BufferedReader br = new BufferedReader(isr); 
 
String s;
String[] components;
 
while((s = br.readLine()) != null) {
	components = s.split(" ");
	if (components.length > 2) {
		if (components[0].startsWith("v")) {
			vertices.add(Float.parseFloat(components[1]));
			vertices.add(Float.parseFloat(components[2]));
			vertices.add(Float.parseFloat(components[3]));
		}
		if (components[0].startsWith("f")) {
			for (int i = 1; i <= 3; i++) {
				String[] faceVertices = components[i].split("/");
				for (int j = 0; j < 3; j++) {
					faces.add( (Byte)(byte)(Integer.parseInt(faceVertices[j]) - 1));
				}
			}
		}
	}
}