http://www.sparetimelabs.com/purejavacomm/purejavacomm.php: PureJavaComm is an Application Programmin Interface (API) for accessing serial ports from Java. PureJavaComm aims to be a drop-in replacement for Sun's (now Oracle) abandoned JavaComm and an easier to deploy alternative to RXTX.
  • Kustaa Nyholm 
class jtermios.windows.JTermiosImpl$FDSetImpl implements jtermios.JTermios$FDSet
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: jtermios.windows.JTermiosImpl$FDSetImpl
  super_class: java.lang.Object
{
  static final int FD_SET_SIZE;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 256

  static final int NFBBITS;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 32

  int[] bits;
    descriptor: [I
    flags: (0x0000) 

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // jtermios.windows.JTermiosImpl$FDSetImpl this
         0: .line 260
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 263
            aload 0 /* this */
            bipush 8
            newarray 10
            putfield jtermios.windows.JTermiosImpl$FDSetImpl.bits:[I
         2: .line 260
            return
        end local 0 // jtermios.windows.JTermiosImpl$FDSetImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Ljtermios/windows/JTermiosImpl$FDSetImpl;

  public void FD_CLR(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=2, args_size=2
        start local 0 // jtermios.windows.JTermiosImpl$FDSetImpl this
        start local 1 // int fd
         0: .line 266
            aload 0 /* this */
            getfield jtermios.windows.JTermiosImpl$FDSetImpl.bits:[I
            iload 1 /* fd */
            bipush 32
            idiv
            dup2
            iaload
            iconst_1
            iload 1 /* fd */
            bipush 32
            irem
            ishl
            iconst_m1
            ixor
            iand
            iastore
         1: .line 267
            return
        end local 1 // int fd
        end local 0 // jtermios.windows.JTermiosImpl$FDSetImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Ljtermios/windows/JTermiosImpl$FDSetImpl;
            0    2     1    fd  I
    MethodParameters:
      Name  Flags
      fd    

  public boolean FD_ISSET(int);
    descriptor: (I)Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // jtermios.windows.JTermiosImpl$FDSetImpl this
        start local 1 // int fd
         0: .line 270
            aload 0 /* this */
            getfield jtermios.windows.JTermiosImpl$FDSetImpl.bits:[I
            iload 1 /* fd */
            bipush 32
            idiv
            iaload
            iconst_1
            iload 1 /* fd */
            bipush 32
            irem
            ishl
            iand
            ifeq 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 1 // int fd
        end local 0 // jtermios.windows.JTermiosImpl$FDSetImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Ljtermios/windows/JTermiosImpl$FDSetImpl;
            0    2     1    fd  I
    MethodParameters:
      Name  Flags
      fd    

  public void FD_SET(int);
    descriptor: (I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=2, args_size=2
        start local 0 // jtermios.windows.JTermiosImpl$FDSetImpl this
        start local 1 // int fd
         0: .line 274
            aload 0 /* this */
            getfield jtermios.windows.JTermiosImpl$FDSetImpl.bits:[I
            iload 1 /* fd */
            bipush 32
            idiv
            dup2
            iaload
            iconst_1
            iload 1 /* fd */
            bipush 32
            irem
            ishl
            ior
            iastore
         1: .line 275
            return
        end local 1 // int fd
        end local 0 // jtermios.windows.JTermiosImpl$FDSetImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Ljtermios/windows/JTermiosImpl$FDSetImpl;
            0    2     1    fd  I
    MethodParameters:
      Name  Flags
      fd    

  public void FD_ZERO();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // jtermios.windows.JTermiosImpl$FDSetImpl this
         0: .line 278
            aload 0 /* this */
            getfield jtermios.windows.JTermiosImpl$FDSetImpl.bits:[I
            iconst_0
            invokestatic java.util.Arrays.fill:([II)V
         1: .line 279
            return
        end local 0 // jtermios.windows.JTermiosImpl$FDSetImpl this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Ljtermios/windows/JTermiosImpl$FDSetImpl;
}
SourceFile: "JTermiosImpl.java"
NestHost: jtermios.windows.JTermiosImpl
InnerClasses:
  public abstract FDSet = jtermios.JTermios$FDSet of jtermios.JTermios
  private FDSetImpl = jtermios.windows.JTermiosImpl$FDSetImpl of jtermios.windows.JTermiosImpl