Package de.das.encrypter.tools

Class BufferedByteArray

java.lang.Object

de.das.encrypter.tools.BufferedByteArray

public class BufferedByteArray
extends Object

This class provides the functionality of a buffered byte array. Instead of loading all data into memory, the data is managed in an external file and only loaded into memory in portions, so that array sizes of 100MB and larger can also be worked with without causing out-of-memory exceptions.

Constructor Summary

Constructors

Constructor	Description
BufferedByteArray(File f)
BufferedByteArray(File f, int bufferSize)

Method Summary

Modifier and Type	Method	Description
void	arrayCopy(int pos, byte[] target, int targetPos, int length)	Copies the given amount of bytes from this buffered byte array to the given target byte array starting at specified target position.
byte	getByteAt(int position)
long	size()

Methods inherited from class java.lang.Object

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

Constructor Details

BufferedByteArray

public BufferedByteArray(File f)
                  throws Exception

Throws:

Exception

BufferedByteArray

public BufferedByteArray(File f,
 int bufferSize)
                  throws Exception

Throws:

Exception

Method Details

getByteAt

public byte getByteAt(int position)
               throws Exception

Throws:

Exception

size

public long size()

arrayCopy

public void arrayCopy(int pos,
 byte[] target,
 int targetPos,
 int length)
               throws Exception

Copies the given amount of bytes from this buffered byte array to the given target byte array starting at specified target position.

Parameters:

pos - specifies the starting position of this buffered byte array.

target - specifies a byte array to copy the data to.

targetPos - specifies the start position in the target byte array.

length - specifies the amount of bytes to be copied.

Throws:

Exception - if the index is out of range for one of the byte arrays.