https://github.com/Terracotta-OSS/offheap-store/: A library that offers data structures allocated off the java heap. 
public class org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory<K, V> implements org.terracotta.offheapstore.util.Factory<org.terracotta.offheapstore.WriteLockedOffHeapClockCache<K, V>>
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory
  super_class: java.lang.Object
{
  private static final int DEFAULT_TABLE_SIZE;
    descriptor: I
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 128

  private final org.terracotta.offheapstore.util.Factory<? extends org.terracotta.offheapstore.storage.StorageEngine<? super K, ? super V>> storageEngineFactory;
    descriptor: Lorg/terracotta/offheapstore/util/Factory;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Lorg/terracotta/offheapstore/util/Factory<+Lorg/terracotta/offheapstore/storage/StorageEngine<-TK;-TV;>;>;

  private final org.terracotta.offheapstore.paging.PageSource tableSource;
    descriptor: Lorg/terracotta/offheapstore/paging/PageSource;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final int tableSize;
    descriptor: I
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final org.terracotta.offheapstore.eviction.EvictionListener<K, V> evictionListener;
    descriptor: Lorg/terracotta/offheapstore/eviction/EvictionListener;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Lorg/terracotta/offheapstore/eviction/EvictionListener<TK;TV;>;

  public void <init>(org.terracotta.offheapstore.paging.PageSource, org.terracotta.offheapstore.util.Factory<? extends org.terracotta.offheapstore.storage.StorageEngine<? super K, ? super V>>);
    descriptor: (Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/util/Factory;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=3
        start local 0 // org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory this
        start local 1 // org.terracotta.offheapstore.paging.PageSource tableSource
        start local 2 // org.terracotta.offheapstore.util.Factory storageEngineFactory
         0: .line 52
            aload 0 /* this */
            aload 1 /* tableSource */
            aload 2 /* storageEngineFactory */
            sipush 128
            invokespecial org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.<init>:(Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/util/Factory;I)V
         1: .line 53
            return
        end local 2 // org.terracotta.offheapstore.util.Factory storageEngineFactory
        end local 1 // org.terracotta.offheapstore.paging.PageSource tableSource
        end local 0 // org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory this
      LocalVariableTable:
        Start  End  Slot                  Name  Signature
            0    2     0                  this  Lorg/terracotta/offheapstore/concurrent/WriteLockedOffHeapClockCacheFactory<TK;TV;>;
            0    2     1           tableSource  Lorg/terracotta/offheapstore/paging/PageSource;
            0    2     2  storageEngineFactory  Lorg/terracotta/offheapstore/util/Factory<+Lorg/terracotta/offheapstore/storage/StorageEngine<-TK;-TV;>;>;
    Signature: (Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/util/Factory<+Lorg/terracotta/offheapstore/storage/StorageEngine<-TK;-TV;>;>;)V
    MethodParameters:
                      Name  Flags
      tableSource           
      storageEngineFactory  

  public void <init>(org.terracotta.offheapstore.paging.PageSource, org.terracotta.offheapstore.util.Factory<? extends org.terracotta.offheapstore.storage.StorageEngine<? super K, ? super V>>, org.terracotta.offheapstore.eviction.EvictionListener<K, V>);
    descriptor: (Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/util/Factory;Lorg/terracotta/offheapstore/eviction/EvictionListener;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=4, args_size=4
        start local 0 // org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory this
        start local 1 // org.terracotta.offheapstore.paging.PageSource tableSource
        start local 2 // org.terracotta.offheapstore.util.Factory storageEngineFactory
        start local 3 // org.terracotta.offheapstore.eviction.EvictionListener evictionListener
         0: .line 64
            aload 0 /* this */
            aload 1 /* tableSource */
            aload 2 /* storageEngineFactory */
            aload 3 /* evictionListener */
            sipush 128
            invokespecial org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.<init>:(Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/util/Factory;Lorg/terracotta/offheapstore/eviction/EvictionListener;I)V
         1: .line 65
            return
        end local 3 // org.terracotta.offheapstore.eviction.EvictionListener evictionListener
        end local 2 // org.terracotta.offheapstore.util.Factory storageEngineFactory
        end local 1 // org.terracotta.offheapstore.paging.PageSource tableSource
        end local 0 // org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory this
      LocalVariableTable:
        Start  End  Slot                  Name  Signature
            0    2     0                  this  Lorg/terracotta/offheapstore/concurrent/WriteLockedOffHeapClockCacheFactory<TK;TV;>;
            0    2     1           tableSource  Lorg/terracotta/offheapstore/paging/PageSource;
            0    2     2  storageEngineFactory  Lorg/terracotta/offheapstore/util/Factory<+Lorg/terracotta/offheapstore/storage/StorageEngine<-TK;-TV;>;>;
            0    2     3      evictionListener  Lorg/terracotta/offheapstore/eviction/EvictionListener<TK;TV;>;
    Signature: (Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/util/Factory<+Lorg/terracotta/offheapstore/storage/StorageEngine<-TK;-TV;>;>;Lorg/terracotta/offheapstore/eviction/EvictionListener<TK;TV;>;)V
    MethodParameters:
                      Name  Flags
      tableSource           
      storageEngineFactory  
      evictionListener      

  public void <init>(org.terracotta.offheapstore.paging.PageSource, org.terracotta.offheapstore.util.Factory<? extends org.terracotta.offheapstore.storage.StorageEngine<? super K, ? super V>>, );
    descriptor: (Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/util/Factory;I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=4, args_size=4
        start local 0 // org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory this
        start local 1 // org.terracotta.offheapstore.paging.PageSource tableSource
        start local 2 // org.terracotta.offheapstore.util.Factory storageEngineFactory
        start local 3 // int tableSize
         0: .line 76
            aload 0 /* this */
            aload 1 /* tableSource */
            aload 2 /* storageEngineFactory */
            aconst_null
            iload 3 /* tableSize */
            invokespecial org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.<init>:(Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/util/Factory;Lorg/terracotta/offheapstore/eviction/EvictionListener;I)V
         1: .line 77
            return
        end local 3 // int tableSize
        end local 2 // org.terracotta.offheapstore.util.Factory storageEngineFactory
        end local 1 // org.terracotta.offheapstore.paging.PageSource tableSource
        end local 0 // org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory this
      LocalVariableTable:
        Start  End  Slot                  Name  Signature
            0    2     0                  this  Lorg/terracotta/offheapstore/concurrent/WriteLockedOffHeapClockCacheFactory<TK;TV;>;
            0    2     1           tableSource  Lorg/terracotta/offheapstore/paging/PageSource;
            0    2     2  storageEngineFactory  Lorg/terracotta/offheapstore/util/Factory<+Lorg/terracotta/offheapstore/storage/StorageEngine<-TK;-TV;>;>;
            0    2     3             tableSize  I
    Signature: (Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/util/Factory<+Lorg/terracotta/offheapstore/storage/StorageEngine<-TK;-TV;>;>;I)V
    MethodParameters:
                      Name  Flags
      tableSource           
      storageEngineFactory  
      tableSize             

  public void <init>(org.terracotta.offheapstore.paging.PageSource, org.terracotta.offheapstore.util.Factory<? extends org.terracotta.offheapstore.storage.StorageEngine<? super K, ? super V>>, org.terracotta.offheapstore.eviction.EvictionListener<K, V>, );
    descriptor: (Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/util/Factory;Lorg/terracotta/offheapstore/eviction/EvictionListener;I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=5, args_size=5
        start local 0 // org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory this
        start local 1 // org.terracotta.offheapstore.paging.PageSource tableSource
        start local 2 // org.terracotta.offheapstore.util.Factory storageEngineFactory
        start local 3 // org.terracotta.offheapstore.eviction.EvictionListener evictionListener
        start local 4 // int tableSize
         0: .line 88
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 89
            aload 0 /* this */
            aload 2 /* storageEngineFactory */
            putfield org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.storageEngineFactory:Lorg/terracotta/offheapstore/util/Factory;
         2: .line 90
            aload 0 /* this */
            aload 1 /* tableSource */
            putfield org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.tableSource:Lorg/terracotta/offheapstore/paging/PageSource;
         3: .line 91
            aload 0 /* this */
            iload 4 /* tableSize */
            putfield org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.tableSize:I
         4: .line 93
            aload 0 /* this */
            aload 3 /* evictionListener */
            putfield org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.evictionListener:Lorg/terracotta/offheapstore/eviction/EvictionListener;
         5: .line 94
            return
        end local 4 // int tableSize
        end local 3 // org.terracotta.offheapstore.eviction.EvictionListener evictionListener
        end local 2 // org.terracotta.offheapstore.util.Factory storageEngineFactory
        end local 1 // org.terracotta.offheapstore.paging.PageSource tableSource
        end local 0 // org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory this
      LocalVariableTable:
        Start  End  Slot                  Name  Signature
            0    6     0                  this  Lorg/terracotta/offheapstore/concurrent/WriteLockedOffHeapClockCacheFactory<TK;TV;>;
            0    6     1           tableSource  Lorg/terracotta/offheapstore/paging/PageSource;
            0    6     2  storageEngineFactory  Lorg/terracotta/offheapstore/util/Factory<+Lorg/terracotta/offheapstore/storage/StorageEngine<-TK;-TV;>;>;
            0    6     3      evictionListener  Lorg/terracotta/offheapstore/eviction/EvictionListener<TK;TV;>;
            0    6     4             tableSize  I
    Signature: (Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/util/Factory<+Lorg/terracotta/offheapstore/storage/StorageEngine<-TK;-TV;>;>;Lorg/terracotta/offheapstore/eviction/EvictionListener<TK;TV;>;I)V
    MethodParameters:
                      Name  Flags
      tableSource           
      storageEngineFactory  
      evictionListener      
      tableSize             

  public org.terracotta.offheapstore.WriteLockedOffHeapClockCache<K, V> newInstance();
    descriptor: ()Lorg/terracotta/offheapstore/WriteLockedOffHeapClockCache;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=3, args_size=1
        start local 0 // org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory this
         0: .line 104
            aload 0 /* this */
            getfield org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.storageEngineFactory:Lorg/terracotta/offheapstore/util/Factory;
            invokeinterface org.terracotta.offheapstore.util.Factory.newInstance:()Ljava/lang/Object;
            checkcast org.terracotta.offheapstore.storage.StorageEngine
            astore 1 /* storageEngine */
        start local 1 // org.terracotta.offheapstore.storage.StorageEngine storageEngine
         1: .line 106
            aload 0 /* this */
            getfield org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.evictionListener:Lorg/terracotta/offheapstore/eviction/EvictionListener;
            ifnonnull 4
         2: .line 107
            new org.terracotta.offheapstore.WriteLockedOffHeapClockCache
            dup
            aload 0 /* this */
            getfield org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.tableSource:Lorg/terracotta/offheapstore/paging/PageSource;
            aload 1 /* storageEngine */
            aload 0 /* this */
            getfield org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.tableSize:I
            invokespecial org.terracotta.offheapstore.WriteLockedOffHeapClockCache.<init>:(Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/storage/StorageEngine;I)V
         3: areturn
         4: .line 109
      StackMap locals: org.terracotta.offheapstore.storage.StorageEngine
      StackMap stack:
            new org.terracotta.offheapstore.eviction.EvictionListeningWriteLockedOffHeapClockCache
            dup
            aload 0 /* this */
            getfield org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.evictionListener:Lorg/terracotta/offheapstore/eviction/EvictionListener;
            aload 0 /* this */
            getfield org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.tableSource:Lorg/terracotta/offheapstore/paging/PageSource;
            aload 1 /* storageEngine */
            aload 0 /* this */
            getfield org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.tableSize:I
            invokespecial org.terracotta.offheapstore.eviction.EvictionListeningWriteLockedOffHeapClockCache.<init>:(Lorg/terracotta/offheapstore/eviction/EvictionListener;Lorg/terracotta/offheapstore/paging/PageSource;Lorg/terracotta/offheapstore/storage/StorageEngine;I)V
         5: areturn
         6: .line 111
      StackMap locals:
      StackMap stack: java.lang.RuntimeException
            astore 2 /* e */
        start local 2 // java.lang.RuntimeException e
         7: .line 112
            aload 1 /* storageEngine */
            invokeinterface org.terracotta.offheapstore.storage.StorageEngine.destroy:()V
         8: .line 113
            aload 2 /* e */
            athrow
        end local 2 // java.lang.RuntimeException e
        end local 1 // org.terracotta.offheapstore.storage.StorageEngine storageEngine
        end local 0 // org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    9     0           this  Lorg/terracotta/offheapstore/concurrent/WriteLockedOffHeapClockCacheFactory<TK;TV;>;
            1    9     1  storageEngine  Lorg/terracotta/offheapstore/storage/StorageEngine<-TK;-TV;>;
            7    9     2              e  Ljava/lang/RuntimeException;
      Exception table:
        from    to  target  type
           1     3       6  Class java.lang.RuntimeException
           4     5       6  Class java.lang.RuntimeException
    Signature: ()Lorg/terracotta/offheapstore/WriteLockedOffHeapClockCache<TK;TV;>;

  public java.lang.Object newInstance();
    descriptor: ()Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual org.terracotta.offheapstore.concurrent.WriteLockedOffHeapClockCacheFactory.newInstance:()Lorg/terracotta/offheapstore/WriteLockedOffHeapClockCache;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: <K:Ljava/lang/Object;V:Ljava/lang/Object;>Ljava/lang/Object;Lorg/terracotta/offheapstore/util/Factory<Lorg/terracotta/offheapstore/WriteLockedOffHeapClockCache<TK;TV;>;>;
SourceFile: "WriteLockedOffHeapClockCacheFactory.java"