Name:
PID: (page 1)
https://www.google.com/search?q=cse15l
HTTP(S) URL: Where a single web resource is located, potentially including extra "arguments" (the query after ?)
Domain: The part of the url after the https:// and before the first slash, usually ending with .com, .edu, .net, .org, .gov, and so on, or country codes, like .uk, .jp, etc. This usually corresponds to some organization or person, like www.google.com above
Path (part): The part of the URL after the domain and before any ?. /search in the example above
Query: The part of the URL after the first ? and before the anchor. ?q=cse15l in the example above.
Anchor (or Fragment): The part of the URL after the #. Not in the example above; usually page-specific data (like where to scroll)
URLs are a lot like paths! Github Pages gives you your own domain (it's a subdomain of github.io) at <username>.github.io
What are the domains, paths, queries, and fragments of these URLs?
https://edstem.org/us/courses/41619/discussion/3541501
https://ucsd-cse15l-f23.github.io/week/week1/#week1-lab-report
https://map.concept3d.com/?id=1005#!m/576556
When you write a link in Markdown, just like in the filesystem, it can be relative or an absolute URL (kind of like an absolute path). Say you have a Github Pages site with the following structure (and say the username for the account is cs15l-student):
cs15l-lab-reports
|- index.md
|- lab-report-1.md
|- profile-pic.jpg
|- more-images/
|- screenshot.png
What are two ways to write an image link in lab-report-1.md that refer to profile-pic.jpg? What about to screenshot.png? What are some tradeoffs between them?
What are two ways to write a link from index.md that refers to the lab report page?
A developer is working on a Github Pages site. They are adding an image to their readme.md file. The image looks great
in their Code preview, but on their Github Pages site it appears as a broken image link. Here's their code preview
and their Github repository. You can see this repository at https://github.com/esolares/esolares.github.io
What's going on? What mistake or mistakes might they have made?
Name:
PID: (page 2)
import java.io.IOException;
import java.net.URI;
// This interface is defined in another file (we provide it in lab 2)
// interface URLHandler { String handleRequest(URI url); }
// URI is a built-in Java class with methods like getPath() and getQuery()
class Counter implements URLHandler {
int num = 0;
public String handleRequest(URI url) {
System.out.println(url);
if (url.getPath().equals("/")) { return String.format("Number: %d", num); }
// FILL in the block below to match the behavior in the browser below!
else if (url.getPath().equals("/count")) {
} else {
return "Don't know what to do with that path!";
}
}
}
class CounterMain {
public static void main(String[] args) throws IOException {
int port = Integer.parseInt(args[0]);
// We wrote Server; it is a very short class (you can see it in Server.java in lab 2)
Server.start(port, new Counter());
}
}
local $ javac Server.java Counter.java
local $ java CounterMain
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0
at CounterMain.main(Counter.java:24)
local $ java CounterMain 4000
Server Started! Visit http://localhost:4000 to visit.
Counter.java
What do you notice and wonder about this program?
Assume the WhereAmI.java file we've been using as an example is stored in the root folder of a GitHub repository at https://github.com/ucsd-cse15l-f23/WhereAmI
What commands should we use to compile and run the WhereAmI.java file at this point?
local $ ssh cs15lfa23zz@ieng6.ucsd.edu
remote $ git clone https://github.com/ucsd-cse15l-f23/WhereAmI
remote $