Java by API/java.net/URL

new URL(String spec) throws MalformedURLException

  
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
public class Main {
  public static void main(String[] argv) throws Exception {
    
    URLConnection conn = new URL("http://www.yourserver.ru").openConnection();
    conn.setDoInput(true);
    conn.setRequestProperty("Authorization", "asdfasdf");
    conn.connect();
    InputStream in = conn.getInputStream();
  }
}

URL: getAuthority()

 
/*
URL is http://www.jexp.ru
authority is www.jexp.ru
path is 
default port is 80
query is null
ref is null
 
 */
import java.io.IOException;
import java.net.URL;
public class MainClass {
  public static void main(String[] args) {
    try {
      URL url = new URL("http://www.jexp.ru");
      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 port is " + url.getDefaultPort());
      System.out.println("query is " + url.getQuery());
      System.out.println("ref is " + url.getRef());
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}

URL: getDefaultPort()

 
/*
URL is http://www.jexp.ru
authority is www.jexp.ru
path is 
default port is 80
query is null
ref is null
 
 */
import java.io.IOException;
import java.net.URL;
public class MainClass {
  public static void main(String[] args) {
    try {
      URL url = new URL("http://www.jexp.ru");
      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 port is " + url.getDefaultPort());
      System.out.println("query is " + url.getQuery());
      System.out.println("ref is " + url.getRef());
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}

URL.getPath()

 
/*
URL is http://www.jexp.ru
authority is www.jexp.ru
path is 
default port is 80
query is null
ref is null
 
 */
import java.io.IOException;
import java.net.URL;
public class MainClass {
  public static void main(String[] args) {
    try {
      URL url = new URL("http://www.jexp.ru");
      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 port is " + url.getDefaultPort());
      System.out.println("query is " + url.getQuery());
      System.out.println("ref is " + url.getRef());
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}

URL: getQuery()

 
/*
URL is http://www.jexp.ru
authority is www.jexp.ru
path is 
default port is 80
query is null
ref is null
 
 */
import java.io.IOException;
import java.net.URL;
public class MainClass {
  public static void main(String[] args) {
    try {
      URL url = new URL("http://www.jexp.ru");
      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 port is " + url.getDefaultPort());
      System.out.println("query is " + url.getQuery());
      System.out.println("ref is " + url.getRef());
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}

URL: getRef()

 
/*
URL is http://www.jexp.ru
authority is www.jexp.ru
path is 
default port is 80
query is null
ref is null
 
 */
import java.io.IOException;
import java.net.URL;
public class MainClass {
  public static void main(String[] args) {
    try {
      URL url = new URL("http://www.jexp.ru");
      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 port is " + url.getDefaultPort());
      System.out.println("query is " + url.getQuery());
      System.out.println("ref is " + url.getRef());
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}

URL: openConnection()

  
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 Main {
  public static void main(String[] args) throws Exception {
    Date today = new Date();
    long millisecondsPerDay = 24 * 60 * 60 * 1000;
    URL u = new URL("http://www.jexp.ru");
    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.print((char) c);
    }
  }
}

URL: openStream()

 
/*
 * Output:
 *  
 */
import java.io.InputStream;
import java.net.URL;
public class MainClass {
  public static void main(String args[]) {
    try {
      URL url = new URL("http://www.jexp.ru");
      // Obtain output stream
      InputStream is = url.openStream();
      // Read and display data from url
      byte buffer[] = new byte[1024];
      int i;
      while ((i = is.read(buffer)) != -1) {
        System.out.write(buffer, 0, i);
      }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}