IstiDataInputStream (SeisNetWatch Source Code Documentation)

java.lang.Object
- java.io.InputStream
- - java.io.FilterInputStream
  - - com.isti.util.IstiDataInputStream

All Implemented Interfaces:: java.io.Closeable, java.io.DataInput, java.lang.AutoCloseable

public class IstiDataInputStream
extends java.io.FilterInputStream
implements java.io.DataInput

Field Summary
- Fields inherited from class java.io.FilterInputStream
  in

Constructor Summary

Constructors
Constructor and Description
`IstiDataInputStream(java.io.InputStream in)` Create an IstiDataInputStream that reads from the specified InputStream.
`IstiDataInputStream(java.io.InputStream in, boolean little)` Create an IstiDataInputStream that reads from the specified InputStream.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`available()` Returns the number of bytes that can be read from this input stream without blocking.
`void`	`close()` Closes this input stream and releases any system resources associated with the stream.
`boolean`	`isBigEndian()` Determines if the default is big-endian.
`boolean`	`isLittleEndian()` Determines if the default is little-endian.
`void`	`mark(int readlimit)` Marks the current position in this input stream.
`boolean`	`markSupported()` Tests if this input stream supports the `mark` and `reset` methods.
`int`	`read()` Reads the next byte of data from this input stream.
`int`	`read(byte[] b)` Reads up to `byte.length` bytes of data from this input stream into an array of bytes.
`int`	`read(byte[] b, int off, int len)` Reads up to `len` bytes of data from this input stream into an array of bytes.
`boolean`	`readBoolean()` Reads one input byte and returns `true` if that byte is nonzero, `false` if that byte is zero.
`byte`	`readByte()` Reads and returns one input byte.
`byte[]`	`readByteArray(int length)` Reads an array of bytes.
`char`	`readChar()` Reads a 16 bit char.
`char[]`	`readCharArray(int length)` Reads an array of chars.
`double`	`readDouble()` Reads a 64 bit double.
`double[]`	`readDoubleArray(int length)` Reads an array of doubles.
`float`	`readFloat()` Reads a 32 bit float.
`float[]`	`readFloatArray(int length)` Reads an array of floats.
`void`	`readFully(byte[] b)` Reads some bytes from an input stream and stores them into the buffer array `b`.
`void`	`readFully(byte[] b, int off, int len)` Reads `len` bytes from an input stream.
`int`	`readInt()` Reads a 32 bit int.
`int[]`	`readIntArray(int length)` Reads an array of ints.
`java.lang.String`	`readLine()` Read a line of text.
`long`	`readLong()` Reads a 64 bit long.
`long[]`	`readLongArray(int length)` Reads an array of longs.
`short`	`readShort()` Reads a 16 bit short.
`short[]`	`readShortArray(int length)` Reads an array of shorts.
`int`	`readUnsignedByte()` Reads one input byte, zero-extends it to type `int`, and returns the result, which is therefore in the range `0` through `255`.
`int[]`	`readUnsignedByteArray(int length)` Reads an array of unsigned bytes.
`int`	`readUnsignedShort()` Reads an unsigned 16 bit short.
`int[]`	`readUnsignedShortArray(int length)` Reads an array of unsigned shorts.
`java.lang.String`	`readUTF()` Reads in a string that has been encoded using a modified UTF-8 format.
`static java.lang.String`	`readUTF(java.io.DataInput in)` Reads from the stream `in` a representation of a Unicode character string encoded in Java modified UTF-8 format; this string of characters is then returned as a `String`.
`void`	`reset()` Repositions this stream to the position at the time the `mark` method was last called on this input stream.
`void`	`setBigEndian(boolean big)` Sets the default to big-endian or little-endian.
`void`	`setLittleEndian(boolean little)` Sets the default to little-endian or big-endian.
`long`	`skip(long n)` Skips over and discards `n` bytes of data from the input stream.
`int`	`skipBytes(int n)` Makes an attempt to skip over `n` bytes of data from the input stream, discarding the skipped bytes.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - IstiDataInputStream
```
public IstiDataInputStream(java.io.InputStream in)
                    throws java.io.IOException,
                           java.io.StreamCorruptedException
```
    Create an IstiDataInputStream that reads from the specified InputStream. This is the same as an DataInputStream with the following changes: supports reading little-endian as well as big-endian binary data, uses a BufferedReader for the readLine method, and supports reading arrays. The default is initially big-endian.
    
    Parameters:
    
    in - the underlying InputStream from which to read
    
    Throws:
    
    java.io.StreamCorruptedException - The version or magic number are incorrect.
    
    java.io.IOException - An exception occurred in the underlying stream.
  - IstiDataInputStream
```
public IstiDataInputStream(java.io.InputStream in,
                           boolean little)
                    throws java.io.IOException,
                           java.io.StreamCorruptedException
```
    Create an IstiDataInputStream that reads from the specified InputStream. This is the same as an DataInputStream except it supports reading little-endian as well as big-endian binary data.
    
    Parameters:
    
    in - the underlying InputStream from which to read
    
    little - if true default is little-endian otherwise it is big-endian.
    
    Throws:
    
    java.io.StreamCorruptedException - The version or magic number are incorrect.
    
    java.io.IOException - An exception occurred in the underlying stream.
- Method Detail
  - isBigEndian
```
public boolean isBigEndian()
```
    Determines if the default is big-endian.
    
    Returns:
    
    true if the default is big-endian.
  - isLittleEndian
```
public boolean isLittleEndian()
```
    Determines if the default is little-endian.
    
    Returns:
    
    true if the default is little-endian.
  - setBigEndian
```
public void setBigEndian(boolean big)
```
    Sets the default to big-endian or little-endian.
    
    Parameters:
    
    big - if true default is big-endian otherwise it is little-endian.
  - setLittleEndian
```
public void setLittleEndian(boolean little)
```
    Sets the default to little-endian or big-endian.
    
    Parameters:
    
    little - if true default is little-endian otherwise it is big-endian.
  - read
```
public int read()
         throws java.io.IOException
```
    Reads the next byte of data from this input stream. The value byte is returned as an int in the range 0 to 255. If no byte is available because the end of the stream has been reached, the value -1 is returned. This method blocks until input data is available, the end of the stream is detected, or an exception is thrown.
    
    Overrides:
    
    read in class java.io.FilterInputStream
    
    Returns:
    
    the next byte of data, or -1 if the end of the stream is reached.
    
    Throws:
    
    java.io.IOException - if an I/O error occurs.
    
    See Also:
    
    FilterInputStream.in
  - read
```
public int read(byte[] b)
         throws java.io.IOException
```
    Reads up to byte.length bytes of data from this input stream into an array of bytes. This method blocks until some input is available.
    
    Overrides:
    
    read in class java.io.FilterInputStream
    
    Parameters:
    
    b - the buffer into which the data is read.
    
    Returns:
    
    the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.
    
    Throws:
    
    java.io.IOException - if an I/O error occurs.
    
    See Also:
    
    FilterInputStream.read(byte[], int, int)
  - read
```
public int read(byte[] b,
                int off,
                int len)
         throws java.io.IOException
```
    Reads up to len bytes of data from this input stream into an array of bytes. This method blocks until some input is available.
    
    Overrides:
    
    read in class java.io.FilterInputStream
    
    Parameters:
    
    b - the buffer into which the data is read.
    
    off - the start offset of the data.
    
    len - the maximum number of bytes read.
    
    Returns:
    
    the total number of bytes read into the buffer, or -1 if there is no more data because the end of the stream has been reached.
    
    Throws:
    
    java.io.IOException - if an I/O error occurs.
    
    See Also:
    
    FilterInputStream.in
  - skip
```
public long skip(long n)
          throws java.io.IOException
```
    Skips over and discards n bytes of data from the input stream. The skip method may, for a variety of reasons, end up skipping over some smaller number of bytes, possibly 0. The actual number of bytes skipped is returned.
    
    Overrides:
    
    skip in class java.io.FilterInputStream
    
    Parameters:
    
    n - the number of bytes to be skipped.
    
    Returns:
    
    the actual number of bytes skipped.
    
    Throws:
    
    java.io.IOException - if an I/O error occurs.
  - available
```
public int available()
              throws java.io.IOException
```
    Returns the number of bytes that can be read from this input stream without blocking.
    
    Overrides:
    
    available in class java.io.FilterInputStream
    
    Returns:
    
    the number of bytes that can be read from the input stream without blocking.
    
    Throws:
    
    java.io.IOException - if an I/O error occurs.
    
    See Also:
    
    FilterInputStream.in
  - close
```
public void close()
           throws java.io.IOException
```
    Closes this input stream and releases any system resources associated with the stream.
    
    Specified by:
    
    close in interface java.io.Closeable
    
    Specified by:
    
    close in interface java.lang.AutoCloseable
    
    Overrides:
    
    close in class java.io.FilterInputStream
    
    Throws:
    
    java.io.IOException - if an I/O error occurs.
    
    See Also:
    
    FilterInputStream.in
  - mark
```
public void mark(int readlimit)
```
    Marks the current position in this input stream. A subsequent call to the reset method repositions this stream at the last marked position so that subsequent reads re-read the same bytes.
    The readlimit argument tells this input stream to allow that many bytes to be read before the mark position gets invalidated.
    
    Overrides:
    
    mark in class java.io.FilterInputStream
    
    Parameters:
    
    readlimit - the maximum limit of bytes that can be read before the mark position becomes invalid.
    
    See Also:
    
    FilterInputStream.in, FilterInputStream.reset()
  - reset
```
public void reset()
           throws java.io.IOException
```
    Repositions this stream to the position at the time the mark method was last called on this input stream.
    Stream marks are intended to be used in situations where you need to read ahead a little to see what's in the stream. Often this is most easily done by invoking some general parser. If the stream is of the type handled by the parse, it just chugs along happily. If the stream is not of that type, the parser should toss an exception when it fails. If this happens within readlimit bytes, it allows the outer code to reset the stream and try another parser.
    
    Overrides:
    
    reset in class java.io.FilterInputStream
    
    Throws:
    
    java.io.IOException - if the stream has not been marked or if the mark has been invalidated.
    
    See Also:
    
    FilterInputStream.in, FilterInputStream.mark(int)
  - markSupported
```
public boolean markSupported()
```
    Tests if this input stream supports the mark and reset methods.
    
    Overrides:
    
    markSupported in class java.io.FilterInputStream
    
    Returns:
    
    true if this stream type supports the mark and reset method; false otherwise.
    
    See Also:
    
    FilterInputStream.in, InputStream.mark(int), InputStream.reset()
  - readFully
```
public void readFully(byte[] b)
               throws java.io.IOException
```
    Reads some bytes from an input stream and stores them into the buffer array b. The number of bytes read is equal to the length of b.
    This method blocks until one of the following conditions occurs:
    - b.length bytes of input data are available, in which case a normal return is made.
    - End of file is detected, in which case an EOFException is thrown.
    - An I/O error occurs, in which case an IOException other than EOFException is thrown.
    If b is null, a NullPointerException is thrown. If b.length is zero, then no bytes are read. Otherwise, the first byte read is stored into element b[0], the next one into b[1], and so on. If an exception is thrown from this method, then it may be that some but not all bytes of b have been updated with data from the input stream.
    Specified by:
    
    readFully in interface java.io.DataInput
    
    Parameters:
    
    b - the buffer into which the data is read.
    
    Throws:
    
    java.io.EOFException - if this stream reaches the end before reading all the bytes.
    
    java.io.IOException - if an I/O error occurs.
  - readFully
```
public void readFully(byte[] b,
                      int off,
                      int len)
               throws java.io.IOException
```
    Reads len bytes from an input stream.
    This method blocks until one of the following conditions occurs:
    - len bytes of input data are available, in which case a normal return is made.
    - End of file is detected, in which case an EOFException is thrown.
    - An I/O error occurs, in which case an IOException other than EOFException is thrown.
    If b is null, a NullPointerException is thrown. If off is negative, or len is negative, or off+len is greater than the length of the array b, then an IndexOutOfBoundsException is thrown. If len is zero, then no bytes are read. Otherwise, the first byte read is stored into element b[off], the next one into b[off+1], and so on. The number of bytes read is, at most, equal to len.
    Specified by:
    
    readFully in interface java.io.DataInput
    
    Parameters:
    
    b - the buffer into which the data is read.
    
    off - an int specifying the offset into the data.
    
    len - an int specifying the number of bytes to read.
    
    Throws:
    
    java.io.EOFException - if this stream reaches the end before reading all the bytes.
    
    java.io.IOException - if an I/O error occurs.
  - skipBytes
```
public int skipBytes(int n)
              throws java.io.IOException
```
    Makes an attempt to skip over n bytes of data from the input stream, discarding the skipped bytes. However, it may skip over some smaller number of bytes, possibly zero. This may result from any of a number of conditions; reaching end of file before n bytes have been skipped is only one possibility. This method never throws an EOFException. The actual number of bytes skipped is returned.
    
    Specified by:
    
    skipBytes in interface java.io.DataInput
    
    Parameters:
    
    n - the number of bytes to be skipped.
    
    Returns:
    
    the number of bytes skipped, which is always n.
    
    Throws:
    
    java.io.EOFException - if this stream reaches the end before skipping all the bytes.
    
    java.io.IOException - if an I/O error occurs.
  - readBoolean
```
public boolean readBoolean()
                    throws java.io.IOException
```
    Reads one input byte and returns true if that byte is nonzero, false if that byte is zero. This method is suitable for reading the byte written by the writeBoolean method of interface DataOutput.
    
    Specified by:
    
    readBoolean in interface java.io.DataInput
    
    Returns:
    
    the boolean value read.
    
    Throws:
    
    java.io.EOFException - if this stream reaches the end before reading all the bytes.
    
    java.io.IOException - if an I/O error occurs.
  - readByte
```
public byte readByte()
              throws java.io.IOException
```
    Reads and returns one input byte. The byte is treated as a signed value in the range -128 through 127, inclusive. This method is suitable for reading the byte written by the writeByte method of interface DataOutput.
    
    Specified by:
    
    readByte in interface java.io.DataInput
    
    Returns:
    
    the 8-bit value read.
    
    Throws:
    
    java.io.EOFException - if this stream reaches the end before reading all the bytes.
    
    java.io.IOException - if an I/O error occurs.
  - readUnsignedByte
```
public int readUnsignedByte()
                     throws java.io.IOException
```
    Reads one input byte, zero-extends it to type int, and returns the result, which is therefore in the range 0 through 255. This method is suitable for reading the byte written by the writeByte method of interface DataOutput if the argument to writeByte was intended to be a value in the range 0 through 255.
    
    Specified by:
    
    readUnsignedByte in interface java.io.DataInput
    
    Returns:
    
    the unsigned 8-bit value read.
    
    Throws:
    
    java.io.EOFException - if this stream reaches the end before reading all the bytes.
    
    java.io.IOException - if an I/O error occurs.
  - readShort
```
public short readShort()
                throws java.io.IOException
```
    Reads a 16 bit short.
    
    Specified by:
    
    readShort in interface java.io.DataInput
    
    Returns:
    
    the 16 bit short read.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readUnsignedShort
```
public int readUnsignedShort()
                      throws java.io.IOException
```
    Reads an unsigned 16 bit short.
    
    Specified by:
    
    readUnsignedShort in interface java.io.DataInput
    
    Returns:
    
    the 16 bit short read.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readChar
```
public char readChar()
              throws java.io.IOException
```
    Reads a 16 bit char.
    
    Specified by:
    
    readChar in interface java.io.DataInput
    
    Returns:
    
    the 16 bit char read.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readInt
```
public int readInt()
            throws java.io.IOException
```
    Reads a 32 bit int.
    
    Specified by:
    
    readInt in interface java.io.DataInput
    
    Returns:
    
    the 32 bit integer read.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readLong
```
public long readLong()
              throws java.io.IOException
```
    Reads a 64 bit long.
    
    Specified by:
    
    readLong in interface java.io.DataInput
    
    Returns:
    
    the read 64 bit long.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readFloat
```
public float readFloat()
                throws java.io.IOException
```
    Reads a 32 bit float.
    
    Specified by:
    
    readFloat in interface java.io.DataInput
    
    Returns:
    
    the 32 bit float read.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readDouble
```
public double readDouble()
                  throws java.io.IOException
```
    Reads a 64 bit double.
    
    Specified by:
    
    readDouble in interface java.io.DataInput
    
    Returns:
    
    the 64 bit double read.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readLine
```
public java.lang.String readLine()
                          throws java.io.IOException
```
    Read a line of text. A line is considered to be terminated by any one of a line feed ('\n'), a carriage return ('\r'), or a carriage return followed immediately by a linefeed.
    
    Specified by:
    
    readLine in interface java.io.DataInput
    
    Returns:
    
    A String containing the contents of the line, not including any line-termination characters, or null if the end of the stream has been reached
    
    Throws:
    
    java.io.IOException - If an I/O error occurs
  - readUTF
```
public java.lang.String readUTF()
                         throws java.io.IOException
```
    Reads in a string that has been encoded using a modified UTF-8 format. The general contract of readUTF is that it reads a representation of a Unicode character string encoded in Java modified UTF-8 format; this string of characters is then returned as a String.
    First, two bytes are read and used to construct an unsigned 16-bit integer in exactly the manner of the readUnsignedShort method . This integer value is called the UTF length and specifies the number of additional bytes to be read. These bytes are then converted to characters by considering them in groups. The length of each group is computed from the value of the first byte of the group. The byte following a group, if any, is the first byte of the next group.
    If the first byte of a group matches the bit pattern 0xxxxxxx (where x means "may be 0 or 1"), then the group consists of just that byte. The byte is zero-extended to form a character.
    If the first byte of a group matches the bit pattern 110xxxxx, then the group consists of that byte a and a second byte b. If there is no byte b (because byte a was the last of the bytes to be read), or if byte b does not match the bit pattern 10xxxxxx, then a UTFDataFormatException is thrown. Otherwise, the group is converted to the character:
```
(char)(((a& 0x1F) << 6) | (b & 0x3F))
 
```
    If the first byte of a group matches the bit pattern 1110xxxx, then the group consists of that byte a and two more bytes b and c. If there is no byte c (because byte a was one of the last two of the bytes to be read), or either byte b or byte c does not match the bit pattern 10xxxxxx, then a UTFDataFormatException is thrown. Otherwise, the group is converted to the character:
```
 (char)(((a & 0x0F) << 12) | ((b & 0x3F) << 6) | (c & 0x3F))
 
```
    If the first byte of a group matches the pattern 1111xxxx or the pattern 10xxxxxx, then a UTFDataFormatException is thrown.
    If end of file is encountered at any time during this entire process, then an EOFException is thrown.
    After every group has been converted to a character by this process, the characters are gathered, in the same order in which their corresponding groups were read from the input stream, to form a String, which is returned.
    The writeUTF method of interface DataOutput may be used to write data that is suitable for reading by this method.
    Specified by:
    
    readUTF in interface java.io.DataInput
    
    Returns:
    
    a Unicode string.
    
    Throws:
    
    java.io.EOFException - if this stream reaches the end before reading all the bytes.
    
    java.io.IOException - if an I/O error occurs.
    
    java.io.UTFDataFormatException - if the bytes do not represent a valid UTF-8 encoding of a string.
  - readUTF
```
public static final java.lang.String readUTF(java.io.DataInput in)
                                      throws java.io.IOException
```
    Reads from the stream in a representation of a Unicode character string encoded in Java modified UTF-8 format; this string of characters is then returned as a String. The details of the modified UTF-8 representation are exactly the same as for the readUTF method of DataInput.
    
    Parameters:
    
    in - a data input stream.
    
    Returns:
    
    a Unicode string.
    
    Throws:
    
    java.io.EOFException - if the input stream reaches the end before all the bytes.
    
    java.io.IOException - if an I/O error occurs.
    
    java.io.UTFDataFormatException - if the bytes do not represent a valid UTF-8 encoding of a Unicode string.
    
    See Also:
    
    DataInputStream.readUnsignedShort()
  - readByteArray
```
public byte[] readByteArray(int length)
                     throws java.io.IOException
```
    Reads an array of bytes.
    
    Parameters:
    
    length - array length
    
    Returns:
    
    the array.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readUnsignedByteArray
```
public int[] readUnsignedByteArray(int length)
                            throws java.io.IOException
```
    Reads an array of unsigned bytes.
    
    Parameters:
    
    length - array length
    
    Returns:
    
    the array.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readShortArray
```
public short[] readShortArray(int length)
                       throws java.io.IOException
```
    Reads an array of shorts.
    
    Parameters:
    
    length - array length
    
    Returns:
    
    the array.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readUnsignedShortArray
```
public int[] readUnsignedShortArray(int length)
                             throws java.io.IOException
```
    Reads an array of unsigned shorts.
    
    Parameters:
    
    length - array length
    
    Returns:
    
    the array.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readCharArray
```
public char[] readCharArray(int length)
                     throws java.io.IOException
```
    Reads an array of chars.
    
    Parameters:
    
    length - array length
    
    Returns:
    
    the array.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readIntArray
```
public int[] readIntArray(int length)
                   throws java.io.IOException
```
    Reads an array of ints.
    
    Parameters:
    
    length - array length
    
    Returns:
    
    the array.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readLongArray
```
public long[] readLongArray(int length)
                     throws java.io.IOException
```
    Reads an array of longs.
    
    Parameters:
    
    length - array length
    
    Returns:
    
    the array.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readFloatArray
```
public float[] readFloatArray(int length)
                       throws java.io.IOException
```
    Reads an array of floats.
    
    Parameters:
    
    length - array length
    
    Returns:
    
    the array.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.
  - readDoubleArray
```
public double[] readDoubleArray(int length)
                         throws java.io.IOException
```
    Reads an array of doubles.
    
    Parameters:
    
    length - array length
    
    Returns:
    
    the array.
    
    Throws:
    
    java.io.EOFException - If end of file is reached.
    
    java.io.IOException - If other I/O error has occurred.

Class IstiDataInputStream

Field Summary

Fields inherited from class java.io.FilterInputStream

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

IstiDataInputStream

IstiDataInputStream

Method Detail

isBigEndian

isLittleEndian

setBigEndian

setLittleEndian

read

read

read

skip

available

close

mark

reset

markSupported

readFully

readFully

skipBytes

readBoolean

readByte

readUnsignedByte

readShort

readUnsignedShort

readChar

readInt

readLong

readFloat

readDouble

readLine

readUTF

readUTF

readByteArray

readUnsignedByteArray

readShortArray

readUnsignedShortArray

readCharArray

readIntArray

readLongArray

readFloatArray

readDoubleArray