public class sun.net.dns.ResolverConfigurationImpl extends sun.net.dns.ResolverConfiguration
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: sun.net.dns.ResolverConfigurationImpl
  super_class: sun.net.dns.ResolverConfiguration
{
  private static java.lang.Object lock;
    descriptor: Ljava/lang/Object;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  private static long lastRefresh;
    descriptor: J
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC

  private static final int TIMEOUT;
    descriptor: I
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 300000

  private final sun.net.dns.ResolverConfiguration$Options opts;
    descriptor: Lsun/net/dns/ResolverConfiguration$Options;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private java.util.LinkedList<java.lang.String> searchlist;
    descriptor: Ljava/util/LinkedList;
    flags: (0x0002) ACC_PRIVATE
    Signature: Ljava/util/LinkedList<Ljava/lang/String;>;

  private java.util.LinkedList<java.lang.String> nameservers;
    descriptor: Ljava/util/LinkedList;
    flags: (0x0002) ACC_PRIVATE
    Signature: Ljava/util/LinkedList<Ljava/lang/String;>;

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 40
            ldc Lsun/net/dns/ResolverConfigurationImpl;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic sun.net.dns.ResolverConfigurationImpl.$assertionsDisabled:Z
         3: .line 44
            new java.lang.Object
            dup
            invokespecial java.lang.Object.<init>:()V
            putstatic sun.net.dns.ResolverConfigurationImpl.lock:Ljava/lang/Object;
         4: .line 47
            ldc -1
            putstatic sun.net.dns.ResolverConfigurationImpl.lastRefresh:J
         5: .line 263
            new sun.net.dns.ResolverConfigurationImpl$1
            dup
            invokespecial sun.net.dns.ResolverConfigurationImpl$1.<init>:()V
         6: .line 262
            invokestatic java.security.AccessController.doPrivileged:(Ljava/security/PrivilegedAction;)Ljava/lang/Object;
            pop
         7: .line 269
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  private java.util.LinkedList<java.lang.String> resolvconf(java.lang.String, int, int);
    descriptor: (Ljava/lang/String;II)Ljava/util/LinkedList;
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=5, locals=11, args_size=4
        start local 0 // sun.net.dns.ResolverConfigurationImpl this
        start local 1 // java.lang.String keyword
        start local 2 // int maxperkeyword
        start local 3 // int maxkeywords
         0: .line 63
            new java.util.LinkedList
            dup
            invokespecial java.util.LinkedList.<init>:()V
            astore 4 /* ll */
        start local 4 // java.util.LinkedList ll
         1: .line 67
            new java.io.BufferedReader
            dup
            new java.io.FileReader
            dup
            ldc "/etc/resolv.conf"
            invokespecial java.io.FileReader.<init>:(Ljava/lang/String;)V
            invokespecial java.io.BufferedReader.<init>:(Ljava/io/Reader;)V
         2: .line 66
            astore 5 /* in */
        start local 5 // java.io.BufferedReader in
         3: .line 69
            goto 33
        start local 6 // java.lang.String line
         4: .line 70
      StackMap locals: java.util.LinkedList java.io.BufferedReader java.lang.String
      StackMap stack:
            iload 2 /* maxperkeyword */
            istore 7 /* maxvalues */
        start local 7 // int maxvalues
         5: .line 71
            aload 6 /* line */
            invokevirtual java.lang.String.isEmpty:()Z
            ifeq 7
         6: .line 72
            goto 33
         7: .line 73
      StackMap locals: int
      StackMap stack:
            aload 6 /* line */
            iconst_0
            invokevirtual java.lang.String.charAt:(I)C
            bipush 35
            if_icmpeq 33
            aload 6 /* line */
            iconst_0
            invokevirtual java.lang.String.charAt:(I)C
            bipush 59
            if_icmpne 9
         8: .line 74
            goto 33
         9: .line 75
      StackMap locals:
      StackMap stack:
            aload 6 /* line */
            aload 1 /* keyword */
            invokevirtual java.lang.String.startsWith:(Ljava/lang/String;)Z
            ifne 11
        10: .line 76
            goto 33
        11: .line 77
      StackMap locals:
      StackMap stack:
            aload 6 /* line */
            aload 1 /* keyword */
            invokevirtual java.lang.String.length:()I
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            astore 8 /* value */
        start local 8 // java.lang.String value
        12: .line 78
            aload 8 /* value */
            invokevirtual java.lang.String.isEmpty:()Z
            ifeq 14
        13: .line 79
            goto 33
        14: .line 80
      StackMap locals: java.lang.String
      StackMap stack:
            aload 8 /* value */
            iconst_0
            invokevirtual java.lang.String.charAt:(I)C
            bipush 32
            if_icmpeq 16
            aload 8 /* value */
            iconst_0
            invokevirtual java.lang.String.charAt:(I)C
            bipush 9
            if_icmpeq 16
        15: .line 81
            goto 33
        16: .line 82
      StackMap locals:
      StackMap stack:
            new java.util.StringTokenizer
            dup
            aload 8 /* value */
            ldc " \t"
            invokespecial java.util.StringTokenizer.<init>:(Ljava/lang/String;Ljava/lang/String;)V
            astore 9 /* st */
        start local 9 // java.util.StringTokenizer st
        17: .line 83
            goto 30
        18: .line 84
      StackMap locals: java.util.StringTokenizer
      StackMap stack:
            aload 9 /* st */
            invokevirtual java.util.StringTokenizer.nextToken:()Ljava/lang/String;
            astore 10 /* val */
        start local 10 // java.lang.String val
        19: .line 85
            aload 10 /* val */
            iconst_0
            invokevirtual java.lang.String.charAt:(I)C
            bipush 35
            if_icmpeq 31
            aload 10 /* val */
            iconst_0
            invokevirtual java.lang.String.charAt:(I)C
            bipush 59
            if_icmpne 21
        20: .line 86
            goto 31
        21: .line 88
      StackMap locals: java.lang.String
      StackMap stack:
            ldc "nameserver"
            aload 1 /* keyword */
            invokevirtual java.lang.String.equals:(Ljava/lang/Object;)Z
            ifeq 27
        22: .line 89
            aload 10 /* val */
            bipush 58
            invokevirtual java.lang.String.indexOf:(I)I
            iflt 27
        23: .line 90
            aload 10 /* val */
            bipush 46
            invokevirtual java.lang.String.indexOf:(I)I
            ifge 27
        24: .line 91
            aload 10 /* val */
            bipush 91
            invokevirtual java.lang.String.indexOf:(I)I
            ifge 27
        25: .line 92
            aload 10 /* val */
            bipush 93
            invokevirtual java.lang.String.indexOf:(I)I
            ifge 27
        26: .line 94
            new java.lang.StringBuilder
            dup
            ldc "["
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 10 /* val */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            ldc "]"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 10 /* val */
        27: .line 97
      StackMap locals:
      StackMap stack:
            aload 4 /* ll */
            aload 10 /* val */
            invokevirtual java.util.LinkedList.add:(Ljava/lang/Object;)Z
            pop
        28: .line 98
            iinc 7 /* maxvalues */ -1
            iload 7 /* maxvalues */
            ifne 30
        29: .line 99
            goto 31
        end local 10 // java.lang.String val
        30: .line 83
      StackMap locals:
      StackMap stack:
            aload 9 /* st */
            invokevirtual java.util.StringTokenizer.hasMoreTokens:()Z
            ifne 18
        31: .line 102
      StackMap locals:
      StackMap stack:
            iinc 3 /* maxkeywords */ -1
            iload 3 /* maxkeywords */
            ifne 33
        32: .line 103
            goto 35
        end local 9 // java.util.StringTokenizer st
        end local 8 // java.lang.String value
        end local 7 // int maxvalues
        end local 6 // java.lang.String line
        33: .line 69
      StackMap locals: sun.net.dns.ResolverConfigurationImpl java.lang.String int int java.util.LinkedList java.io.BufferedReader
      StackMap stack:
            aload 5 /* in */
            invokevirtual java.io.BufferedReader.readLine:()Ljava/lang/String;
            dup
            astore 6 /* line */
        start local 6 // java.lang.String line
        34: ifnonnull 4
        35: .line 106
      StackMap locals: java.lang.String
      StackMap stack:
            aload 5 /* in */
            invokevirtual java.io.BufferedReader.close:()V
        end local 6 // java.lang.String line
        end local 5 // java.io.BufferedReader in
        36: .line 107
            goto 38
      StackMap locals: sun.net.dns.ResolverConfigurationImpl java.lang.String int int java.util.LinkedList
      StackMap stack: java.io.IOException
        37: pop
        38: .line 111
      StackMap locals:
      StackMap stack:
            aload 4 /* ll */
            areturn
        end local 4 // java.util.LinkedList ll
        end local 3 // int maxkeywords
        end local 2 // int maxperkeyword
        end local 1 // java.lang.String keyword
        end local 0 // sun.net.dns.ResolverConfigurationImpl this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0   39     0           this  Lsun/net/dns/ResolverConfigurationImpl;
            0   39     1        keyword  Ljava/lang/String;
            0   39     2  maxperkeyword  I
            0   39     3    maxkeywords  I
            1   39     4             ll  Ljava/util/LinkedList<Ljava/lang/String;>;
            3   36     5             in  Ljava/io/BufferedReader;
            4   33     6           line  Ljava/lang/String;
           34   36     6           line  Ljava/lang/String;
            5   33     7      maxvalues  I
           12   33     8          value  Ljava/lang/String;
           17   33     9             st  Ljava/util/StringTokenizer;
           19   30    10            val  Ljava/lang/String;
      Exception table:
        from    to  target  type
           1    36      37  Class java.io.IOException
    Signature: (Ljava/lang/String;II)Ljava/util/LinkedList<Ljava/lang/String;>;
    MethodParameters:
               Name  Flags
      keyword        
      maxperkeyword  
      maxkeywords    

  private void loadConfig();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=4, locals=3, args_size=1
        start local 0 // sun.net.dns.ResolverConfigurationImpl this
         0: .line 121
            getstatic sun.net.dns.ResolverConfigurationImpl.$assertionsDisabled:Z
            ifne 1
            getstatic sun.net.dns.ResolverConfigurationImpl.lock:Ljava/lang/Object;
            invokestatic java.lang.Thread.holdsLock:(Ljava/lang/Object;)Z
            ifne 1
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         1: .line 124
      StackMap locals:
      StackMap stack:
            getstatic sun.net.dns.ResolverConfigurationImpl.lastRefresh:J
            lconst_0
            lcmp
            iflt 5
         2: .line 125
            invokestatic java.lang.System.currentTimeMillis:()J
            lstore 1 /* currTime */
        start local 1 // long currTime
         3: .line 126
            lload 1 /* currTime */
            getstatic sun.net.dns.ResolverConfigurationImpl.lastRefresh:J
            lsub
            ldc 300000
            lcmp
            ifge 5
         4: .line 127
            return
        end local 1 // long currTime
         5: .line 132
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
         6: .line 134
            new sun.net.dns.ResolverConfigurationImpl$2
            dup
            aload 0 /* this */
            invokespecial sun.net.dns.ResolverConfigurationImpl$2.<init>:(Lsun/net/dns/ResolverConfigurationImpl;)V
         7: .line 133
            invokestatic java.security.AccessController.doPrivileged:(Ljava/security/PrivilegedAction;)Ljava/lang/Object;
            checkcast java.util.LinkedList
         8: .line 132
            putfield sun.net.dns.ResolverConfigurationImpl.nameservers:Ljava/util/LinkedList;
         9: .line 143
            aload 0 /* this */
            aload 0 /* this */
            invokevirtual sun.net.dns.ResolverConfigurationImpl.getSearchList:()Ljava/util/LinkedList;
            putfield sun.net.dns.ResolverConfigurationImpl.searchlist:Ljava/util/LinkedList;
        10: .line 146
            invokestatic java.lang.System.currentTimeMillis:()J
            putstatic sun.net.dns.ResolverConfigurationImpl.lastRefresh:J
        11: .line 147
            return
        end local 0 // sun.net.dns.ResolverConfigurationImpl this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   12     0      this  Lsun/net/dns/ResolverConfigurationImpl;
            3    5     1  currTime  J

  private java.util.LinkedList<java.lang.String> getSearchList();
    descriptor: ()Ljava/util/LinkedList;
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=3, locals=4, args_size=1
        start local 0 // sun.net.dns.ResolverConfigurationImpl this
         0: .line 159
            new sun.net.dns.ResolverConfigurationImpl$3
            dup
            aload 0 /* this */
            invokespecial sun.net.dns.ResolverConfigurationImpl$3.<init>:(Lsun/net/dns/ResolverConfigurationImpl;)V
         1: .line 158
            invokestatic java.security.AccessController.doPrivileged:(Ljava/security/PrivilegedAction;)Ljava/lang/Object;
            checkcast java.util.LinkedList
            astore 1 /* sl */
        start local 1 // java.util.LinkedList sl
         2: .line 174
            aload 1 /* sl */
            ifnull 4
         3: .line 175
            aload 1 /* sl */
            areturn
         4: .line 183
      StackMap locals: java.util.LinkedList
      StackMap stack:
            invokestatic sun.net.dns.ResolverConfigurationImpl.localDomain0:()Ljava/lang/String;
            astore 2 /* localDomain */
        start local 2 // java.lang.String localDomain
         5: .line 184
            aload 2 /* localDomain */
            ifnull 9
            aload 2 /* localDomain */
            invokevirtual java.lang.String.isEmpty:()Z
            ifne 9
         6: .line 185
            new java.util.LinkedList
            dup
            invokespecial java.util.LinkedList.<init>:()V
            astore 1 /* sl */
         7: .line 186
            aload 1 /* sl */
            aload 2 /* localDomain */
            invokevirtual java.util.LinkedList.add:(Ljava/lang/Object;)Z
            pop
         8: .line 187
            aload 1 /* sl */
            areturn
         9: .line 193
      StackMap locals: java.lang.String
      StackMap stack:
            new sun.net.dns.ResolverConfigurationImpl$4
            dup
            aload 0 /* this */
            invokespecial sun.net.dns.ResolverConfigurationImpl$4.<init>:(Lsun/net/dns/ResolverConfigurationImpl;)V
        10: .line 192
            invokestatic java.security.AccessController.doPrivileged:(Ljava/security/PrivilegedAction;)Ljava/lang/Object;
            checkcast java.util.LinkedList
            astore 1 /* sl */
        11: .line 205
            aload 1 /* sl */
            ifnull 13
        12: .line 206
            aload 1 /* sl */
            areturn
        13: .line 212
      StackMap locals:
      StackMap stack:
            new java.util.LinkedList
            dup
            invokespecial java.util.LinkedList.<init>:()V
            astore 1 /* sl */
        14: .line 213
            invokestatic sun.net.dns.ResolverConfigurationImpl.fallbackDomain0:()Ljava/lang/String;
            astore 3 /* domain */
        start local 3 // java.lang.String domain
        15: .line 214
            aload 3 /* domain */
            ifnull 17
            aload 3 /* domain */
            invokevirtual java.lang.String.isEmpty:()Z
            ifne 17
        16: .line 215
            aload 1 /* sl */
            aload 3 /* domain */
            invokevirtual java.util.LinkedList.add:(Ljava/lang/Object;)Z
            pop
        17: .line 218
      StackMap locals: java.lang.String
      StackMap stack:
            aload 1 /* sl */
            areturn
        end local 3 // java.lang.String domain
        end local 2 // java.lang.String localDomain
        end local 1 // java.util.LinkedList sl
        end local 0 // sun.net.dns.ResolverConfigurationImpl this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   18     0         this  Lsun/net/dns/ResolverConfigurationImpl;
            2   18     1           sl  Ljava/util/LinkedList<Ljava/lang/String;>;
            5   18     2  localDomain  Ljava/lang/String;
           15   18     3       domain  Ljava/lang/String;
    Signature: ()Ljava/util/LinkedList<Ljava/lang/String;>;

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // sun.net.dns.ResolverConfigurationImpl this
         0: .line 224
            aload 0 /* this */
            invokespecial sun.net.dns.ResolverConfiguration.<init>:()V
         1: .line 225
            aload 0 /* this */
            new sun.net.dns.OptionsImpl
            dup
            invokespecial sun.net.dns.OptionsImpl.<init>:()V
            putfield sun.net.dns.ResolverConfigurationImpl.opts:Lsun/net/dns/ResolverConfiguration$Options;
         2: .line 226
            return
        end local 0 // sun.net.dns.ResolverConfigurationImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lsun/net/dns/ResolverConfigurationImpl;

  public java.util.List<java.lang.String> searchlist();
    descriptor: ()Ljava/util/List;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // sun.net.dns.ResolverConfigurationImpl this
         0: .line 230
            getstatic sun.net.dns.ResolverConfigurationImpl.lock:Ljava/lang/Object;
            dup
            astore 1
            monitorenter
         1: .line 231
            aload 0 /* this */
            invokevirtual sun.net.dns.ResolverConfigurationImpl.loadConfig:()V
         2: .line 234
            aload 0 /* this */
            getfield sun.net.dns.ResolverConfigurationImpl.searchlist:Ljava/util/LinkedList;
            invokevirtual java.util.LinkedList.clone:()Ljava/lang/Object;
            checkcast java.util.List
            aload 1
            monitorexit
         3: areturn
         4: .line 230
      StackMap locals: sun.net.dns.ResolverConfigurationImpl java.lang.Object
      StackMap stack: java.lang.Throwable
            aload 1
            monitorexit
         5: athrow
        end local 0 // sun.net.dns.ResolverConfigurationImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lsun/net/dns/ResolverConfigurationImpl;
      Exception table:
        from    to  target  type
           1     3       4  any
           4     5       4  any
    Signature: ()Ljava/util/List<Ljava/lang/String;>;

  public java.util.List<java.lang.String> nameservers();
    descriptor: ()Ljava/util/List;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // sun.net.dns.ResolverConfigurationImpl this
         0: .line 240
            getstatic sun.net.dns.ResolverConfigurationImpl.lock:Ljava/lang/Object;
            dup
            astore 1
            monitorenter
         1: .line 241
            aload 0 /* this */
            invokevirtual sun.net.dns.ResolverConfigurationImpl.loadConfig:()V
         2: .line 245
            aload 0 /* this */
            getfield sun.net.dns.ResolverConfigurationImpl.nameservers:Ljava/util/LinkedList;
            invokevirtual java.util.LinkedList.clone:()Ljava/lang/Object;
            checkcast java.util.List
            aload 1
            monitorexit
         3: areturn
         4: .line 240
      StackMap locals: sun.net.dns.ResolverConfigurationImpl java.lang.Object
      StackMap stack: java.lang.Throwable
            aload 1
            monitorexit
         5: athrow
        end local 0 // sun.net.dns.ResolverConfigurationImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    6     0  this  Lsun/net/dns/ResolverConfigurationImpl;
      Exception table:
        from    to  target  type
           1     3       4  any
           4     5       4  any
    Signature: ()Ljava/util/List<Ljava/lang/String;>;

  public sun.net.dns.ResolverConfiguration$Options options();
    descriptor: ()Lsun/net/dns/ResolverConfiguration$Options;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // sun.net.dns.ResolverConfigurationImpl this
         0: .line 251
            aload 0 /* this */
            getfield sun.net.dns.ResolverConfigurationImpl.opts:Lsun/net/dns/ResolverConfiguration$Options;
            areturn
        end local 0 // sun.net.dns.ResolverConfigurationImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/net/dns/ResolverConfigurationImpl;

  static native java.lang.String localDomain0();
    descriptor: ()Ljava/lang/String;
    flags: (0x0108) ACC_STATIC, ACC_NATIVE

  static native java.lang.String fallbackDomain0();
    descriptor: ()Ljava/lang/String;
    flags: (0x0108) ACC_STATIC, ACC_NATIVE
}
SourceFile: "ResolverConfigurationImpl.java"
NestMembers:
  sun.net.dns.ResolverConfigurationImpl$1  sun.net.dns.ResolverConfigurationImpl$2  sun.net.dns.ResolverConfigurationImpl$3  sun.net.dns.ResolverConfigurationImpl$4
InnerClasses:
  public abstract Options = sun.net.dns.ResolverConfiguration$Options of sun.net.dns.ResolverConfiguration
  sun.net.dns.ResolverConfigurationImpl$1
  sun.net.dns.ResolverConfigurationImpl$2
  sun.net.dns.ResolverConfigurationImpl$3
  sun.net.dns.ResolverConfigurationImpl$4