https://tomcat.apache.org/: Tomcat Servlet Engine Core Classes and Standard implementations 
public class org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache
  super_class: java.lang.Object
{
  private int cacheSize;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  private final java.util.Locale cacheDefaultLocale;
    descriptor: Ljava/util/Locale;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache parent;
    descriptor: Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  protected final org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache cLFCache;
    descriptor: Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL

  private final java.util.Map<java.lang.String, org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache> formatCache;
    descriptor: Ljava/util/Map;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/Map<Ljava/lang/String;Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;>;

  protected void <init>(int, java.util.Locale, org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache);
    descriptor: (ILjava/util/Locale;Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=6, args_size=4
        start local 0 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache this
        start local 1 // int size
        start local 2 // java.util.Locale loc
        start local 3 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache parent
         0: .line 359
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 352
            aload 0 /* this */
            iconst_0
            putfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.cacheSize:I
         2: .line 357
            aload 0 /* this */
            new java.util.HashMap
            dup
            invokespecial java.util.HashMap.<init>:()V
            putfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.formatCache:Ljava/util/Map;
         3: .line 360
            aload 0 /* this */
            iload 1 /* size */
            putfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.cacheSize:I
         4: .line 361
            aload 0 /* this */
            aload 2 /* loc */
            putfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.cacheDefaultLocale:Ljava/util/Locale;
         5: .line 362
            aload 0 /* this */
            aload 3 /* parent */
            putfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.parent:Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;
         6: .line 363
            aconst_null
            astore 4 /* parentCache */
        start local 4 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache parentCache
         7: .line 364
            aload 3 /* parent */
            ifnull 14
         8: .line 365
            aload 3 /* parent */
            dup
            astore 5
            monitorenter
         9: .line 366
            aload 3 /* parent */
            aconst_null
            aconst_null
            invokevirtual org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.getCache:(Ljava/lang/String;Ljava/util/Locale;)Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
            astore 4 /* parentCache */
        10: .line 365
            aload 5
            monitorexit
        11: goto 14
      StackMap locals: org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache int java.util.Locale org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache
      StackMap stack: java.lang.Throwable
        12: aload 5
            monitorexit
        13: athrow
        14: .line 369
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            new org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache
            dup
            aload 0 /* this */
            aload 4 /* parentCache */
            invokespecial org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache.<init>:(Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;)V
            putfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.cLFCache:Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
        15: .line 370
            return
        end local 4 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache parentCache
        end local 3 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache parent
        end local 2 // java.util.Locale loc
        end local 1 // int size
        end local 0 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   16     0         this  Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;
            0   16     1         size  I
            0   16     2          loc  Ljava/util/Locale;
            0   16     3       parent  Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;
            7   16     4  parentCache  Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
      Exception table:
        from    to  target  type
           9    11      12  any
          12    13      12  any
    MethodParameters:
        Name  Flags
      size    
      loc     
      parent  

  private org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache getCache(java.lang.String, java.util.Locale);
    descriptor: (Ljava/lang/String;Ljava/util/Locale;)Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=6, locals=6, args_size=3
        start local 0 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache this
        start local 1 // java.lang.String format
        start local 2 // java.util.Locale loc
         0: .line 374
            aload 1 /* format */
            ifnonnull 3
         1: .line 375
            aload 0 /* this */
            getfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.cLFCache:Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
            astore 3 /* cache */
        start local 3 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache cache
         2: .line 376
            goto 15
        end local 3 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache cache
         3: .line 377
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.formatCache:Ljava/util/Map;
            aload 1 /* format */
            invokeinterface java.util.Map.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache
            astore 3 /* cache */
        start local 3 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache cache
         4: .line 378
            aload 3 /* cache */
            ifnonnull 15
         5: .line 379
            aconst_null
            astore 4 /* parentCache */
        start local 4 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache parentCache
         6: .line 380
            aload 0 /* this */
            getfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.parent:Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;
            ifnull 13
         7: .line 381
            aload 0 /* this */
            getfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.parent:Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;
            dup
            astore 5
            monitorenter
         8: .line 382
            aload 0 /* this */
            getfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.parent:Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;
            aload 1 /* format */
            aload 2 /* loc */
            invokevirtual org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.getCache:(Ljava/lang/String;Ljava/util/Locale;)Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
            astore 4 /* parentCache */
         9: .line 381
            aload 5
            monitorexit
        10: goto 13
      StackMap locals: org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache java.lang.String java.util.Locale org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache
      StackMap stack: java.lang.Throwable
        11: aload 5
            monitorexit
        12: athrow
        13: .line 385
      StackMap locals:
      StackMap stack:
            new org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache
            dup
            aload 0 /* this */
            aload 1 /* format */
            aload 2 /* loc */
            aload 4 /* parentCache */
            invokespecial org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache.<init>:(Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;Ljava/lang/String;Ljava/util/Locale;Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;)V
            astore 3 /* cache */
        14: .line 386
            aload 0 /* this */
            getfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.formatCache:Ljava/util/Map;
            aload 1 /* format */
            aload 3 /* cache */
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        end local 4 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache parentCache
        15: .line 389
      StackMap locals:
      StackMap stack:
            aload 3 /* cache */
            areturn
        end local 3 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache cache
        end local 2 // java.util.Locale loc
        end local 1 // java.lang.String format
        end local 0 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   16     0         this  Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;
            0   16     1       format  Ljava/lang/String;
            0   16     2          loc  Ljava/util/Locale;
            2    3     3        cache  Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
            4   16     3        cache  Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
            6   15     4  parentCache  Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
      Exception table:
        from    to  target  type
           8    10      11  any
          11    12      11  any
    MethodParameters:
        Name  Flags
      format  
      loc     

  public java.lang.String getFormat(long);
    descriptor: (J)Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=2
        start local 0 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache this
        start local 1 // long time
         0: .line 393
            aload 0 /* this */
            getfield org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.cLFCache:Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
            lload 1 /* time */
            invokevirtual org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache.getFormatInternal:(J)Ljava/lang/String;
            areturn
        end local 1 // long time
        end local 0 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;
            0    1     1  time  J
    MethodParameters:
      Name  Flags
      time  

  public java.lang.String getFormat(java.lang.String, java.util.Locale, long);
    descriptor: (Ljava/lang/String;Ljava/util/Locale;J)Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=5, args_size=4
        start local 0 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache this
        start local 1 // java.lang.String format
        start local 2 // java.util.Locale loc
        start local 3 // long time
         0: .line 397
            aload 0 /* this */
            aload 1 /* format */
            aload 2 /* loc */
            invokevirtual org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache.getCache:(Ljava/lang/String;Ljava/util/Locale;)Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache$Cache;
            lload 3 /* time */
            invokevirtual org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache.getFormatInternal:(J)Ljava/lang/String;
            areturn
        end local 3 // long time
        end local 2 // java.util.Locale loc
        end local 1 // java.lang.String format
        end local 0 // org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    1     0    this  Lorg/apache/catalina/valves/AbstractAccessLogValve$DateFormatCache;
            0    1     1  format  Ljava/lang/String;
            0    1     2     loc  Ljava/util/Locale;
            0    1     3    time  J
    MethodParameters:
        Name  Flags
      format  
      loc     
      time    
}
SourceFile: "AbstractAccessLogValve.java"
NestHost: org.apache.catalina.valves.AbstractAccessLogValve
InnerClasses:
  protected DateFormatCache = org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache of org.apache.catalina.valves.AbstractAccessLogValve
  protected Cache = org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache$Cache of org.apache.catalina.valves.AbstractAccessLogValve$DateFormatCache