BA

package URL;

import java.io.InputStream;
import java.net.URL;

public class openStream {
    public static void main(String args[]){
        try {
            URL url=new URL("http://www.google.com");
            InputStream is=url.openStream();
           
            byte buffer[]=new byte[1024];
            int i;
            while((i=is.read(buffer))!=-1){
                System.out.write(buffer,0,i);
            }
        } catch (Exception e) {
                e.printStackTrace();
        }
    }
}

package URL;

import java.io.BufferedInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;
import java.net.URLConnection;
import java.util.Date;

public class openConnection {
    public static void main(String[] args)throws Exception{
        Date today=new Date();
        long millisecondsPerDay=24*60*60*1000;
       
        URL u=new URL("http://www.google.com");
        URLConnection uc=u.openConnection();
        uc.setIfModifiedSince((new Date(today.getTime() - millisecondsPerDay)).getTime());
        InputStream in=new BufferedInputStream(uc.getInputStream());
        Reader r=new InputStreamReader(in);
        int c;
       
        while((c=r.read())!=-1){
            System.out.println((char)c);
        }
    }
}

package URL;

import java.net.URL;

public class getAuthority {
    public static void main(String[] args){
        try {
            URL url=new URL("http://www.google.com");
            System.out.println("URL is "+url.toString());
            System.out.println("authority is "+url.getAuthority());
            System.out.println("path is "+url.getPath());
            System.out.println("default post is "+url.getDefaultPort());
            System.out.println("query is "+url.getQuery());
            System.out.println("ref is "+url.getRef());
        } catch (Exception e) {
                e.printStackTrace();
        }
    }
}

package URL;

import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

public class newURL {
    public static void main(String[] argv) throws Exception{
        URLConnection conn=new URL("http://127.0.0.1").openConnection();
        conn.setDoInput(true);
        conn.setRequestProperty("Authorization", "asdfasdf");
        conn.connect();
       
        InputStream in=conn.getInputStream();
        System.out.println(conn);
        System.out.println(in);
    }
}

package InetAddress;

import java.net.InetAddress;

public class getLocalHost {
    public static void main(String[] args){
        try {
            InetAddress me=InetAddress.getLocalHost();
            String dottedQuad=me.getHostAddress();
            System.out.println("My address is "+dottedQuad);
        } catch (Exception e) {
                e.printStackTrace();
        }
    }
}

package InetAddress;

import java.net.InetAddress;
import java.net.UnknownHostException;

public class getHostName {
    public static void main(String[] args){
        try {
            InetAddress address=InetAddress.getLocalHost();
            System.out.println("My name is "+address.getHostName());
        } catch (UnknownHostException e) {
                System.out.println("I don't know the name");
        }
    }
}

package InetAddress;

import java.net.InetAddress;

public class getHostAddress {
    public static void main(String[] args){
        try {
            InetAddress me=InetAddress.getLocalHost();
            String dottedQuad=me.getHostAddress(); 
            System.out.println("My address is : "+dottedQuad);
        } catch (Exception e) {
                e.printStackTrace();
        }
    }   
}

package InetAddress;

import java.net.InetAddress;

public class getCanonicalHostName {
    public static void main(String[] argv)throws Exception{
        InetAddress addr=InetAddress.getByName("127.0.0.1");
        byte[] ipAddr=new byte[] {127,0,0,1};
        addr=InetAddress.getByAddress(ipAddr);
       
        String hostname=addr.getHostName();
        System.out.println(hostname);
       
        String canonicalhostname=addr.getCanonicalHostName();
        System.out.println(canonicalhostname);
    }
}

package InetAddress;

import java.net.InetAddress;

public class getByName {
    public static void main(String[] args){
        try {
            InetAddress ia=InetAddress.getByName("localhost");
            System.out.println(ia.getHostName());
        } catch (Exception e) {
                System.err.println(e);
        }
    }
}