listing15-07_resourcereader.java_ok

着几乎所有智能机厂商都将有自己配套的App Store,甚至并非智能手机制造商的三星也有意加入本次混战. 当然,我们也不能忘记苹果最先从iTunes中得到的灵感,从而带来了应用程序商店,一个正确

// 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();
	}
}