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The URL class provides a
method:
public InputStream openStream()
Remember, however, that if you wish to read text from this
stream, you must wrap it inside an InputStreamReader,
as we discussed in the I/O section.
Here's an application that makes use of this method to
read text from a specified URL:
package networking;
import java.net.URL;
import java.io.BufferedReader;
import java.io.InputStreamReader;
/**
* Application to read text from a URL
* specified in the first command line argument.
* (Note that this is NOT a Reader, like BufferedReader.)
*/
public class URLReader
{
public static void main(String[] args) throws Exception
{
if (args.length < 1)
{
System.err.println("Usage: java URLRreader <URL-to-read>");
}
else
{
// Construct a URL from the first argument passed in
URL url = new URL(args[0]);
BufferedReader reader = new BufferedReader(
new InputStreamReader(
url.openStream() ) );
try
{
String line = null;
while (true)
{
line = reader.readLine();
if (line == null)
break;
System.out.println(line);
}
}
finally
{
reader.close();
}
}
}
}
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For example, if you pass the URL:
http://www.yahoo.com/
to this application, it will print out something like:
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