EE-WBC Assignment 4

Program 1 (30pts.)

Complete the provided test program that reads the location of a Web site as a string and calls a function that splits it into protocol name, port number, server name, and file name that starts with /. The program checks if the given Web site location was provided as a command line argument. If so, it uses it (add code). If not, it asks the user to enter it (already provided). The program calls a function called UrlSplitter that returns a variable of type Locator. (Class Locator) is already provided.) Your main task is to implement that function.

The complete location has the format of protocol://server:port/file/name/with.folder, for example http://gdansk.bradley.edu:80/olekmali/index.html. However, not all parts of it are always present. If protocol:// is omited please assume "http", if :port is omited, please assume 80 for "http" and 21 for "ftp". (Ideally you could get default values for other protocls as well.) Assume the Web server name is always there. If there is no filename, assume "/". Please note that in case the filename is not provided they may or may not be "/" present after the server name.

Here are examples of inputs and outputs that may be used to test your program:


Input String protocol port server file
http://gdansk.bradley.edu:80/olemali/index.html http 80 gdansk.bradley.edu /olekmali/index.html

gdansk.bradley.edu/olekmali/index.html http 80 gdansk.bradley.edu /olekmali/index.html
gdansk.bradley.edu/olekmali/index.html http 80 gdansk.bradley.edu /olekmali/index.html
http://cegt201.bradley.edu/ http 80 cegt201.bradley.edu /
http://cegt201.bradley.edu http 80 cegt201.bradley.edu /
http://cegt201.bradley.edu:88 http 88 cegt201.bradley.edu /
cegt201.bradley.edu http 80 cegt201.bradley.edu /
ftp://cegt201.bradley.edu ftp 21 cegt201.bradley.edu /
e.t.c.

Input String	protocol	port	server	file
http://gdansk.bradley.edu:80/olemali/index.html	http	80	gdansk.bradley.edu	/olekmali/index.html
gdansk.bradley.edu/olekmali/index.html	http	80	gdansk.bradley.edu	/olekmali/index.html
gdansk.bradley.edu/olekmali/index.html	http	80	gdansk.bradley.edu	/olekmali/index.html
http://cegt201.bradley.edu/	http	80	cegt201.bradley.edu	/
http://cegt201.bradley.edu	http	80	cegt201.bradley.edu	/
http://cegt201.bradley.edu:88	http	88	cegt201.bradley.edu	/
cegt201.bradley.edu	http	80	cegt201.bradley.edu	/
ftp://cegt201.bradley.edu	ftp	21	cegt201.bradley.edu	/
e.t.c.

Please send the source code only for the complete program as a file attachment with proper name. Source code pasted into the body of an email will not be graded. The program must compile to get any credit

Hint: you may do elaborate but straightforward work with String class or look up and study another class in the extensive Java library, and complete the function almost in one line. (three letter name that starts with letter 'U'.)

Homework Submission

Attach all source code in files with proper names and extensions (*.html, *.java, *.pl, *.php, .htaccess e.t.c.). Do not ZIP files together or include compiled files (e.g. *.class). In case of dynamic Web pages (JavaScript or CGI) or Java applets also send the complete URL (including http://) that points to a page on your Web site that demonstrates your homework. Send your homework via e- mail to the instructor at olekmali at bradley dot edu. Please set the message subject to: web-hw4.

Thank you.

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