# Hierarchy For Package org.optaplanner.core.impl.domain.common

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - java.util.AbstractMap<K,V> (implements java.util.Map<K,V>)
    - java.util.concurrent.ConcurrentHashMap<K,V> (implements java.util.concurrent.ConcurrentMap<K,V>, java.io.Serializable)
      - org.optaplanner.core.impl.domain.common.ConcurrentMemoization<K,V>
  - org.optaplanner.core.impl.domain.common.AlphabeticMemberComparator (implements java.util.Comparator<T>, java.io.Serializable)
  - org.optaplanner.core.impl.domain.common.ReflectionHelper

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