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Java program for create backup file


FileBackupCreate.java

import java.io.*;
class FileBackupCreate
{
public static void main(String[] args) throws FileNotFoundException, IOException
{
FileInputStream fis = null;
FileOutputStream fos = null;
int fileSize = 0, data = 0;
fis = new FileInputStream(args[0]);
fileSize = fis.available();
if (fileSize == 0)
{
System.out.println("Sorry, this file is empty.");
fis.close();
return;
}
fos = new FileOutputStream(args[0] + ".bak");
while ( (data = fis.read()) != -1)
{
fos.write(data);
}
fos.flush();
System.out.println("Backup file craeted successfully.");
fos.close();
fis.close();
}
}