import java.io.*;
public class IOTest {
public static void main(String[] args){
IOTest io = new IOTest();
try{
long startTime = System.currentTimeMillis();
io.readWrite("c:/temp/test1.txt","c:/temp/test4.txt");
long endTime = System.currentTimeMillis();
System.out.println("Time taken for reading and writing using default behaviour : "
+ (endTime - startTime) + " milli seconds" );
long startTime1 = System.currentTimeMillis();
io.readWriteBuffer("c:/temp/test2.txt","c:/temp/test5.txt");
long endTime1 = System.currentTimeMillis();
System.out.println("Time taken for reading and writing using buffered streams : "
+ (endTime1 - startTime1) + " milli seconds" );
long startTime2 = System.currentTimeMillis();
io.readWriteArray("c:/temp/test3.txt","c:/temp/test6.txt");
long endTime2 = System.currentTimeMillis();
System.out.println("Time taken for reading and writing using custom buffering : "
+ (endTime2 - startTime2) + " milli seconds" );
}catch(IOException e){ e.printStackTrace();}
}
public static void readWrite(String fileFrom, String fileTo) throws IOException{
InputStream in = null;
OutputStream out = null;
try{
in = new FileInputStream(fileFrom);
out = new FileOutputStream(fileTo);
while(true){
int bytedata = in.read();
if(bytedata == -1)
break;
out.write(bytedata);
}
}
finally{
if(in != null)
in.close();
if(out !=null)
out.close();
}
}
public static void readWriteBuffer(String fileFrom, String fileTo) throws IOException{
InputStream inBuffer = null;
OutputStream outBuffer = null;
try{
InputStream in = new FileInputStream(fileFrom);
inBuffer = new BufferedInputStream(in);
OutputStream out = new FileOutputStream(fileTo);
outBuffer = new BufferedOutputStream(out);
while(true){
int bytedata = inBuffer.read();
if(bytedata == -1)
break;
out.write(bytedata);
}
}
finally{
if(inBuffer != null)
inBuffer.close();
if(outBuffer !=null)
outBuffer.close();
}
}
public static void readWriteArray(String fileFrom, String fileTo) throws IOException{
InputStream in = null;
OutputStream out = null;
try{
in = new FileInputStream(fileFrom);
out = new FileOutputStream(fileTo);
int availableLength = in.available();
byte[] totalBytes = new byte[availableLength];
in.read(totalBytes);
out.write(totalBytes);
}
finally{
if(in != null)
in.close();
if(out !=null)
out.close();
}
}
}