public class sun.net.ExtendedOptionsHelper
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: sun.net.ExtendedOptionsHelper
  super_class: java.lang.Object
{
  private static final boolean keepAliveOptSupported;
    descriptor: Z
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private static final java.util.Set<java.net.SocketOption<?>> extendedOptions;
    descriptor: Ljava/util/Set;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    Signature: Ljava/util/Set<Ljava/net/SocketOption<*>;>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 38
            invokestatic sun.net.ExtendedOptionsImpl.keepAliveOptionsSupported:()Z
         1: .line 37
            putstatic sun.net.ExtendedOptionsHelper.keepAliveOptSupported:Z
         2: .line 39
            invokestatic sun.net.ExtendedOptionsHelper.options:()Ljava/util/Set;
            putstatic sun.net.ExtendedOptionsHelper.extendedOptions:Ljava/util/Set;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // sun.net.ExtendedOptionsHelper this
         0: .line 35
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // sun.net.ExtendedOptionsHelper this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lsun/net/ExtendedOptionsHelper;

  private static java.util.Set<java.net.SocketOption<?>> options();
    descriptor: ()Ljava/util/Set;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=0
         0: .line 42
            new java.util.HashSet
            dup
            invokespecial java.util.HashSet.<init>:()V
            astore 0 /* options */
        start local 0 // java.util.Set options
         1: .line 43
            getstatic sun.net.ExtendedOptionsHelper.keepAliveOptSupported:Z
            ifeq 5
         2: .line 44
            aload 0 /* options */
            getstatic jdk.net.ExtendedSocketOptions.TCP_KEEPCOUNT:Ljava/net/SocketOption;
            invokeinterface java.util.Set.add:(Ljava/lang/Object;)Z
            pop
         3: .line 45
            aload 0 /* options */
            getstatic jdk.net.ExtendedSocketOptions.TCP_KEEPIDLE:Ljava/net/SocketOption;
            invokeinterface java.util.Set.add:(Ljava/lang/Object;)Z
            pop
         4: .line 46
            aload 0 /* options */
            getstatic jdk.net.ExtendedSocketOptions.TCP_KEEPINTERVAL:Ljava/net/SocketOption;
            invokeinterface java.util.Set.add:(Ljava/lang/Object;)Z
            pop
         5: .line 48
      StackMap locals: java.util.Set
      StackMap stack:
            aload 0 /* options */
            invokestatic java.util.Collections.unmodifiableSet:(Ljava/util/Set;)Ljava/util/Set;
            areturn
        end local 0 // java.util.Set options
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            1    6     0  options  Ljava/util/Set<Ljava/net/SocketOption<*>;>;
    Signature: ()Ljava/util/Set<Ljava/net/SocketOption<*>;>;

  public static java.util.Set<java.net.SocketOption<?>> keepAliveOptions();
    descriptor: ()Ljava/util/Set;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 52
            getstatic sun.net.ExtendedOptionsHelper.extendedOptions:Ljava/util/Set;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    Signature: ()Ljava/util/Set<Ljava/net/SocketOption<*>;>;
}
SourceFile: "ExtendedOptionsHelper.java"