MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.io.FileOutputStream;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.net.URL;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.nio.channels.SocketChannel;

public class MainClass {

    public static void main(String[] args) throws IOException {

        URL u = new URL("http://www.java2s.com");
        String host = u.getHost();
        int port = 80;
        String file = "/";

        SocketAddress remote = new InetSocketAddress(host, port);
        SocketChannel channel = SocketChannel.open(remote);
        FileOutputStream out = new FileOutputStream("yourfile.htm");
        FileChannel localFile = out.getChannel();

        String request = "GET " + file + " HTTP/1.1\r\n" + "User-Agent: HTTPGrab\r\n" + "Accept: text/*\r\n"
                + "Connection: close\r\n" + "Host: " + host + "\r\n" + "\r\n";

        ByteBuffer header = ByteBuffer.wrap(request.getBytes("US-ASCII"));
        channel.write(header);

        ByteBuffer buffer = ByteBuffer.allocate(8192);
        while (channel.read(buffer) != -1) {
            buffer.flip();
            localFile.write(buffer);
            buffer.clear();
        }

        localFile.close();
        channel.close();
    }
}