URLContent.java

import java.net.URL;
import java.io.*;

/** 指定された URLのオブジェクトを得る URLContent */

public class URLContent {

  /** 最初に呼び出されるメソッド */

     public static void main( String argv[] ) {

          if( argv.length != 1 ) {

              System.err.println( "Usage: java URLContent urlname" );
              System.exit(0);
          }
          try {
                URL url = new URL( argv[0] );
                Object content = url.getContent();
                if( content instanceof BufferedInputStream ) {

                     BufferedReader br
                       = new BufferedReader( new InputStreamReader(
                                            (InputStream)content )  );
                     String line;
                     while( ( line = br.readLine() ) != null )
                         System.out.println( line );
                     br.close();
                }
          }
          catch( Exception e ){
                System.err.println( e.getMessage() );
                System.exit(-1);
          }
     }
}