https://openjdk.java.net/ 
public class sun.jvm.hotspot.classfile.ClassLoaderData extends sun.jvm.hotspot.runtime.VMObject
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: sun.jvm.hotspot.classfile.ClassLoaderData
  super_class: sun.jvm.hotspot.runtime.VMObject
{
  private static sun.jvm.hotspot.types.AddressField classLoaderField;
    descriptor: Lsun/jvm/hotspot/types/AddressField;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  private static sun.jvm.hotspot.types.AddressField nextField;
    descriptor: Lsun/jvm/hotspot/types/AddressField;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  private static sun.jvm.hotspot.oops.MetadataField klassesField;
    descriptor: Lsun/jvm/hotspot/oops/MetadataField;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  private static sun.jvm.hotspot.oops.CIntField isUnsafeAnonymousField;
    descriptor: Lsun/jvm/hotspot/oops/CIntField;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  private static sun.jvm.hotspot.types.AddressField dictionaryField;
    descriptor: Lsun/jvm/hotspot/types/AddressField;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 36
            new sun.jvm.hotspot.classfile.ClassLoaderData$1
            dup
            invokespecial sun.jvm.hotspot.classfile.ClassLoaderData$1.<init>:()V
            invokestatic sun.jvm.hotspot.runtime.VM.registerVMInitializedObserver:(Ljava/util/Observer;)V
         1: .line 56
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private static synchronized void initialize(sun.jvm.hotspot.types.TypeDataBase);
    descriptor: (Lsun/jvm/hotspot/types/TypeDataBase;)V
    flags: (0x002a) ACC_PRIVATE, ACC_STATIC, ACC_SYNCHRONIZED
    Code:
      stack=5, locals=2, args_size=1
        start local 0 // sun.jvm.hotspot.types.TypeDataBase db
         0: .line 44
            aload 0 /* db */
            ldc "ClassLoaderData"
            invokeinterface sun.jvm.hotspot.types.TypeDataBase.lookupType:(Ljava/lang/String;)Lsun/jvm/hotspot/types/Type;
            astore 1 /* type */
        start local 1 // sun.jvm.hotspot.types.Type type
         1: .line 45
            aload 1 /* type */
            ldc "_class_loader"
            invokeinterface sun.jvm.hotspot.types.Type.getAddressField:(Ljava/lang/String;)Lsun/jvm/hotspot/types/AddressField;
            putstatic sun.jvm.hotspot.classfile.ClassLoaderData.classLoaderField:Lsun/jvm/hotspot/types/AddressField;
         2: .line 46
            aload 1 /* type */
            ldc "_next"
            invokeinterface sun.jvm.hotspot.types.Type.getAddressField:(Ljava/lang/String;)Lsun/jvm/hotspot/types/AddressField;
            putstatic sun.jvm.hotspot.classfile.ClassLoaderData.nextField:Lsun/jvm/hotspot/types/AddressField;
         3: .line 47
            new sun.jvm.hotspot.oops.MetadataField
            dup
            aload 1 /* type */
            ldc "_klasses"
            invokeinterface sun.jvm.hotspot.types.Type.getAddressField:(Ljava/lang/String;)Lsun/jvm/hotspot/types/AddressField;
            lconst_0
            invokespecial sun.jvm.hotspot.oops.MetadataField.<init>:(Lsun/jvm/hotspot/types/AddressField;J)V
            putstatic sun.jvm.hotspot.classfile.ClassLoaderData.klassesField:Lsun/jvm/hotspot/oops/MetadataField;
         4: .line 48
            new sun.jvm.hotspot.oops.CIntField
            dup
            aload 1 /* type */
            ldc "_is_unsafe_anonymous"
            invokeinterface sun.jvm.hotspot.types.Type.getCIntegerField:(Ljava/lang/String;)Lsun/jvm/hotspot/types/CIntegerField;
            lconst_0
            invokespecial sun.jvm.hotspot.oops.CIntField.<init>:(Lsun/jvm/hotspot/types/CIntegerField;J)V
            putstatic sun.jvm.hotspot.classfile.ClassLoaderData.isUnsafeAnonymousField:Lsun/jvm/hotspot/oops/CIntField;
         5: .line 49
            aload 1 /* type */
            ldc "_dictionary"
            invokeinterface sun.jvm.hotspot.types.Type.getAddressField:(Ljava/lang/String;)Lsun/jvm/hotspot/types/AddressField;
            putstatic sun.jvm.hotspot.classfile.ClassLoaderData.dictionaryField:Lsun/jvm/hotspot/types/AddressField;
         6: .line 50
            return
        end local 1 // sun.jvm.hotspot.types.Type type
        end local 0 // sun.jvm.hotspot.types.TypeDataBase db
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0    db  Lsun/jvm/hotspot/types/TypeDataBase;
            1    7     1  type  Lsun/jvm/hotspot/types/Type;
    Exceptions:
      throws sun.jvm.hotspot.types.WrongTypeException
    MethodParameters:
      Name  Flags
      db    

  public void <init>(sun.jvm.hotspot.debugger.Address);
    descriptor: (Lsun/jvm/hotspot/debugger/Address;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
        start local 1 // sun.jvm.hotspot.debugger.Address addr
         0: .line 59
            aload 0 /* this */
            aload 1 /* addr */
            invokespecial sun.jvm.hotspot.runtime.VMObject.<init>:(Lsun/jvm/hotspot/debugger/Address;)V
         1: .line 60
            return
        end local 1 // sun.jvm.hotspot.debugger.Address addr
        end local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lsun/jvm/hotspot/classfile/ClassLoaderData;
            0    2     1  addr  Lsun/jvm/hotspot/debugger/Address;
    MethodParameters:
      Name  Flags
      addr  

  public sun.jvm.hotspot.memory.Dictionary dictionary();
    descriptor: ()Lsun/jvm/hotspot/memory/Dictionary;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
         0: .line 63
            getstatic sun.jvm.hotspot.classfile.ClassLoaderData.dictionaryField:Lsun/jvm/hotspot/types/AddressField;
            invokeinterface sun.jvm.hotspot.types.AddressField.getValue:()Lsun/jvm/hotspot/debugger/Address;
            astore 1 /* tmp */
        start local 1 // sun.jvm.hotspot.debugger.Address tmp
         1: .line 64
            ldc Lsun/jvm/hotspot/memory/Dictionary;
            aload 1 /* tmp */
            invokestatic sun.jvm.hotspot.runtime.VMObjectFactory.newObject:(Ljava/lang/Class;Lsun/jvm/hotspot/debugger/Address;)Ljava/lang/Object;
            checkcast sun.jvm.hotspot.memory.Dictionary
            areturn
        end local 1 // sun.jvm.hotspot.debugger.Address tmp
        end local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lsun/jvm/hotspot/classfile/ClassLoaderData;
            1    2     1   tmp  Lsun/jvm/hotspot/debugger/Address;

  public static sun.jvm.hotspot.classfile.ClassLoaderData instantiateWrapperFor(sun.jvm.hotspot.debugger.Address);
    descriptor: (Lsun/jvm/hotspot/debugger/Address;)Lsun/jvm/hotspot/classfile/ClassLoaderData;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // sun.jvm.hotspot.debugger.Address addr
         0: .line 68
            aload 0 /* addr */
            ifnonnull 2
         1: .line 69
            aconst_null
            areturn
         2: .line 71
      StackMap locals:
      StackMap stack:
            new sun.jvm.hotspot.classfile.ClassLoaderData
            dup
            aload 0 /* addr */
            invokespecial sun.jvm.hotspot.classfile.ClassLoaderData.<init>:(Lsun/jvm/hotspot/debugger/Address;)V
            areturn
        end local 0 // sun.jvm.hotspot.debugger.Address addr
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  addr  Lsun/jvm/hotspot/debugger/Address;
    MethodParameters:
      Name  Flags
      addr  

  public sun.jvm.hotspot.oops.Oop getClassLoader();
    descriptor: ()Lsun/jvm/hotspot/oops/Oop;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=1
        start local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
         0: .line 75
            getstatic sun.jvm.hotspot.classfile.ClassLoaderData.classLoaderField:Lsun/jvm/hotspot/types/AddressField;
            aload 0 /* this */
            invokevirtual sun.jvm.hotspot.classfile.ClassLoaderData.getAddress:()Lsun/jvm/hotspot/debugger/Address;
            invokeinterface sun.jvm.hotspot.types.AddressField.getValue:(Lsun/jvm/hotspot/debugger/Address;)Lsun/jvm/hotspot/debugger/Address;
            astore 1 /* handle */
        start local 1 // sun.jvm.hotspot.debugger.Address handle
         1: .line 76
            aload 1 /* handle */
            ifnull 4
         2: .line 78
            aload 1 /* handle */
            lconst_0
            invokeinterface sun.jvm.hotspot.debugger.Address.getOopHandleAt:(J)Lsun/jvm/hotspot/debugger/OopHandle;
            astore 2 /* refs */
        start local 2 // sun.jvm.hotspot.debugger.OopHandle refs
         3: .line 79
            invokestatic sun.jvm.hotspot.runtime.VM.getVM:()Lsun/jvm/hotspot/runtime/VM;
            invokevirtual sun.jvm.hotspot.runtime.VM.getObjectHeap:()Lsun/jvm/hotspot/oops/ObjectHeap;
            aload 2 /* refs */
            invokevirtual sun.jvm.hotspot.oops.ObjectHeap.newOop:(Lsun/jvm/hotspot/debugger/OopHandle;)Lsun/jvm/hotspot/oops/Oop;
            checkcast sun.jvm.hotspot.oops.Instance
            areturn
        end local 2 // sun.jvm.hotspot.debugger.OopHandle refs
         4: .line 81
      StackMap locals: sun.jvm.hotspot.debugger.Address
      StackMap stack:
            aconst_null
            areturn
        end local 1 // sun.jvm.hotspot.debugger.Address handle
        end local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    5     0    this  Lsun/jvm/hotspot/classfile/ClassLoaderData;
            1    5     1  handle  Lsun/jvm/hotspot/debugger/Address;
            3    4     2    refs  Lsun/jvm/hotspot/debugger/OopHandle;

  public boolean getisUnsafeAnonymous();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
         0: .line 85
            getstatic sun.jvm.hotspot.classfile.ClassLoaderData.isUnsafeAnonymousField:Lsun/jvm/hotspot/oops/CIntField;
            aload 0 /* this */
            invokevirtual sun.jvm.hotspot.oops.CIntField.getValue:(Lsun/jvm/hotspot/runtime/VMObject;)J
            lconst_0
            lcmp
            ifeq 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lsun/jvm/hotspot/classfile/ClassLoaderData;

  public sun.jvm.hotspot.classfile.ClassLoaderData next();
    descriptor: ()Lsun/jvm/hotspot/classfile/ClassLoaderData;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
         0: .line 89
            getstatic sun.jvm.hotspot.classfile.ClassLoaderData.nextField:Lsun/jvm/hotspot/types/AddressField;
            aload 0 /* this */
            invokevirtual sun.jvm.hotspot.classfile.ClassLoaderData.getAddress:()Lsun/jvm/hotspot/debugger/Address;
            invokeinterface sun.jvm.hotspot.types.AddressField.getValue:(Lsun/jvm/hotspot/debugger/Address;)Lsun/jvm/hotspot/debugger/Address;
            invokestatic sun.jvm.hotspot.classfile.ClassLoaderData.instantiateWrapperFor:(Lsun/jvm/hotspot/debugger/Address;)Lsun/jvm/hotspot/classfile/ClassLoaderData;
            areturn
        end local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/jvm/hotspot/classfile/ClassLoaderData;

  public sun.jvm.hotspot.oops.Klass getKlasses();
    descriptor: ()Lsun/jvm/hotspot/oops/Klass;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
         0: .line 92
            getstatic sun.jvm.hotspot.classfile.ClassLoaderData.klassesField:Lsun/jvm/hotspot/oops/MetadataField;
            aload 0 /* this */
            invokevirtual sun.jvm.hotspot.oops.MetadataField.getValue:(Lsun/jvm/hotspot/runtime/VMObject;)Lsun/jvm/hotspot/oops/Metadata;
            checkcast sun.jvm.hotspot.oops.Klass
            areturn
        end local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/jvm/hotspot/classfile/ClassLoaderData;

  public sun.jvm.hotspot.oops.Klass find(java.lang.String);
    descriptor: (Ljava/lang/String;)Lsun/jvm/hotspot/oops/Klass;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
        start local 1 // java.lang.String className
         0: .line 96
            aload 0 /* this */
            invokevirtual sun.jvm.hotspot.classfile.ClassLoaderData.getKlasses:()Lsun/jvm/hotspot/oops/Klass;
            astore 2 /* l */
        start local 2 // sun.jvm.hotspot.oops.Klass l
         1: goto 5
         2: .line 97
      StackMap locals: sun.jvm.hotspot.oops.Klass
      StackMap stack:
            aload 2 /* l */
            invokevirtual sun.jvm.hotspot.oops.Klass.getName:()Lsun/jvm/hotspot/oops/Symbol;
            aload 1 /* className */
            invokevirtual sun.jvm.hotspot.oops.Symbol.equals:(Ljava/lang/String;)Z
            ifeq 4
         3: .line 98
            aload 2 /* l */
            areturn
         4: .line 96
      StackMap locals:
      StackMap stack:
            aload 2 /* l */
            invokevirtual sun.jvm.hotspot.oops.Klass.getNextLinkKlass:()Lsun/jvm/hotspot/oops/Klass;
            astore 2 /* l */
      StackMap locals:
      StackMap stack:
         5: aload 2 /* l */
            ifnonnull 2
        end local 2 // sun.jvm.hotspot.oops.Klass l
         6: .line 101
            aconst_null
            areturn
        end local 1 // java.lang.String className
        end local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    7     0       this  Lsun/jvm/hotspot/classfile/ClassLoaderData;
            0    7     1  className  Ljava/lang/String;
            1    6     2          l  Lsun/jvm/hotspot/oops/Klass;
    MethodParameters:
           Name  Flags
      className  

  public void classesDo(sun.jvm.hotspot.classfile.ClassLoaderDataGraph$ClassVisitor);
    descriptor: (Lsun/jvm/hotspot/classfile/ClassLoaderDataGraph$ClassVisitor;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
        start local 1 // sun.jvm.hotspot.classfile.ClassLoaderDataGraph$ClassVisitor v
         0: .line 107
            aload 0 /* this */
            invokevirtual sun.jvm.hotspot.classfile.ClassLoaderData.getKlasses:()Lsun/jvm/hotspot/oops/Klass;
            astore 2 /* l */
        start local 2 // sun.jvm.hotspot.oops.Klass l
         1: goto 4
         2: .line 108
      StackMap locals: sun.jvm.hotspot.oops.Klass
      StackMap stack:
            aload 1 /* v */
            aload 2 /* l */
            invokeinterface sun.jvm.hotspot.classfile.ClassLoaderDataGraph$ClassVisitor.visit:(Lsun/jvm/hotspot/oops/Klass;)V
         3: .line 107
            aload 2 /* l */
            invokevirtual sun.jvm.hotspot.oops.Klass.getNextLinkKlass:()Lsun/jvm/hotspot/oops/Klass;
            astore 2 /* l */
      StackMap locals:
      StackMap stack:
         4: aload 2 /* l */
            ifnonnull 2
        end local 2 // sun.jvm.hotspot.oops.Klass l
         5: .line 110
            return
        end local 1 // sun.jvm.hotspot.classfile.ClassLoaderDataGraph$ClassVisitor v
        end local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lsun/jvm/hotspot/classfile/ClassLoaderData;
            0    6     1     v  Lsun/jvm/hotspot/classfile/ClassLoaderDataGraph$ClassVisitor;
            1    5     2     l  Lsun/jvm/hotspot/oops/Klass;
    MethodParameters:
      Name  Flags
      v     

  public void allEntriesDo(sun.jvm.hotspot.classfile.ClassLoaderDataGraph$ClassAndLoaderVisitor);
    descriptor: (Lsun/jvm/hotspot/classfile/ClassLoaderDataGraph$ClassAndLoaderVisitor;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
        start local 1 // sun.jvm.hotspot.classfile.ClassLoaderDataGraph$ClassAndLoaderVisitor v
         0: .line 114
            aload 0 /* this */
            invokevirtual sun.jvm.hotspot.classfile.ClassLoaderData.getKlasses:()Lsun/jvm/hotspot/oops/Klass;
            astore 2 /* l */
        start local 2 // sun.jvm.hotspot.oops.Klass l
         1: goto 4
         2: .line 115
      StackMap locals: sun.jvm.hotspot.oops.Klass
      StackMap stack:
            aload 0 /* this */
            invokevirtual sun.jvm.hotspot.classfile.ClassLoaderData.dictionary:()Lsun/jvm/hotspot/memory/Dictionary;
            aload 1 /* v */
            aload 0 /* this */
            invokevirtual sun.jvm.hotspot.classfile.ClassLoaderData.getClassLoader:()Lsun/jvm/hotspot/oops/Oop;
            invokevirtual sun.jvm.hotspot.memory.Dictionary.allEntriesDo:(Lsun/jvm/hotspot/classfile/ClassLoaderDataGraph$ClassAndLoaderVisitor;Lsun/jvm/hotspot/oops/Oop;)V
         3: .line 114
            aload 2 /* l */
            invokevirtual sun.jvm.hotspot.oops.Klass.getNextLinkKlass:()Lsun/jvm/hotspot/oops/Klass;
            astore 2 /* l */
      StackMap locals:
      StackMap stack:
         4: aload 2 /* l */
            ifnonnull 2
        end local 2 // sun.jvm.hotspot.oops.Klass l
         5: .line 117
            return
        end local 1 // sun.jvm.hotspot.classfile.ClassLoaderDataGraph$ClassAndLoaderVisitor v
        end local 0 // sun.jvm.hotspot.classfile.ClassLoaderData this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lsun/jvm/hotspot/classfile/ClassLoaderData;
            0    6     1     v  Lsun/jvm/hotspot/classfile/ClassLoaderDataGraph$ClassAndLoaderVisitor;
            1    5     2     l  Lsun/jvm/hotspot/oops/Klass;
    MethodParameters:
      Name  Flags
      v     
}
SourceFile: "ClassLoaderData.java"
NestMembers:
  sun.jvm.hotspot.classfile.ClassLoaderData$1
InnerClasses:
  sun.jvm.hotspot.classfile.ClassLoaderData$1
  public abstract ClassAndLoaderVisitor = sun.jvm.hotspot.classfile.ClassLoaderDataGraph$ClassAndLoaderVisitor of sun.jvm.hotspot.classfile.ClassLoaderDataGraph
  public abstract ClassVisitor = sun.jvm.hotspot.classfile.ClassLoaderDataGraph$ClassVisitor of sun.jvm.hotspot.classfile.ClassLoaderDataGraph