import java.io.*;
import java.util.*;
public class CopyTest
{
public static void main (String[] args) throws IOException
{
CopyTest ct = new CopyTest (new BufferedByteStreamMethod(), new ByteStreamMethod());
File f = ct.writeTestFile (new File ("C:\\"), 1000000);
File f2 = new File (f.getAbsolutePath() + "2");
try{
Thread.sleep (500);
}catch (InterruptedException e){}
ct.test (f, f2);
}
private CopyMethod cma;
private CopyMethod cmb;
public CopyTest (CopyMethod meth1, CopyMethod meth2)
{
cma = meth1;
cmb = meth2;
}
public void test (File start, File ziel)
{
if (!start.exists()){
throw new IllegalArgumentException ("Startfile doesn't exist! " + start, new FileNotFoundException());
}
if (ziel.exists()){
ziel.delete();
}
long before = System.currentTimeMillis();
try{
cma.copy (start, ziel);
}catch (Exception e){
System.out.println("Exception testing class: " + cma.getClass().getName());
e.printStackTrace();
return;
}
long after = System.currentTimeMillis();
long cmal = after - before;
System.out.println(cma.getClass().getName() + " needed " + cmal + " milliseconds.");
try{
Thread.sleep (500);
}catch (InterruptedException e){}
before = System.currentTimeMillis();
try{
cmb.copy (start, ziel);
}catch (Exception e){
System.out.println("Exception testing class: " + cmb.getClass().getName());
e.printStackTrace();
return;
}
after = System.currentTimeMillis();
long cmbl = after - before;
System.out.println(cmb.getClass().getName() + " needed " + cmbl + " milliseconds.");
System.out.println("Difference: " + Math.abs (cmal - cmbl));
}
public File writeTestFile (File parentDirectory, long size_kb) throws IOException
{
if (!parentDirectory.isDirectory()){
throw new IllegalArgumentException ("Not a directory: " + parentDirectory);
}
File fil = new File (parentDirectory, "testfile.tst");
if (fil.exists()){
fil.delete();
}
byte[] buf = new byte[1024];
Arrays.fill (buf, (byte)1);
OutputStream os = new FileOutputStream (fil);
byte lastPercent = -1;
System.out.print("Write testfile: ___________\b\b\b\b\b\b\b\b\b\b\b"); //(Edit:verändert)
for (long l = 0; l < size_kb; l++){
os.write (buf);
byte percent = (byte)((l * 1.0) / size_kb * 10);
if (percent > lastPercent){
lastPercent = percent;
System.out.print("|");
}
}
System.out.println("|"); //(Edit:verändert)
os.close();
return fil;
}
}
abstract class CopyMethod
{
abstract public void copy (File start, File ziel) throws IOException;
}
class ByteStreamMethod extends CopyMethod
{
public void copy (File start, File ziel)
throws IOException
{
InputStream in = new FileInputStream(start);
OutputStream out = new FileOutputStream(ziel);
byte[] buffer = new byte[1024];
for (int n;(n = in.read(buffer)) != -1;out.write(buffer, 0, n));
in.close();
out.close();
}
}
class BufferedByteStreamMethod extends CopyMethod
{
public void copy (File start, File ziel)
throws IOException
{
BufferedInputStream in = new BufferedInputStream(new FileInputStream(start));
BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(ziel));
int i;
while ((i = in.read()) != -1)
out.write(i);
in.close();
out.close();
}
}
