https://logging.apache.org/log4j/2.x/log4j-api/: The Apache Log4j API (The Apache Software Foundation)
  • Ralph Goers (Nextiva)
  • Gary Gregory (Rocket Software)
  • Scott Deboy
  • Remko Popma
  • Nick Williams
  • Matt Sicker (CloudBees)
  • Bruce Brouwer
  • Mikael Ståldal (Spotify)
  • Carter Kozak 
class org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack extends java.util.AbstractCollection<java.lang.String> implements org.apache.logging.log4j.spi.ThreadContextStack
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack
  super_class: java.util.AbstractCollection
{
  private static final long serialVersionUID;
    descriptor: J
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  private static final java.util.Iterator<java.lang.String> EMPTY_ITERATOR;
    descriptor: Ljava/util/Iterator;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    Signature: Ljava/util/Iterator<Ljava/lang/String;>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 58
            new org.apache.logging.log4j.ThreadContext$EmptyIterator
            dup
            invokespecial org.apache.logging.log4j.ThreadContext$EmptyIterator.<init>:()V
            putstatic org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack.EMPTY_ITERATOR:Ljava/util/Iterator;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
         0: .line 54
            aload 0 /* this */
            invokespecial java.util.AbstractCollection.<init>:()V
            return
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;

  public java.lang.String pop();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
         0: .line 62
            aconst_null
            areturn
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;

  public java.lang.String peek();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
         0: .line 67
            aconst_null
            areturn
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;

  public void push(java.lang.String);
    descriptor: (Ljava/lang/String;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
        start local 1 // java.lang.String message
         0: .line 72
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 1 // java.lang.String message
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;
            0    1     1  message  Ljava/lang/String;
    MethodParameters:
         Name  Flags
      message  final

  public int getDepth();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
         0: .line 77
            iconst_0
            ireturn
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;

  public java.util.List<java.lang.String> asList();
    descriptor: ()Ljava/util/List;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
         0: .line 82
            invokestatic java.util.Collections.emptyList:()Ljava/util/List;
            areturn
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;
    Signature: ()Ljava/util/List<Ljava/lang/String;>;

  public void trim(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=0, locals=2, args_size=2
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
        start local 1 // int depth
         0: .line 88
            return
        end local 1 // int depth
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0   this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;
            0    1     1  depth  I
    MethodParameters:
       Name  Flags
      depth  final

  public boolean equals(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
        start local 1 // java.lang.Object o
         0: .line 93
            aload 1 /* o */
            instanceof java.util.Collection
            ifeq 1
            aload 1 /* o */
            checkcast java.util.Collection
            invokeinterface java.util.Collection.isEmpty:()Z
            ifeq 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 1 // java.lang.Object o
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;
            0    2     1     o  Ljava/lang/Object;
    MethodParameters:
      Name  Flags
      o     final

  public int hashCode();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
         0: .line 99
            iconst_1
            ireturn
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;

  public org.apache.logging.log4j.ThreadContext$ContextStack copy();
    descriptor: ()Lorg/apache/logging/log4j/ThreadContext$ContextStack;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
         0: .line 104
            aload 0 /* this */
            areturn
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;

  public <T> T[] toArray();
    descriptor: ([Ljava/lang/Object;)[Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
        start local 1 // java.lang.Object[] a
         0: .line 109
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 1 // java.lang.Object[] a
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;
            0    1     1     a  [Ljava/lang/Object;
    Signature: <T:Ljava/lang/Object;>([TT;)[TT;
    MethodParameters:
      Name  Flags
      a     final

  public boolean add(java.lang.String);
    descriptor: (Ljava/lang/String;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
        start local 1 // java.lang.String e
         0: .line 114
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 1 // java.lang.String e
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;
            0    1     1     e  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      e     final

  public boolean containsAll(java.util.Collection<?>);
    descriptor: (Ljava/util/Collection;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
        start local 1 // java.util.Collection c
         0: .line 119
            iconst_0
            ireturn
        end local 1 // java.util.Collection c
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;
            0    1     1     c  Ljava/util/Collection<*>;
    Signature: (Ljava/util/Collection<*>;)Z
    MethodParameters:
      Name  Flags
      c     final

  public boolean addAll(java.util.Collection<? extends java.lang.String>);
    descriptor: (Ljava/util/Collection;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
        start local 1 // java.util.Collection c
         0: .line 124
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 1 // java.util.Collection c
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;
            0    1     1     c  Ljava/util/Collection<+Ljava/lang/String;>;
    Signature: (Ljava/util/Collection<+Ljava/lang/String;>;)Z
    MethodParameters:
      Name  Flags
      c     final

  public boolean removeAll(java.util.Collection<?>);
    descriptor: (Ljava/util/Collection;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
        start local 1 // java.util.Collection c
         0: .line 129
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 1 // java.util.Collection c
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;
            0    1     1     c  Ljava/util/Collection<*>;
    Signature: (Ljava/util/Collection<*>;)Z
    MethodParameters:
      Name  Flags
      c     final

  public boolean retainAll(java.util.Collection<?>);
    descriptor: (Ljava/util/Collection;)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
        start local 1 // java.util.Collection c
         0: .line 134
            new java.lang.UnsupportedOperationException
            dup
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            athrow
        end local 1 // java.util.Collection c
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;
            0    1     1     c  Ljava/util/Collection<*>;
    Signature: (Ljava/util/Collection<*>;)Z
    MethodParameters:
      Name  Flags
      c     final

  public java.util.Iterator<java.lang.String> iterator();
    descriptor: ()Ljava/util/Iterator;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
         0: .line 139
            getstatic org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack.EMPTY_ITERATOR:Ljava/util/Iterator;
            areturn
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;
    Signature: ()Ljava/util/Iterator<Ljava/lang/String;>;

  public int size();
    descriptor: ()I
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
         0: .line 144
            iconst_0
            ireturn
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;

  public org.apache.logging.log4j.ThreadContext$ContextStack getImmutableStackOrNull();
    descriptor: ()Lorg/apache/logging/log4j/ThreadContext$ContextStack;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
         0: .line 149
            aload 0 /* this */
            areturn
        end local 0 // org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/logging/log4j/ThreadContext$EmptyThreadContextStack;

  public boolean add(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast java.lang.String
            invokevirtual org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack.add:(Ljava/lang/String;)Z
            ireturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/util/AbstractCollection<Ljava/lang/String;>;Lorg/apache/logging/log4j/spi/ThreadContextStack;
SourceFile: "ThreadContext.java"
NestHost: org.apache.logging.log4j.ThreadContext
InnerClasses:
  public abstract ContextStack = org.apache.logging.log4j.ThreadContext$ContextStack of org.apache.logging.log4j.ThreadContext
  private EmptyIterator = org.apache.logging.log4j.ThreadContext$EmptyIterator of org.apache.logging.log4j.ThreadContext
  private EmptyThreadContextStack = org.apache.logging.log4j.ThreadContext$EmptyThreadContextStack of org.apache.logging.log4j.ThreadContext