Resource to byte Array

rsctobyte.java

try {
    InputStream is = this.getClass().getResourceAsStream(
            "/classpath/dummy.png");

    ByteArrayOutputStream buffer = new ByteArrayOutputStream();

    int nRead;
    byte[] data = new byte[16384];

    while ((nRead = is.read(data, 0, data.length)) != -1) {
        buffer.write(data, 0, nRead);
    }
    buffer.flush();
    
    //
    //now use buffer.toByteArray();
    //
} catch (IOException ex) {
    //TODO handle IOException
}