 exposed via JMX. | 
| EvictionPolicy<T> | To provide a custom eviction policy (i.e. something other than  DefaultEvictionPolicyfor a pool, users must provide an implementation of
 this interface that provides the required eviction policy. | 
| GenericKeyedObjectPoolMXBean<K> | Defines the methods that will be made available via JMX. | 
| GenericObjectPoolMXBean | Defines the methods that will be made available via JMX. | 
| Class | Description | 
|---|---|
| AbandonedConfig | Configuration settings for abandoned object removal. | 
| BaseGenericObjectPool<T> | Base class that provides common functionality for  GenericObjectPoolandGenericKeyedObjectPool. | 
| BaseObjectPoolConfig<T> | Provides the implementation for the common attributes shared by the
 sub-classes. | 
| CallStackUtils | Utility methods for  CallStack. | 
| DefaultEvictionPolicy<T> | Provides the default implementation of  EvictionPolicyused by the
 pools. | 
| DefaultPooledObject<T> | This wrapper is used to track the additional information, such as state, for
 the pooled objects. | 
| DefaultPooledObjectInfo | Implementation of object that is used to provide information on pooled
 objects via JMX. | 
| EvictionConfig | This class is used by pool implementations to pass configuration information
 to  EvictionPolicyinstances. | 
| GenericKeyedObjectPool<K,T> | A configurable  KeyedObjectPoolimplementation. | 
| GenericKeyedObjectPoolConfig<T> | A simple "struct" encapsulating the configuration for a
  GenericKeyedObjectPool. | 
| GenericObjectPool<T> | A configurable  ObjectPoolimplementation. | 
| GenericObjectPoolConfig<T> | A simple "struct" encapsulating the configuration for a
  GenericObjectPool. | 
| NoOpCallStack | CallStack strategy using no-op implementations of all functionality. | 
| PooledSoftReference<T> | Extension of  DefaultPooledObjectto wrap pooled soft references. | 
| SecurityManagerCallStack | CallStack strategy using a  SecurityManager. | 
| SoftReferenceObjectPool<T> | A  SoftReferencebasedObjectPool. | 
| ThrowableCallStack | CallStack strategy that uses the stack trace from a  Throwable. | 
Object pooling API implementations.
         GenericObjectPool
         (GenericKeyedObjectPool)
         provides a more robust (but also more complicated)
         implementation of ObjectPool
         (KeyedObjectPool).
      
         SoftReferenceObjectPool
         provides a SoftReference based
         ObjectPool.
      
         See also the org.apache.tomcat.dbcp.pool2 package.
      
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