package elte.java2_utikalauz5.io;

import java.io.*;
import java.nio.*;
import java.nio.channels.*;

/**
Másolás csatornákkal.

@link.forrásfájl {@docRoot}/../data/io/src Masolo2.java
@link.letöltés {@docRoot}/../data/io Masolo2.jar
@since Java 2 Útikalauz programozóknak 5.0
*/
class Masolo2 {
    public static void másol( ReadableByteChannel in, WritableByteChannel out )
           throws IOException {
       ByteBuffer buffer = ByteBuffer.allocate(1024);
       while (in.read( (ByteBuffer)buffer.clear() ) != -1)
          out.write( (ByteBuffer)buffer.flip() );
    }

    public static void main( String[] args ) throws IOException {
       FileInputStream fin = new FileInputStream(args[0]);
       try {
           FileChannel in = fin.getChannel();
           FileOutputStream fout = new FileOutputStream(args[1]);
           try {
               FileChannel out = fout.getChannel();
               másol(in,out);
          } finally { fout.close(); }
       } finally { fin.close(); }
    }
}