web development helpdesk

You can tell the parseInt() method what base number system is used by the String that is being parsed.

String hex = "01001101";
int n = Integer.parseInt(hex, 2);

written by objects \\ tags: binary, conversion, convert, int, integer, parse

Often you need to read a file line by line. Alternatively sometimes you want to read text word by word (for example to count the occurrence of different words). The Scanner classes next() method can be used for this as shown in the following example.

		Scanner input = new Scanner(file);
		while(input.hasNext()) {
			String word = input.next();
		}

written by objects \\ tags: file, parse, Scanner, text, word

The URL class can be used to parse a URL and retrieve the components such as host name

String urlstring = "http://www.objects.com.au/services/sherpa.html"
URL url = new URL(urlstring};
String host = url.getHost();   // returns "www.objects.com.au"

written by objects \\ tags: host, parse, url