http://fastutil.di.unimi.it/: fastutil extends the Java Collections Framework by providing type-specific maps, sets, lists and priority queues with a small memory footprint and fast access and insertion; provides also big (64-bit) arrays, sets and lists, and fast, practical I/O classes for binary and text files.
  • Sebastiano Vigna 
public interface it.unimi.dsi.fastutil.Hash$Strategy<K>
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: it.unimi.dsi.fastutil.Hash$Strategy
  super_class: java.lang.Object
{
  public abstract int hashCode();
    descriptor: (Ljava/lang/Object;)I
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (TK;)I
    MethodParameters:
      Name  Flags
      o     

  public abstract boolean equals(K, );
    descriptor: (Ljava/lang/Object;Ljava/lang/Object;)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: (TK;TK;)Z
    MethodParameters:
      Name  Flags
      a     
      b     
}
Signature: <K:Ljava/lang/Object;>Ljava/lang/Object;
SourceFile: "Hash.java"
NestHost: it.unimi.dsi.fastutil.Hash
InnerClasses:
  public abstract Strategy = it.unimi.dsi.fastutil.Hash$Strategy of it.unimi.dsi.fastutil.Hash