http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8.
  • The Legion of the Bouncy Castle Inc. 
class org.bouncycastle.asn1.DateUtil
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.bouncycastle.asn1.DateUtil
  super_class: java.lang.Object
{
  private static java.lang.Long ZERO;
    descriptor: Ljava/lang/Long;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  private static final java.util.Map localeCache;
    descriptor: Ljava/util/Map;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  static java.util.Locale EN_Locale;
    descriptor: Ljava/util/Locale;
    flags: (0x0008) ACC_STATIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 12
            lconst_0
            invokestatic org.bouncycastle.asn1.DateUtil.longValueOf:(J)Ljava/lang/Long;
            putstatic org.bouncycastle.asn1.DateUtil.ZERO:Ljava/lang/Long;
         1: .line 14
            new java.util.HashMap
            dup
            invokespecial java.util.HashMap.<init>:()V
            putstatic org.bouncycastle.asn1.DateUtil.localeCache:Ljava/util/Map;
         2: .line 16
            invokestatic org.bouncycastle.asn1.DateUtil.forEN:()Ljava/util/Locale;
            putstatic org.bouncycastle.asn1.DateUtil.EN_Locale:Ljava/util/Locale;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.DateUtil this
         0: .line 10
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.bouncycastle.asn1.DateUtil this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/asn1/DateUtil;

  private static java.util.Locale forEN();
    descriptor: ()Ljava/util/Locale;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=0
         0: .line 20
            ldc "en"
            invokestatic java.util.Locale.getDefault:()Ljava/util/Locale;
            invokevirtual java.util.Locale.getLanguage:()Ljava/lang/String;
            invokevirtual java.lang.String.equalsIgnoreCase:(Ljava/lang/String;)Z
            ifeq 2
         1: .line 22
            invokestatic java.util.Locale.getDefault:()Ljava/util/Locale;
            areturn
         2: .line 25
      StackMap locals:
      StackMap stack:
            invokestatic java.util.Locale.getAvailableLocales:()[Ljava/util/Locale;
            astore 0 /* locales */
        start local 0 // java.util.Locale[] locales
         3: .line 26
            iconst_0
            istore 1 /* i */
        start local 1 // int i
         4: goto 8
         5: .line 28
      StackMap locals: java.util.Locale[] int
      StackMap stack:
            ldc "en"
            aload 0 /* locales */
            iload 1 /* i */
            aaload
            invokevirtual java.util.Locale.getLanguage:()Ljava/lang/String;
            invokevirtual java.lang.String.equalsIgnoreCase:(Ljava/lang/String;)Z
            ifeq 7
         6: .line 30
            aload 0 /* locales */
            iload 1 /* i */
            aaload
            areturn
         7: .line 26
      StackMap locals:
      StackMap stack:
            iinc 1 /* i */ 1
      StackMap locals:
      StackMap stack:
         8: iload 1 /* i */
            aload 0 /* locales */
            arraylength
            if_icmpne 5
        end local 1 // int i
         9: .line 34
            invokestatic java.util.Locale.getDefault:()Ljava/util/Locale;
            areturn
        end local 0 // java.util.Locale[] locales
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            3   10     0  locales  [Ljava/util/Locale;
            4    9     1        i  I

  static java.util.Date epochAdjust(java.util.Date);
    descriptor: (Ljava/util/Date;)Ljava/util/Date;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=6, locals=7, args_size=1
        start local 0 // java.util.Date date
         0: .line 40
            invokestatic java.util.Locale.getDefault:()Ljava/util/Locale;
            astore 1 /* locale */
        start local 1 // java.util.Locale locale
         1: .line 41
            aload 1 /* locale */
            ifnonnull 3
         2: .line 43
            aload 0 /* date */
            areturn
         3: .line 46
      StackMap locals: java.util.Locale
      StackMap stack:
            getstatic org.bouncycastle.asn1.DateUtil.localeCache:Ljava/util/Map;
            dup
            astore 2
            monitorenter
         4: .line 48
            getstatic org.bouncycastle.asn1.DateUtil.localeCache:Ljava/util/Map;
            aload 1 /* locale */
            invokeinterface java.util.Map.get:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast java.lang.Long
            astore 3 /* adj */
        start local 3 // java.lang.Long adj
         5: .line 50
            aload 3 /* adj */
            ifnonnull 13
         6: .line 52
            new java.text.SimpleDateFormat
            dup
            ldc "yyyyMMddHHmmssz"
            invokespecial java.text.SimpleDateFormat.<init>:(Ljava/lang/String;)V
            astore 4 /* dateF */
        start local 4 // java.text.SimpleDateFormat dateF
         7: .line 53
            aload 4 /* dateF */
            ldc "19700101000000GMT+00:00"
            invokevirtual java.text.SimpleDateFormat.parse:(Ljava/lang/String;)Ljava/util/Date;
            invokevirtual java.util.Date.getTime:()J
            lstore 5 /* v */
        start local 5 // long v
         8: .line 55
            lload 5 /* v */
            lconst_0
            lcmp
            ifne 11
         9: .line 57
            getstatic org.bouncycastle.asn1.DateUtil.ZERO:Ljava/lang/Long;
            astore 3 /* adj */
        10: .line 58
            goto 12
        11: .line 61
      StackMap locals: java.util.Date java.util.Locale java.util.Map java.lang.Long java.text.SimpleDateFormat long
      StackMap stack:
            lload 5 /* v */
            invokestatic org.bouncycastle.asn1.DateUtil.longValueOf:(J)Ljava/lang/Long;
            astore 3 /* adj */
        12: .line 64
      StackMap locals:
      StackMap stack:
            getstatic org.bouncycastle.asn1.DateUtil.localeCache:Ljava/util/Map;
            aload 1 /* locale */
            aload 3 /* adj */
            invokeinterface java.util.Map.put:(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;
            pop
        end local 5 // long v
        end local 4 // java.text.SimpleDateFormat dateF
        13: .line 67
      StackMap locals:
      StackMap stack:
            aload 3 /* adj */
            getstatic org.bouncycastle.asn1.DateUtil.ZERO:Ljava/lang/Long;
            if_acmpeq 16
        14: .line 69
            new java.util.Date
            dup
            aload 0 /* date */
            invokevirtual java.util.Date.getTime:()J
            aload 3 /* adj */
            invokevirtual java.lang.Long.longValue:()J
            lsub
            invokespecial java.util.Date.<init>:(J)V
            aload 2
            monitorexit
        15: areturn
        16: .line 72
      StackMap locals:
      StackMap stack:
            aload 0 /* date */
            aload 2
            monitorexit
        17: areturn
        end local 3 // java.lang.Long adj
        18: .line 46
      StackMap locals: java.util.Date java.util.Locale java.util.Map
      StackMap stack: java.lang.Throwable
            aload 2
            monitorexit
        19: athrow
        end local 1 // java.util.Locale locale
        end local 0 // java.util.Date date
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0   20     0    date  Ljava/util/Date;
            1   20     1  locale  Ljava/util/Locale;
            5   18     3     adj  Ljava/lang/Long;
            7   13     4   dateF  Ljava/text/SimpleDateFormat;
            8   13     5       v  J
      Exception table:
        from    to  target  type
           4    15      18  any
          16    17      18  any
          18    19      18  any
    Exceptions:
      throws java.text.ParseException
    MethodParameters:
      Name  Flags
      date  

  private static java.lang.Long longValueOf(long);
    descriptor: (J)Ljava/lang/Long;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // long v
         0: .line 78
            lload 0 /* v */
            invokestatic java.lang.Long.valueOf:(J)Ljava/lang/Long;
            areturn
        end local 0 // long v
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0     v  J
    MethodParameters:
      Name  Flags
      v     
}
SourceFile: "DateUtil.java"