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 class it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator implements it.unimi.dsi.fastutil.doubles.DoubleComparator, java.io.Serializable
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator
  super_class: java.lang.Object
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  protected void <init>();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator this
         0: .line 43
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/doubles/DoubleComparators$OppositeImplicitComparator;

  public final int compare(double, double);
    descriptor: (DD)I
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL
    Code:
      stack=4, locals=5, args_size=3
        start local 0 // it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator this
        start local 1 // double a
        start local 3 // double b
         0: .line 47
            dload 1 /* a */
            dload 3 /* b */
            invokestatic java.lang.Double.compare:(DD)I
            ineg
            ireturn
        end local 3 // double b
        end local 1 // double a
        end local 0 // it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/doubles/DoubleComparators$OppositeImplicitComparator;
            0    1     1     a  D
            0    1     3     b  D
    MethodParameters:
      Name  Flags
      a     final
      b     final

  public it.unimi.dsi.fastutil.doubles.DoubleComparator reversed();
    descriptor: ()Lit/unimi/dsi/fastutil/doubles/DoubleComparator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator this
         0: .line 51
            getstatic it.unimi.dsi.fastutil.doubles.DoubleComparators.NATURAL_COMPARATOR:Lit/unimi/dsi/fastutil/doubles/DoubleComparator;
            areturn
        end local 0 // it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/doubles/DoubleComparators$OppositeImplicitComparator;

  private java.lang.Object readResolve();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator this
         0: .line 54
            getstatic it.unimi.dsi.fastutil.doubles.DoubleComparators.OPPOSITE_COMPARATOR:Lit/unimi/dsi/fastutil/doubles/DoubleComparator;
            areturn
        end local 0 // it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lit/unimi/dsi/fastutil/doubles/DoubleComparators$OppositeImplicitComparator;

  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.Double
            aload 2
            checkcast java.lang.Double
            invokeinterface it.unimi.dsi.fastutil.doubles.DoubleComparator.compare:(Ljava/lang/Double;Ljava/lang/Double;)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
            invokevirtual it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator.reversed:()Lit/unimi/dsi/fastutil/doubles/DoubleComparator;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "DoubleComparators.java"
NestHost: it.unimi.dsi.fastutil.doubles.DoubleComparators
InnerClasses:
  protected OppositeImplicitComparator = it.unimi.dsi.fastutil.doubles.DoubleComparators$OppositeImplicitComparator of it.unimi.dsi.fastutil.doubles.DoubleComparators