APCS Java

Hello World Without an IDE

noreply@blogger.com (Chris Thiel) — Fri, 5 Aug 2022 12:23:00 -0700

You can get a lot of insight in how coding works and how an Integrated Development Environment (IDE can help the process of
compiling, and executing the code you write.

Installing Java JDK SE 8 on Windows 10

noreply@blogger.com (Chris Thiel) — Sat, 18 Jul 2020 13:10:00 -0700

Installing the Java JDK 8 SE on Windows 10 for learning AP Computer Science A.

Links mentioned in the video:

mathorama.com/wiki
Summer Assignment Links links
java se jdk8 downloads.html
https://bluej.org/versions.html

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Game Applet Stage 3

noreply@blogger.com (Chris Thiel) — Sun, 7 Apr 2013 21:45:00 -0700

Stage 3 Enemies are made and tested.

Video

Source code is at http://apcs.mathorama.com/index.php?n=Main.SimpleGameTutorial and the game is at http://www.mathorama.com/ChickenLittle.html
If you missed Stage 1, you can get it at http://www.youtube.com/watch?v=u459QHRepC8 or https://archive.org/details/GameAppletStage1.
Stage 2 can be found at https://archive.org/details/GameAppletStage2

Game Applet Stage 2

noreply@blogger.com (Chris Thiel) — Sat, 6 Apr 2013 13:03:00 -0700

Stage 2 of the Game Applet is making the player and have it be controlled with keyboard input.
Source code is at apcs.mathorama.com and the game is at www.mathorama.com/ChickenLittle.html

Video
YouTube

If you missed Stage 1, you can get it at here

Game Applet: Stage 1

noreply@blogger.com (Chris Thiel) — Fri, 5 Apr 2013 20:26:00 -0700

Stage 1: Load the art and sounds to your eclipse project, so you can export your game into a .jar file to easily upload to a web site. You can get to the game and the source files at:
Link to Game
Link to Source Code
Link to Video
Link to Video on YouTube

Gridworld Overview

noreply@blogger.com (Chris Thiel) — Sun, 10 Mar 2013 01:38:00 -0800

Gridworld Overview Video

Making Images with GIMP

noreply@blogger.com (Chris Thiel) — Fri, 23 Nov 2012 21:40:00 -0800

Making Images With GIMP

You can download from http://www.gimp.org I show how to use some features in GIMP (from www.gimp.org) a open source image editor to use with your programs. First, drawing a picture from scratch, then cleaning up a photo, and finally tracing a photo to make a simple "cartoon" like image. For more info on where I used these images, see http://apcs.mathorama.com/

Installing BlueJ 2012

noreply@blogger.com (Chris Thiel) — Tue, 21 Aug 2012 22:49:00 -0700

Installing BlueJ 2012 Video

Here is a 2012 version to check to make sure your Java SDK and BlueJ IDE installation is working correctly. While I'm using Ubuntu 12.04 to show this, it works pretty much the same in Windows and OSX.

Comparator Interface in Gridworld

noreply@blogger.com (Chris Thiel) — Wed, 23 Nov 2011 15:50:00 -0800

Here is a customized World for Gridworld where the message on the top is updated to show how many bugs there are and the location of the furthest Bug in the grid. You need to implement the Comparator interface for the grid world Bug class. You need to define a compare method that returns an int. Get the location of each Bug and use the compareTo method of Location. Here is the starter code: apcs.mathorama.com

One To Ten Game Part 3

noreply@blogger.com (Chris Thiel) — Sun, 23 Oct 2011 17:48:00 -0700

Part 3 of the One to Ten Game which explains the Player Class. You can see a working copy at http://www.mathorama.com/OneToTenConsole.html

One to Ten Game Part 2

noreply@blogger.com (Chris Thiel) — Sat, 22 Oct 2011 23:46:00 -0700

Part 2 of 3 of the One to Ten Game

One to Ten Game Part 1

noreply@blogger.com (Chris Thiel) — Sat, 22 Oct 2011 16:39:00 -0700

In this tutorial, we make a game called "1 to 10" rather than tic-tac-toe (naughts and crosses). We will construct A Board Class in the first part along with a tester class. The idea is to move a page either one or two positions, and the one in the last position loses. The strategy is not to difficult, so eventually we can make a robot player who will always play perfectly.

Make a Java Class for Dots

noreply@blogger.com (Chris Thiel) — Sat, 3 Sep 2011 17:25:00 -0700

Make a new object that represents a dot using the eclipse IDE.

Making a JAR file in Eclipse

noreply@blogger.com (Chris Thiel) — Mon, 23 May 2011 00:42:00 -0700

If you want to publish your Applet to the web, you probably need to make a Java Archive, or JAR file that allows you to embed your Applet in a web page

Bug Demo:Circle Bug with Eclipse

noreply@blogger.com (Chris Thiel) — Mon, 14 Mar 2011 15:40:00 -0700

Use Eclipse to make a Circle Bug

Getting Started with APCS Java on Windows 7

noreply@blogger.com (Chris Thiel) — Sun, 22 Aug 2010 17:22:00 -0700

How to get what you need installed on your Windows 7 machine

Starting APCS with linux

noreply@blogger.com (Chris Thiel) — Sat, 21 Aug 2010 10:21:00 -0700

PokerHand

noreply@blogger.com (Chris Thiel) — Sat, 28 Nov 2009 14:02:00 -0800

To make a variety of Poker games, we need a way to evaluate and compare Poker hands. This video also shows how to implement an interface in an inner class, so that a user can press a button, and new poker hands are generated. Starter code can be found at the APCS Wiki.

Interfaces Part 3

noreply@blogger.com (Chris Thiel) — Wed, 25 Nov 2009 19:22:00 -0800

Implementing java interfaces for any Object. For "starter" code see the APCS Wiki

Java Interfaces Parts 1 and 2

noreply@blogger.com (Chris Thiel) — Mon, 23 Nov 2009 23:45:00 -0800

We introduce a way to use code to work with a variety of classes using interfaces. Source code can be found at the APCS Wiki

Making Classes with the Eclipse IDE

noreply@blogger.com (Chris Thiel) — Mon, 7 Sep 2009 14:55:00 -0700

Make mew Projects and Classes in Eclipse.

Dr Java interactions

noreply@blogger.com (Chris Thiel) — Sat, 22 Aug 2009 20:28:00 -0700

Click on the title to see the video. Here I show how to try the code snippets that you will see while reading Chapter 2 of Horstmann, "Java Concepts"

Cryptography

noreply@blogger.com (Chris Thiel) — Sat, 28 Feb 2009 13:57:00 -0800

Starting Code:


import java.util.Scanner;
/**
 * Simple Polyalphabetic Cryptography
 * 
 * @Chris Thiel 
 * @28 Feb 2009
 */
public class VignereCipherStartingCode
{
    private static final String alphabet="ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    private static int nextChar(String k, int i){
        i=i%k.length();
        String letter=k.substring(i,i+1);
        return alphabet.indexOf(letter);
    }
    public static String encode (String m, String k){
        String result="";
        for (int i=0; i<m.length(); i++){
            int offset=nextChar(k, i);
            String letter = m.substring(i,i+1);
            int newLetterIndex= alphabet.indexOf(letter)+offset;
            newLetterIndex=newLetterIndex % 26;
            result+=alphabet.substring( newLetterIndex, newLetterIndex+1);
        }
        return result;
    }
    public static String decode (String m, String k){
        String result="";   
        return result;
    }
    public static void main(String[] args)
    {
        Scanner kb=new Scanner(System.in);
        System.out.print("Type a key: ");
        String key=kb.nextLine();
        key=key.toUpperCase();
        key=key.replace(" ","");//omit spaces
        System.out.print("Type a message: ");
        String message=kb.nextLine();
        message=message.toUpperCase();
        message=message.replace(" ","");
        System.out.println("Using the key \""+key+"\" on \""+message+"\":");
        String codedMessage=encode(message,key);
        System.out.println("Coded="+codedMessage);
        System.out.println("Decoded="+decode(codedMessage,key));
        System.out.println("Using the key 'LOVE' we encode 'BOOHOO' we should get 'MCJLZC' : "+encode("BOOHOO","LOVE"));
        System.out.println("Using the key 'QUICK' we decode 'TOKMXEQ' we should get 'DUCKNOW': "+decode("TOKMXEQ","QUICK"));
  
    }
}

8 points: Complete the decode method so it can decipher the Vignere Cipher
9 points: Adapt this so it can do a Progressive Polyalphabetic Cipher rather than a key
10 points: Adapt the CarTalk Employee Applet's graphic user interface so that you can type a message in one text area, press a button and it shows the encoded text (using the Progressive Cipher), press another button and it shows the decoded text.
11 points: Add a "key field" to the Applet, and use the Vignere Cipher, working in a similiar fashion as the 10 point version

Cheater Catcher Project

noreply@blogger.com (Chris Thiel) — Mon, 19 Jan 2009 19:01:00 -0800

Part 2: Organizing the report that shows possible plagiarism might require another data structure to sort. Download the files you need to get started at here. Click the title to see the video.

Cheater Catcher Intro

noreply@blogger.com (Chris Thiel) — Mon, 19 Jan 2009 14:59:00 -0800

Overview of how to design a program that checks for patterns of matching words to detect plagiarism.