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Tip of the Day
Language: Java, Web
Expertise: Intermediate
Jul 25, 1998

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Fetch Contents of URL

The Java core API provides classes in the java.net package to handle basic networking functions. The URL class represents a pointer to a network resource, like the actual address. The URL-Connection class represents a network connection to that resource. The following code takes a URL as an argument and prints its contents one line at a time:
 
import java.io.*;
import java.net.*;
public final class FetchURL {
  public static final void 
   main(String[] args) {
    String address;
    URL url;
    URLConnection connection;
    BufferedReader input;
    address  = args[0];
    try {
      url = new URL(address);
      connection = url.openConnection();
      input = new BufferedReader(
      new InputStreamReader(
      connection.getInputStream()));
      while((address = 
      input.readLine()) != null)
      System.out.println(address);
    }
 catch(IOException e) {
      e.printStackTrace();
    }
  }
}
Daniel Savarese
 
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