http://metrics.dropwizard.io/metrics-core: Metrics is a Java library which gives you unparalleled insight into what your code does in production. Metrics provides a powerful toolkit of ways to measure the behavior of critical components in your production environment.
  • Coda Hale
  • Ryan Tenney
  • Artem Prigoda 
class com.codahale.metrics.MetricRegistry$6 implements com.codahale.metrics.MetricRegistry$MetricBuilder<com.codahale.metrics.Gauge>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: com.codahale.metrics.MetricRegistry$6
  super_class: java.lang.Object
{
  final com.codahale.metrics.MetricRegistry this$0;
    descriptor: Lcom/codahale/metrics/MetricRegistry;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  private final com.codahale.metrics.MetricRegistry$MetricSupplier val$supplier;
    descriptor: Lcom/codahale/metrics/MetricRegistry$MetricSupplier;
    flags: (0x1012) ACC_PRIVATE, ACC_FINAL, ACC_SYNTHETIC

  void <init>(com.codahale.metrics.MetricRegistry, com.codahale.metrics.MetricRegistry$MetricSupplier);
    descriptor: (Lcom/codahale/metrics/MetricRegistry;Lcom/codahale/metrics/MetricRegistry$MetricSupplier;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // com.codahale.metrics.MetricRegistry$6 this
         0: .line 309
            aload 0 /* this */
            aload 1
            putfield com.codahale.metrics.MetricRegistry$6.this$0:Lcom/codahale/metrics/MetricRegistry;
            aload 0 /* this */
            aload 2
            putfield com.codahale.metrics.MetricRegistry$6.val$supplier:Lcom/codahale/metrics/MetricRegistry$MetricSupplier;
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.codahale.metrics.MetricRegistry$6 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/codahale/metrics/MetricRegistry$6;
    MethodParameters:
              Name  Flags
      this$0        final
      val$supplier  final

  public com.codahale.metrics.Gauge newMetric();
    descriptor: ()Lcom/codahale/metrics/Gauge;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.codahale.metrics.MetricRegistry$6 this
         0: .line 312
            aload 0 /* this */
            getfield com.codahale.metrics.MetricRegistry$6.val$supplier:Lcom/codahale/metrics/MetricRegistry$MetricSupplier;
            invokeinterface com.codahale.metrics.MetricRegistry$MetricSupplier.newMetric:()Lcom/codahale/metrics/Metric;
            checkcast com.codahale.metrics.Gauge
            areturn
        end local 0 // com.codahale.metrics.MetricRegistry$6 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/codahale/metrics/MetricRegistry$6;

  public boolean isInstance(com.codahale.metrics.Metric);
    descriptor: (Lcom/codahale/metrics/Metric;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.codahale.metrics.MetricRegistry$6 this
        start local 1 // com.codahale.metrics.Metric metric
         0: .line 317
            ldc Lcom/codahale/metrics/Gauge;
            aload 1 /* metric */
            invokevirtual java.lang.Class.isInstance:(Ljava/lang/Object;)Z
            ireturn
        end local 1 // com.codahale.metrics.Metric metric
        end local 0 // com.codahale.metrics.MetricRegistry$6 this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    1     0    this  Lcom/codahale/metrics/MetricRegistry$6;
            0    1     1  metric  Lcom/codahale/metrics/Metric;
    MethodParameters:
        Name  Flags
      metric  

  public com.codahale.metrics.Metric newMetric();
    descriptor: ()Lcom/codahale/metrics/Metric;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual com.codahale.metrics.MetricRegistry$6.newMetric:()Lcom/codahale/metrics/Gauge;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Lcom/codahale/metrics/MetricRegistry$MetricBuilder<Lcom/codahale/metrics/Gauge;>;
SourceFile: "MetricRegistry.java"
EnclosingMethod: com.codahale.metrics.MetricRegistry.gauge:(Ljava/lang/String;Lcom/codahale/metrics/MetricRegistry$MetricSupplier;)Lcom/codahale/metrics/Gauge;
NestHost: com.codahale.metrics.MetricRegistry
InnerClasses:
  com.codahale.metrics.MetricRegistry$6
  private abstract MetricBuilder = com.codahale.metrics.MetricRegistry$MetricBuilder of com.codahale.metrics.MetricRegistry
  public abstract MetricSupplier = com.codahale.metrics.MetricRegistry$MetricSupplier of com.codahale.metrics.MetricRegistry