Summary Write a program that demonstrates the skills you’ve learned throughout this quarter. This type of...
Summary Write a program that demonstrates the skills you’ve learned throughout this quarter.
This type of project offers only a few guidelines and requirements, allowing you to invest as much time, effort and imagination as you want. Submit your java programs (*.java) and any other I/O (*.txt) via Canvas You’ve worked quite hard to make it this far, so have a bit of fun with this project!
Design Brief: Use Case Scenario You are hired to develop a program for a client who described what he wants using the following scenario: “I like to drink a beverage every morning. This might be a cup of coffee or tea. If it is coffee, I like to choose (based on wake up time) b/w espresso (short or long) or latte with one or two shots of espresso, no foam, and extra hot. If it is tea, I like to have either green or black tea; the latter can be with lemon or with half and half and sugar, depending of the kind of tea. I have a large collection of coffee and tea capsules and my beverage machine could be programmed (in Java) to make a drink at the specified time. - I would like to have a program which will allow me to set up at evening my coming morning drink. -
Sometimes, I order my beverage from my neighborhood coffee shop specifying a pick up time .” Specifications You manager and you agreed on the following specs on what the solution will look like:
Design specs
Interactive: ask for options using UI (keyboard /Scanner or speech recognition =) ) and print out (screen) the choice
Store data in files (read from; write to …. )
Modular: use several classes and various methods (x2 points)
Use test cases (aka have a driver / main) Implementation specs
Define preconditions and postconditions
Handle exceptions
Use default values for your variables
Use arrays (many kinds of coffee, tea, milk, …) for your data
Comment and Document Rubric (100)
5 points for every bullet in the specs above
Compiles and run: 30 points
Examples of output: 20 points
Extra points for doing more
CSS 161 Requirements You are required to demonstrate 6 of the following features in your software program.
1. Functional Decomposition: Use functions to break up a large program into meaningful chunks, using input to and output from those functions where appropriate.
2. Looping with Repetition Control Structures: Use two of the following structures {for, while, do/while, foreach}.
3. Nested Loops: Use a loop within a loop in your program (see tic-tac-toe example). Note that this is automatically accomplished when using Multi-Dimensional Arrays.
4. Branching with Selection Control Structures: Use both an if/else and a switch statement in your code.
5. File IO: Read from or write to a file in your software. Examples of this include be reading in a preset pattern for the computer opponent’s answers in a game of rock/paper/scissors, or writing a file that logs each move the player makes, effectively recording a history of the game.
6. Using Multiple Classes: Build and use more than one class in your project.
7. Arrays: Make use of an Array in your software, and track its current number of live elements with an int.
8. Exception Handling with Try/Catch blocks: Add try/catch blocks to your code around possibly problematic code sections, and catch and report problems as they occur (ie, FileNotFoundException).
9. Class Design using Composition: Build a class that makes use of other preexisting classes. Your new class will “house” (or contain) the existing classes much like the AlarmClock Class contained multiple (inner) Time objects.
10. Class Design using Access Modifiers: Make all class-wide instance variables private in your class, and provide “getters” and “setters” to get and set the data accordingly. 11. Multi-Dimensional Arrays: Make use of any array with a dimensionality greater than one (see the tic-tac-toe example).
12. GUIs & Graphics (pick any one of the following) a. Use JOptionPane for message dialogs, input dialogs, etc. b. Build a Window like we did in class by using or extending a JFrame. c. Extend a JPanel and override its paint function for 2D rendering. d. Include some widgets like JButtons, JTextAreas, JComboboxes, etc.
13. Class Design using Inheritance: Since we’ve only hinted at this with our discussion, how might you accomplish this goal?
Notes
We’ll be covering some of the examples in class and in the lab, so you’ll have a bit more guidance than just this assignment.
Reuse, reuse, reuse! Can you accomplish multiple goals simultaneously? For example, doesn’t reading input from a file accomplish both File IO and Looping with Repetition Control Structures?
Look in the code examples for comments and further hints – they are the key to making this assignment as simple or as complex as you like. Hints
Use any example as a great starting point.
Consider the Step-by-step approach outlined below in the Stepwise Refinement section.
Don’t wait till the last minute to get started or get help. Stepwise Approach Software is frequently designed in an iterative (or stepwise) fashion. We “paint” a bit more of the big picture with each step we take, building pieces of our system and testing them as we progress. Simple projects can frequently be done by just directly attacking the problem, but for projects with many components (or classes in Java), a more formalized approach can help significantly. In this section, we’ll outline the steps required to complete this program, and suggest an approach that can be used to reduce the complexity of this project.
Step 1: File IO Choose an item above (say, File IO) and work on just that here. Focus on just getting input from a file or writing output to a file before moving on.
Step 2: Using Arrays Select a second objective (say, using arrays) and work on only that in this step. Ignoring your other goals, focus on simply declaring, using, and outputting results from your array.
Step 3,4,5,… Rinse, Refine & Repeat Select and work on only one goal at a time, taking small steps (and not giant leaps) as you progress. Make sure you’re done with and have tested the current step before proceeding to the next.
Homework Answers
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Hashtable;
public class TicTacToe
{
public static void main(String[] args)
{
TicTacToe now=new TicTacToe();
now.startGame();
}
private int[][] points;
private int[][] winp;
private int[] wval;
private char[][] grid;
private final int kcounter=3;
private final int crosscounterer=4;
private final int totalcount=5;
private final int playerid=0;
private final int compid=1;
private final int truceid=2;
private final int playingid=3;
private String movesPlayer;
private byte override;
private char[][] overridegrid={{'o','o','o'},{'o','o','o'},{'o','o','o'}};
private char[][] numpad={{'7','8','9'},{'4','5','6'},{'1','2','3'}};
private Hashtable<Integer,Integer> csetter;
private Hashtable<Integer,Integer> ksetter;
public void startGame()
{
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
System.out.print("Start?(y/n):");
char choice='y';
try
{
choice=br.readLine().charAt(0);
}
catch(Exception e)
{
System.out.println(e.getMessage());
}
if(choice=='n'||choice=='N')
{
return;
}
System.out.println("Enter Grid Values, as so:\n ");
display(numpad);
System.out.println("Begin");
int playerscore=0;
int compscore=0;
do
{
int result=startGame();
if(result==playerid)
playerscore++;
else if(result==compid)
compscore++;
System.out.println("Score: Player-"+playerscore+" AI-"+compscore);
System.out.print("Another?(y/n):");
try
{
choice=br.readLine().charAt(0);
}
catch(Exception e)
{
System.out.println(e.getMessage());
}
}while(choice!='n'||choice=='N');
System.out.println("Game over.");
}
private void put(int cell,int player)
{
int i=-1,j=-1;;
switch(cell)
{
case 1:i=2;j=0;break;
case 2:i=2;j=1;break;
case 3:i=2;j=2;break;
case 4:i=1;j=0;break;
case 5:i=1;j=1;break;
case 6:i=1;j=2;break;
case 7:i=0;j=0;break;
case 8:i=0;j=1;break;
case 9:i=0;j=2;break;
default:display(overridegrid);return;
}
char mark='x';
if(player==0)
mark='o';
grid[i][j]=mark;
display(grid);
}
private int startGame()
{
init();
display(grid);
int status=playingid;
while(status==playingid)
{
put(playerMove(),0);
if(override==1)
{
System.out.println("O winp.");
return playerid;
}
status=checkForWin();
if(status!=playingid)
break;
try{Thread.sleep(1000);}catch(Exception e){System.out.print(e.getMessage());}
put(compMove(),1);
status=checkForWin();
}
return status;
}
private void init()
{
movesPlayer="";
override=0;
points=new int[8][6];
winp=new int[][] //new int[8][3];
{
{7,8,9},
{4,5,6},
{1,2,3},
{7,4,1},
{8,5,2},
{9,6,3},
{7,5,3},
{9,5,1}
};
wval=new int[]{3,2,3,2,4,2,3,2,3};
grid=new char[][]{{' ',' ',' '},{' ',' ',' '},{' ',' ',' '}};
csetter=new Hashtable<Integer,Integer>();
ksetter=new Hashtable<Integer,Integer>();
}
private void mark(int m,int player)
{
for(int i=0;i<winp.length;i++)
for(int j=0;j<winp[i].length;j++)
if(winp[i][j]==m)
{
points[i][j]=1;
if(player==playerid)
points[i][kcounter]++;
else
points[i][crosscounterer]++;
points[i][totalcount]++;
}
}
private void fixwval()
{
for(int i=0;i<3;i++)
for(int j=0;j<3;j++)
if(points[i][j]==1)
if(wval[winp[i][j]-1]!=Integer.MIN_VALUE)
wval[winp[i][j]-1]=Integer.MIN_VALUE;
for(int i=0;i<8;i++)
{
if(points[i][totalcount]!=2)
continue;
if(points[i][crosscounterer]==2)
{
int p=i,q=-1;
if(points[i][0]==0)
q=0;
else if(points[i][1]==0)
q=1;
else if(points[i][2]==0)
q=2;
if(wval[winp[p][q]-1]!=Integer.MIN_VALUE)
{
wval[winp[p][q]-1]=6;
}
}
if(points[i][kcounter]==2)
{
int p=i,q=-1;
if(points[i][0]==0)
q=0;
else if(points[i][1]==0)
q=1;
else if(points[i][2]==0)
q=2;
if(wval[winp[p][q]-1]!=Integer.MIN_VALUE)
{
wval[winp[p][q]-1]=5;
}
}
}
}
private int compMove()
{
int cell=move();
System.out.println("Computer plays: "+cell);
//wval[cell-1]=Integer.MIN_VALUE;
return cell;
}
private int move()
{
int max=Integer.MIN_VALUE;
int cell=0;
for(int i=0;i<wval.length;i++)
if(wval[i]>max)
{
max=wval[i];
cell=i+1;
}
//This section ensures the computer never loses
//Remove it for a fair match
//Dirty kluge
if(movesPlayer.equals("76")||movesPlayer.equals("67"))
cell=9;
else if(movesPlayer.equals("92")||movesPlayer.equals("29"))
cell=3;
else if (movesPlayer.equals("18")||movesPlayer.equals("81"))
cell=7;
else if(movesPlayer.equals("73")||movesPlayer.equals("37"))
cell=4*((int)(Math.random()*2)+1);
else if(movesPlayer.equals("19")||movesPlayer.equals("91"))
cell=4+2*(int)(Math.pow(-1, (int)(Math.random()*2)));
mark(cell,1);
fixwval();
csetter.put(cell, 0);
return cell;
}
private int playerMove()
{
System.out.print("What's your move?: ");
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
int cell=0;
int okay=0;
while(okay==0)
{
try
{
cell=Integer.parseInt(br.readLine());
}
catch(Exception e)
{
System.out.println(e.getMessage());
}
if(cell==7494)
{
override=1;
return -1;
}
if((cell<1||cell>9)||wval[cell-1]==Integer.MIN_VALUE)
System.out.print("Invalid move. Try again:");
else
okay=1;
}
playerMoved(cell);
System.out.println();
return cell;
}
private void playerMoved(int cell)
{
movesPlayer+=cell;
mark(cell,0);
fixwval();
ksetter.put(cell, 0);
}
private int checkForWin()
{
int crossflag=0,knotflag=0;
for(int i=0;i<winp.length;i++)
{
if(csetter.containsKey(winp[i][0]))
if(csetter.containsKey(winp[i][1]))
if(csetter.containsKey(winp[i][2]))
{
crossflag=1;
break;
}
if(ksetter.containsKey(winp[i][0]))
if(ksetter.containsKey(winp[i][1]))
if(ksetter.containsKey(winp[i][2]))
{
knotflag=1;
break;
}
}
if(knotflag==1)
{
display(grid);
System.out.println("O winp.");
return playerid;
}
else if(crossflag==1)
{
display(grid);
System.out.println("X winp.");
return compid;
}
for(int i=0;i<wval.length;i++)
if(wval[i]!=Integer.MIN_VALUE)
return playingid;
System.out.println("Truce");
return truceid;
}
private void display(char[][] grid)
{
for(int i=0;i<3;i++)
{
System.out.println("\n-------");
System.out.print("|");
for(int j=0;j<3;j++)
System.out.print(grid[i][j]+"|");
}
System.out.println("\n-------");
}
}
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