Curriculum

Intro

This a demo of some feature that we could benefit from.

See the source code listings below with callouts, that’s the most interesting.

What is needed to render this in HTML?

• Ruby

• AsciiDoctor Gem

• CodeRay Gem (for highlighting)

That’s it. In Ubuntu install sudo gem install asciidoctor coderay. Then create a SAMPLE.adoc file. Then do this: asciidoctor SAMPLE.adoc.

Note	See the first two line in this file. In the source of it if you’re seeing HTML. Those two lines are needed for syntax highlight and callout icons.

Python to Java

JDK Installation

Do this. Do that. It works if you execute java and something happens other than an error being thrown you’re on the right track mate!

Hello World!

For starters see these two programs. One in Python. The other in Java.

The two are the same semantically!

Tip	Pro tip …​ write these into an editor don’t copy paste them!

fizzbuzz = ''

start = int(input("Start Value:"))
end = int(input("End Value:"))

for i in range(start,end+1):
    if i%3 == 0:
        fizzbuzz += "fizz"
    if i%5 == 0:
        fizzbuzz += "buzz"
    if i%3 != 0 and i%5 != 0:
        fizzbuzz += str(i)

    fizzbuzz += ' '

print(fizzbuzz)

And here’s the Java stuff.

public class FizzBuzz {
  public static void main(String[] args) {
    for(int i = 1; i <= 100; i++) {
      if (((i % 5) == 0) && ((i % 7) == 0))
        System.out.print("fizzbuzz");
      else if ((i % 7) == 0) System.out.print("buzz");
      else System.out.print(i);
      System.out.print(" ");
    }
    System.out.println();
  }
}

Try them both.

Let me show you the differences!

Okay, let’s look at it a little closer!

public class FizzBuzz {
  public static void main(String[] args) { // (1)
    for(int i = 1; i <= 100; i++) { // (2)
      if (((i % 5) == 0) && ((i % 7) == 0))
        System.out.print("fizzbuzz"); // (3)
      else if ((i % 7) == 0) System.out.print("buzz");
      else System.out.print(i);
      System.out.print(" ");
    }
    System.out.println();
  }
}

1. Okay, so do you remember def main() from Python? Same stuff, different cover.

2. This is like Python’s for loop combined with range.

3. Remember print()? Well there you go then. Same stuff!

Video Wrap Up!