File (Java FIX Engine Package 2.15.0 API)

java.lang.Object
- biz.onixs.util.File

```
public class File
extends Object
```
A lightweight wrapper around RandomAccessFile that provides convenience methods for reading, writing, and navigating file content using intuitive helper operations.

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`SEEK_CUR` Origin constant used to move relative to the current file pointer.
`static int`	`SEEK_END` Origin constant used to move relative to the end of file.
`static int`	`SEEK_SET` Origin constant used to move relative to the beginning of file.

Constructor Summary

Constructors
Constructor and Description

File()
Constructor.

File(String filePath, String mode)
Constructor.

Constructors
Constructor and Description
`File()` Constructor.
`File(String filePath, String mode)` Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`close()` Closes the underlying random access file if it is open.
`boolean`	`endOfFile()` Indicates whether the file pointer currently resides at end of file.
`void`	`flush(boolean metadata)` Flushes file data to stable storage.
`int`	`getc()` Reads the next byte from the file.
`FileChannel`	`getFileChannel()` Provides direct access to the file channel backing this file wrapper.
`String`	`getLine(int separator)` Reads a line terminated by the provided separator.
`String`	`getLine(int separator, int separator2)` Reads a line terminated by either of the provided separators.
`void`	`getLine(StringBuilder stringBuilder, int separator)` Reads characters into the provided builder until the separator or EOF is reached.
`void`	`getLine(StringBuilder stringBuilder, int separator, int separator2)` Reads characters into the provided builder until one of the separators or EOF is reached.
`byte[]`	`gets(byte[] string, int offset, int maxCount)` Reads up to `maxCount` bytes into the supplied array.
`String`	`gets(int maxLength)` Reads up to `maxLength` bytes and returns them as a string.
`void`	`ignore(int nSymbols)` Skips reading up to `nSymbols` bytes, stopping at EOF.
`void`	`ignore(int nSymbols, int delimiter)` Skips reading up to `nSymbols` bytes or until the delimiter is encountered.
`long`	`length()` Retrieves the current length of the underlying file.
`boolean`	`open(String filePath, String mode)` Opens the file at the specified path.
`String`	`path()` Returns the path used to open this file.
`int`	`read(byte[] buffer, int bufferLength)` Reads up to `bufferLength` bytes into the provided array.
`void`	`seek(long offset)` Moves the file pointer to an absolute offset.
`void`	`seek(long offset, int origin)` Moves the file pointer relative to the specified origin.
`long`	`tell()` Reports the current file pointer location.
`String`	`toString()` Returns a human-readable representation of the file wrapper.
`void`	`write(byte value)` Writes a single byte value to the file.
`void`	`write(byte[] buf)` Writes the provided buffer to the file.
`void`	`write(byte[] buf, int offset, int length)` Writes a slice of the provided buffer to the file.
`void`	`write(ByteBuffer value)` Writes the contents of the provided `ByteBuffer`.
`void`	`write(String value)` Writes the given string using the platform's default byte encoding.

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

- Field Detail
  - SEEK_CUR
```
public static final int SEEK_CUR
```
    Origin constant used to move relative to the current file pointer.
    
    See Also:
    
    Constant Field Values
  - SEEK_END
```
public static final int SEEK_END
```
    Origin constant used to move relative to the end of file.
    
    See Also:
    
    Constant Field Values
  - SEEK_SET
```
public static final int SEEK_SET
```
    Origin constant used to move relative to the beginning of file.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - File
```
public File()
```
    Constructor.
  - File
```
public File(String filePath,
            String mode)
     throws FileNotFoundException
```
    Constructor.
    
    Parameters:
    
    filePath - a pathname string
    
    mode - the access mode
    
    Throws:
    
    FileNotFoundException - in case of file not found
- Method Detail
  - close
```
public void close()
           throws IOException
```
    Closes the underlying random access file if it is open.
    
    Throws:
    
    IOException - if an I/O error occurs while closing the file
  - getFileChannel
```
public FileChannel getFileChannel()
```
    Provides direct access to the file channel backing this file wrapper.
    
    Returns:
    
    the FileChannel associated with the underlying file
  - length
```
public long length()
            throws IOException
```
    Retrieves the current length of the underlying file.
    
    Returns:
    
    the file length in bytes
    
    Throws:
    
    IOException - if the length cannot be read
  - endOfFile
```
public boolean endOfFile()
```
    Indicates whether the file pointer currently resides at end of file.
    
    Returns:
    
    true when the pointer is at EOF or an error occurs; false otherwise
  - path
```
public String path()
```
    Returns the path used to open this file.
    
    Returns:
    
    the file path, or null if the file has not been opened
  - getc
```
public int getc()
```
    Reads the next byte from the file.
    
    Returns:
    
    the unsigned byte value in the range 0-255, or EOF on failure or end of file
  - getLine
```
public void getLine(StringBuilder stringBuilder,
                    int separator)
             throws IOException
```
    Reads characters into the provided builder until the separator or EOF is reached.
    
    Parameters:
    
    stringBuilder - the destination for the characters that are read
    
    separator - the byte value that stops the read
    
    Throws:
    
    IOException - if the read fails
  - getLine
```
public String getLine(int separator)
               throws IOException
```
    Reads a line terminated by the provided separator.
    
    Parameters:
    
    separator - the byte value that terminates the line
    
    Returns:
    
    the collected characters (without the separator)
    
    Throws:
    
    IOException - if an I/O error occurs
  - getLine
```
public void getLine(StringBuilder stringBuilder,
                    int separator,
                    int separator2)
             throws IOException
```
    Reads characters into the provided builder until one of the separators or EOF is reached.
    
    Parameters:
    
    stringBuilder - the destination for characters
    
    separator - the primary terminating character
    
    separator2 - an alternative terminating character
    
    Throws:
    
    IOException - if reading fails
  - getLine
```
public String getLine(int separator,
                      int separator2)
               throws IOException
```
    Reads a line terminated by either of the provided separators.
    
    Parameters:
    
    separator - the primary terminating character
    
    separator2 - an alternative terminating character
    
    Returns:
    
    the collected characters without the separator byte
    
    Throws:
    
    IOException - if an I/O error occurs
  - gets
```
public byte[] gets(byte[] string,
                   int offset,
                   int maxCount)
```
    Reads up to maxCount bytes into the supplied array.
    
    Parameters:
    
    string - the destination buffer
    
    offset - the starting offset in the destination buffer
    
    maxCount - the maximum number of bytes to read
    
    Returns:
    
    the destination buffer, or null when EOF is reached or an error occurs
  - gets
```
public String gets(int maxLength)
```
    Reads up to maxLength bytes and returns them as a string.
    
    Parameters:
    
    maxLength - the maximum number of bytes to read
    
    Returns:
    
    a string containing the bytes read, or null when EOF is reached or an error occurs
  - ignore
```
public void ignore(int nSymbols,
                   int delimiter)
```
    Skips reading up to nSymbols bytes or until the delimiter is encountered.
    
    Parameters:
    
    nSymbols - the maximum number of bytes to skip
    
    delimiter - the terminating byte value; skipping stops when this is read
  - ignore
```
public void ignore(int nSymbols)
```
    Skips reading up to nSymbols bytes, stopping at EOF.
    
    Parameters:
    
    nSymbols - the maximum number of bytes to skip
  - flush
```
public void flush(boolean metadata)
           throws IOException
```
    Flushes file data to stable storage.
    When metadata is true, both file data and metadata (e.g., file size) are forced to disk. When false, only file data is flushed.
    
    Parameters:
    
    metadata - whether file metadata should also be flushed
    
    Throws:
    
    IOException - if the flush operation fails
  - open
```
public boolean open(String filePath,
                    String mode)
```
    Opens the file at the specified path.
    
    Parameters:
    
    filePath - the target file path
    
    mode - the access mode used by RandomAccessFile
    
    Returns:
    
    true when the file is opened successfully; false otherwise
  - read
```
public int read(byte[] buffer,
                int bufferLength)
         throws IOException
```
    Reads up to bufferLength bytes into the provided array.
    
    Parameters:
    
    buffer - the destination buffer
    
    bufferLength - the maximum number of bytes to read
    
    Returns:
    
    the number of bytes read, or -1 at EOF
    
    Throws:
    
    IOException - if the read fails
  - seek
```
public void seek(long offset)
          throws IOException
```
    Moves the file pointer to an absolute offset.
    
    Parameters:
    
    offset - the absolute position to move to
    
    Throws:
    
    IOException - if the seek fails
  - seek
```
public void seek(long offset,
                 int origin)
          throws IOException
```
    Moves the file pointer relative to the specified origin.
    
    Parameters:
    
    offset - the number of bytes to move
    
    origin - one of SEEK_SET, SEEK_CUR, or SEEK_END
    
    Throws:
    
    IOException - if the seek fails
  - tell
```
public long tell()
          throws IOException
```
    Reports the current file pointer location.
    
    Returns:
    
    the zero-based offset of the file pointer
    
    Throws:
    
    IOException - if the position cannot be obtained
  - write
```
public void write(byte value)
           throws IOException
```
    Writes a single byte value to the file.
    
    Parameters:
    
    value - the byte to write
    
    Throws:
    
    IOException - if the write fails
  - write
```
public void write(byte[] buf)
           throws IOException
```
    Writes the provided buffer to the file.
    
    Parameters:
    
    buf - the bytes to write
    
    Throws:
    
    IOException - if the write fails
  - write
```
public void write(ByteBuffer value)
           throws IOException
```
    Writes the contents of the provided ByteBuffer.
    
    Parameters:
    
    value - the buffer containing data to write
    
    Throws:
    
    IOException - if the write fails
  - write
```
public void write(String value)
           throws IOException
```
    Writes the given string using the platform's default byte encoding.
    
    Parameters:
    
    value - the string to write
    
    Throws:
    
    IOException - if the write fails
  - write
```
public void write(byte[] buf,
                  int offset,
                  int length)
           throws IOException
```
    Writes a slice of the provided buffer to the file.
    
    Parameters:
    
    buf - the source buffer
    
    offset - the starting index in the buffer
    
    length - the number of bytes to write
    
    Throws:
    
    IOException - if the write fails
  - toString
```
public String toString()
```
    Returns a human-readable representation of the file wrapper.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    a string including the path and closed state

Class File

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

SEEK_CUR

SEEK_END

SEEK_SET

Constructor Detail

File

File

Method Detail

close

getFileChannel

length

endOfFile

path

getc

getLine

getLine

getLine

getLine

gets

gets

ignore

ignore

flush

open

read

seek

seek

tell

write

write

write

write

write

toString