util
Class DataFile

java.lang.Object
  util.DataFile

public class DataFile
extends java.lang.Object

DataFile provides Stream to read and write to the files.

Author:

shankar

Constructor Summary

DataFile(java.lang.String fileName, java.lang.String type)
Constructs DataFile object for given file name and mode of opening file like "r", "w" and throws null point exception in read mode

Method Summary

void	close() Closes the opened Files
int	readInt() readInt reads a int bit into memory
long	readLong() Reads a long value from the file
void	writeDouble(double bit) writeDouble writes a double bit to file or stream
void	writeInt(int bit) writeInt writes a int bit to file or stream
void	writeLong(long bit) writeLong writes a long bit to file or stream
void	writeString(java.lang.String str) writeString writes a String to file or stream

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DataFile

public DataFile(java.lang.String fileName,
                java.lang.String type)
         throws java.lang.NullPointerException,
                java.io.IOException

Constructs DataFile object for given file name and mode of opening file like "r", "w" and throws null point exception in read mode

Parameters:

fileName - holds file name of the stream

type -

Throws:

java.lang.NullPointerException

java.io.IOException - if file does not exist or unable to write to the stream

Method Detail

writeInt

public void writeInt(int bit)
              throws java.io.IOException

writeInt writes a int bit to file or stream

Parameters:

bit -

Throws:

java.io.IOException

writeLong

public void writeLong(long bit)
               throws java.io.IOException

writeLong writes a long bit to file or stream

Parameters:

bit -

Throws:

java.io.IOException

writeDouble

public void writeDouble(double bit)
                 throws java.io.IOException

writeDouble writes a double bit to file or stream

Parameters:

bit -

Throws:

java.io.IOException

writeString

public void writeString(java.lang.String str)
                 throws java.io.IOException

writeString writes a String to file or stream

Parameters:

str -

Throws:

java.io.IOException

readInt

public int readInt()
            throws java.io.IOException

readInt reads a int bit into memory

Returns:

bit of int type

Throws:

java.io.IOException - if unable to read from File

readLong

public long readLong()
              throws java.io.IOException

Reads a long value from the file

Returns:

bit long type

Throws:

java.io.IOException - if unable to access

close

public void close()
           throws java.io.IOException

Closes the opened Files

Throws:

java.io.IOException - if the file is not accessible.