// Listing 15-7. Reading a Resource Correctly Using Some Defensive Techniques

public class ResourceReader {

	public byte[] readResource( String url )
	throws IOException
	{
		InputStream in = getClass().getResourceAsStream( url );
		byte[] buffer;

		// the following always returns 0 on Symbian and Motorola:
		int available = in.available();
		if ( available == 0 ) {
			available = 4 * 1024; // 4 kb
		}

		buffer = new byte[ available ];
		ByteArrayOutputStream out = new ByteArrayOutputStream( available );
		int read;

		try {
			while ( (read = in.read( buffer ) ) != -1 ) {
				out.write( buffer, 0, read );
			}
		} finally {
			in.close();
		}
		return out.toByteArray();
	}
}