import java.util.function.Consumer; 
public class Lambda { 
  public static void main(String[] args) { 
    Consumer<String> c = s -> System.out.println(s); 
    c.accept("hello lambda!"); 
  } 
} 

public class Lambda { 
  static { 
    System.setProperty("jdk.internal.lambda.dumpProxyClasses", "."); 
  } 
  public static void main(String[] args) { 
    Consumer<String> c = new Consumer<String>(){ 
      @Override 
      public void accept(String s) { 
        System.out.println(s); 
      } 
      }; 
    c.accept("hello lambda"); 
  } 
} 

javap -v -p Lambda.class 

public Lambda(); 
  descriptor: ()V 
  flags: ACC_PUBLIC 
  Code: 
   stack=1, locals=1, args_size=1 
     0: aload_0 
     1: invokespecial #21         // Method java/lang/Object."<init>":()V 
     4: return 
   LineNumberTable: 
    line 3: 0 
   LocalVariableTable: 
    Start Length Slot Name  Signature 
      0    5   0 this  LLambda; 
 public static void main(java.lang.String[]); 
  descriptor: ([Ljava/lang/String;)V 
  flags: ACC_PUBLIC, ACC_STATIC 
  Code: 
   stack=2, locals=2, args_size=1 
     0: invokedynamic #30, 0       // InvokeDynamic #0:accept:()Ljava/util/function/Consumer; 
     5: astore_1 
     6: aload_1 
     7: ldc      #31         // String hello lambda 
     9: invokeinterface #33, 2      // InterfaceMethod java/util/function/Consumer.accept:(Ljava/lang/Object;)V 
    14: return 
   LineNumberTable: 
    line 8: 0 
    line 9: 6 
    line 10: 14 
   LocalVariableTable: 
    Start Length Slot Name  Signature 
      0   15   0 args  [Ljava/lang/String; 
      6    9   1   c  Ljava/util/function/Consumer; 
   LocalVariableTypeTable: 
    Start Length Slot Name  Signature 
      6    9   1   c  Ljava/util/function/Consumer<Ljava/lang/String;>; 
 private static void lambda$0(java.lang.String); 
  descriptor: (Ljava/lang/String;)V 
  flags: ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC 
  Code: 
   stack=2, locals=1, args_size=1 
     0: getstatic   #46         // Field java/lang/System.out:Ljava/io/PrintStream; 
     3: aload_0 
     4: invokevirtual #50         // Method java/io/PrintStream.println:(Ljava/lang/String;)V 
     7: return 
   LineNumberTable: 
    line 8: 0 
   LocalVariableTable: 
    Start Length Slot Name  Signature 
      0    8   0   s  Ljava/lang/String; 
} 
SourceFile: "Lambda.java" 
BootstrapMethods: 
 0: #66 invokestatic java/lang/invoke/LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite; 
  Method arguments: 
   #67 (Ljava/lang/Object;)V 
   #70 invokestatic Lambda.lambda$0:(Ljava/lang/String;)V 
   #71 (Ljava/lang/String;)V 
InnerClasses: 
   public static final #77= #73 of #75; //Lookup=class java/lang/invoke/MethodHandles$Lookup of class java/lang/invoke/MethodHandles 

0: #66 invokestatic java/lang/invoke/LambdaMetafactory.metafactory:(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite; 
 Method arguments: 
  #67 (Ljava/lang/Object;)V 
  #70 invokestatic Lambda.lambda$0:(Ljava/lang/String;)V 
  #71 (Ljava/lang/String;)V 

Method arguments: 
  #67 (Ljava/lang/Object;)V 
  #70 invokestatic Lambda.lambda$0:(Ljava/lang/String;)V 
  #71 (Ljava/lang/String;)V 

public static CallSite metafactory(MethodHandles.Lookup caller, 
                    String invokedName, 
                    MethodType invokedType, 
                    MethodType samMethodType, 
                    MethodHandle implMethod, 
                    MethodType instantiatedMethodType) 
      throws LambdaConversionException { 
    AbstractValidatingLambdaMetafactory mf; 
    mf = new InnerClassLambdaMetafactory(caller, invokedType, 
                       invokedName, samMethodType, 
                       implMethod, instantiatedMethodType, 
                       false, EMPTY_CLASS_ARRAY, EMPTY_MT_ARRAY); 
    mf.validateMetafactoryArgs(); 
    return mf.buildCallSite(); 
  } 

CallSite buildCallSite() throws LambdaConversionException { 
    final Class<?> innerClass = spinInnerClass(); 

System.setProperty("jdk.internal.lambda.dumpProxyClasses", "."); 

private static void lambda$0(java.lang.String); 
  descriptor: (Ljava/lang/String;)V 
  flags: ACC_PRIVATE, ACC_STATIC, ACC_SYNTHETIC 
  Code: 
   stack=2, locals=1, args_size=1 
     0: getstatic   #46         // Field java/lang/System.out:Ljava/io/PrintStream; 
     3: aload_0 
     4: invokevirtual #50         // Method java/io/PrintStream.println:(Ljava/lang/String;)V 
     7: return 
   LineNumberTable: 
    line 8: 0 
   LocalVariableTable: 
    Start Length Slot Name  Signature 
      0    8   0   s  Ljava/lang/String;

public void accept(java.lang.Object); 
  descriptor: (Ljava/lang/Object;)V 
  flags: ACC_PUBLIC 
  Code: 
   stack=1, locals=2, args_size=2 
    0: aload_1 
    1: checkcast   #15         // class java/lang/String 
    4: invokestatic #21         // Method Lambda.lambda$0:(Ljava/lang/String;)V 
    7: return 
  RuntimeVisibleAnnotations: 
   0: #13()