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CopyFileTest.java

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//copyfile

import java.io.*;

import java.nio.file.*;

import java.nio.channels.*;

public class CopyFileTest

{

public static void main(String[] args)

{

new CopyFileTest();

}

public CopyFileTest()

{

File source=new File("lab_db2.accdb");

File destination=new File("backups/lab_db2_backup.accdb");

try{copyFile(source,destination);}catch(Exception e){System.out.println(e);}

}

public static void copyFile(File sourceFile, File destFile) throws IOException

{

int counter = 0;

if(destFile.exists()) {

while(destFile.exists())

{

destFile = new File("backups/lab_db_backup"+counter+".accdb");

counter++;

}

}

else if(!destFile.exists()) {

destFile.createNewFile();

}

FileChannel source = null;

FileChannel destination = null;

try {

source = new RandomAccessFile(sourceFile,"rw").getChannel();

destination = new RandomAccessFile(destFile,"rw").getChannel();

long position = 0;

long count = source.size();

source.transferTo(position, count, destination);

}

finally {

if(source != null) {

source.close();

}

if(destination != null) {

destination.close();

}

}

}

}