https://logging.apache.org/log4j/2.x/log4j-core/: The Apache Log4j Implementation (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 
public final class org.apache.logging.log4j.core.pattern.FileDatePatternConverter
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.apache.logging.log4j.core.pattern.FileDatePatternConverter
  super_class: java.lang.Object
{
  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.logging.log4j.core.pattern.FileDatePatternConverter this
         0: .line 34
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 35
            return
        end local 0 // org.apache.logging.log4j.core.pattern.FileDatePatternConverter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/apache/logging/log4j/core/pattern/FileDatePatternConverter;

  public static org.apache.logging.log4j.core.pattern.PatternConverter newInstance(java.lang.String[]);
    descriptor: ([Ljava/lang/String;)Lorg/apache/logging/log4j/core/pattern/PatternConverter;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=4, locals=1, args_size=1
        start local 0 // java.lang.String[] options
         0: .line 44
            aload 0 /* options */
            ifnull 1
            aload 0 /* options */
            arraylength
            ifne 4
         1: .line 46
      StackMap locals:
      StackMap stack:
            iconst_1
            anewarray java.lang.String
            dup
            iconst_0
         2: .line 47
            ldc "yyyy-MM-dd"
            aastore
         3: .line 45
            invokestatic org.apache.logging.log4j.core.pattern.DatePatternConverter.newInstance:([Ljava/lang/String;)Lorg/apache/logging/log4j/core/pattern/DatePatternConverter;
            areturn
         4: .line 51
      StackMap locals:
      StackMap stack:
            aload 0 /* options */
            invokestatic org.apache.logging.log4j.core.pattern.DatePatternConverter.newInstance:([Ljava/lang/String;)Lorg/apache/logging/log4j/core/pattern/DatePatternConverter;
            areturn
        end local 0 // java.lang.String[] options
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    5     0  options  [Ljava/lang/String;
    MethodParameters:
         Name  Flags
      options  final
}
SourceFile: "FileDatePatternConverter.java"
    RuntimeVisibleAnnotations: 
      org.apache.logging.log4j.core.config.plugins.Plugin(name = "FileDatePatternConverter", category = "FileConverter")
      org.apache.logging.log4j.core.pattern.ConverterKeys(value = {"d", "date"})
    RuntimeInvisibleAnnotations: 
      org.apache.logging.log4j.util.PerformanceSensitive(value = {"allocation"})