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 abstract class it.unimi.dsi.fastutil.floats.AbstractFloatComparator implements it.unimi.dsi.fastutil.floats.FloatComparator, java.io.Serializable
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: it.unimi.dsi.fastutil.floats.AbstractFloatComparator
  super_class: java.lang.Object
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 0

  protected void <init>();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.floats.AbstractFloatComparator this
         0: .line 29
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 30
            return
        end local 0 // it.unimi.dsi.fastutil.floats.AbstractFloatComparator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lit/unimi/dsi/fastutil/floats/AbstractFloatComparator;

  public int compare(java.lang.Object, java.lang.Object);
    descriptor: (Ljava/lang/Object;Ljava/lang/Object;)I
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=3, locals=3, args_size=3
         0: .line 1
            aload 0
            aload 1
            checkcast java.lang.Float
            aload 2
            checkcast java.lang.Float
            invokeinterface it.unimi.dsi.fastutil.floats.FloatComparator.compare:(Ljava/lang/Float;Ljava/lang/Float;)I
            ireturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public java.util.Comparator reversed();
    descriptor: ()Ljava/util/Comparator;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokeinterface it.unimi.dsi.fastutil.floats.FloatComparator.reversed:()Lit/unimi/dsi/fastutil/floats/FloatComparator;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "AbstractFloatComparator.java"
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()