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ow to do all of this in java following the diagram in image 1 using these rules

ow to do all of this in java following the diagram in image 1 using these rules

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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how to do all of this in java following the diagram in image 1 using these rules 

 

For this task you will create a series of classes/interfaces that will implement 1-D and 2- automata (check out this link for information on 1-D automata as well as this one for 2- D). The classes/interfaces that we will create are shown in UML diagram below: Cell Life } Board automata <<interface>> drawable We have the abstract class Board which is made up of Cells, with both Cells and Board implementing the drawable interface. The concrete classes, Life and automata, implement 2D and 1D automata, respectively. <<enumeration>> state The Drawable interface is shown below. Put it in its own class file called Drawable.java public interface Drawable { void Draw(); public enum state {DEAD, ALIVE}; The enumeration class state is a special Java class that lets you create a new type, state, with very specific values. In our case, these values are DEAD and ALIVE. Here is the code for this class. This line must be inserted in a file called state.java. You will use this type when keeping track of the the state of a cell. Here is a bit a code showing how you might use it. states; int x = 0; if(0 == x) else s Cell -s: state -alive :char -dead : char Lets start with the Cell class. Here is the the UML class diagram for it: s = state. DEAD; //access values via type name state.ALIVE; +Cell(s:state) +Cell(s:state, alive :char, dead :char) +getState(): state +setState(s:state) : void +Draw(): void Next we have the abstract class Board Board #curr : Cell[][] #alive :char #dead : char // you can create a variable // of the enumurated type +numLiveCell((i :int, j : int): int +nextGen():void The state of the cell Character to draw on screen if cell is alive (default='#') Character to draw on screen if cell is dead (default='') Constructs a cell with the given state and default chars Constructs a cell with the given state and characters Returns state of cell Sets state of cell. Draw method implementation of Drawable interface A 2-D array used to represent the board (or row) Character to draw on screen if cell is alive (default='#') Character to draw on screen if cell is dead (default='') +Board(r:int; c:int) Creates array curr with r rows and c columns +Board(r:int, c:int, alive :char, dead :char) Like above but also changes printing characters +setBoard (s:state) : void Creates and sets the state of ALL cells in curr to s. +setCell(i :int, j : int, c : Cell): void +getCell(i :int, j : int) :Cell +Draw(): void Changes reference at curr[i][j] to c Returns reference to cell found at curr[i][j] Draw method implementation of Drawable interface How many live cells exist around cell at curr[i][j] Computes new generation based on old
Transcribed Image Text:For this task you will create a series of classes/interfaces that will implement 1-D and 2- automata (check out this link for information on 1-D automata as well as this one for 2- D). The classes/interfaces that we will create are shown in UML diagram below: Cell Life } Board automata <<interface>> drawable We have the abstract class Board which is made up of Cells, with both Cells and Board implementing the drawable interface. The concrete classes, Life and automata, implement 2D and 1D automata, respectively. <<enumeration>> state The Drawable interface is shown below. Put it in its own class file called Drawable.java public interface Drawable { void Draw(); public enum state {DEAD, ALIVE}; The enumeration class state is a special Java class that lets you create a new type, state, with very specific values. In our case, these values are DEAD and ALIVE. Here is the code for this class. This line must be inserted in a file called state.java. You will use this type when keeping track of the the state of a cell. Here is a bit a code showing how you might use it. states; int x = 0; if(0 == x) else s Cell -s: state -alive :char -dead : char Lets start with the Cell class. Here is the the UML class diagram for it: s = state. DEAD; //access values via type name state.ALIVE; +Cell(s:state) +Cell(s:state, alive :char, dead :char) +getState(): state +setState(s:state) : void +Draw(): void Next we have the abstract class Board Board #curr : Cell[][] #alive :char #dead : char // you can create a variable // of the enumurated type +numLiveCell((i :int, j : int): int +nextGen():void The state of the cell Character to draw on screen if cell is alive (default='#') Character to draw on screen if cell is dead (default='') Constructs a cell with the given state and default chars Constructs a cell with the given state and characters Returns state of cell Sets state of cell. Draw method implementation of Drawable interface A 2-D array used to represent the board (or row) Character to draw on screen if cell is alive (default='#') Character to draw on screen if cell is dead (default='') +Board(r:int; c:int) Creates array curr with r rows and c columns +Board(r:int, c:int, alive :char, dead :char) Like above but also changes printing characters +setBoard (s:state) : void Creates and sets the state of ALL cells in curr to s. +setCell(i :int, j : int, c : Cell): void +getCell(i :int, j : int) :Cell +Draw(): void Changes reference at curr[i][j] to c Returns reference to cell found at curr[i][j] Draw method implementation of Drawable interface How many live cells exist around cell at curr[i][j] Computes new generation based on old
Some comments on the Board class : ● numLiveCell() and nextGen() are both abstract methods When setBoard() is creating cells it uses the values of alive and dead in the cell constructor as well as the value of s. The Life and automata classes are very simple nearly identical. Life +Life(r:int, c:int, alive :char, dead :char) automata +automata (r:int, c:int, alive :char, dead This constructor calls the superclass constructor :char) This constructor calls the superclass constructor Don't forget that both classes must also implement the abstract methods numLiveCell() and nextGen() Your main method will need to do the following: 1. prompt the user for the name of the file that contains configuration data 2. Read the configuration data from the file (you will need a FILE /SCANNER object) 3. create and initialize the board (Life or automata) 4. display all generations The configuration file must have the following format: 1. the first line has three integers: number of rows (set it to 1 for automata), number of columns and the number of generations to display 2. the second (and remaining lines) contain the initial configuration of live cells here are two example files; one for the 1-D and another for the 2-D : 1 200 60 ***** ******* **** ***** ******** 30 30 100 the initial configuration data in the file should be interpreted as follows: each line give the configuration for a row of the board. A * in a certain column means that the cell at that row and column location is alive; a space ('') means the cell is dead. If you have fewer lines in the file than rows in your board, you can assume that the remaining rows have all dead cells. If a particular row has fewer characters than the number of columns, once again you can set the state of all remaining cells in that row to dead.
Transcribed Image Text:Some comments on the Board class : ● numLiveCell() and nextGen() are both abstract methods When setBoard() is creating cells it uses the values of alive and dead in the cell constructor as well as the value of s. The Life and automata classes are very simple nearly identical. Life +Life(r:int, c:int, alive :char, dead :char) automata +automata (r:int, c:int, alive :char, dead This constructor calls the superclass constructor :char) This constructor calls the superclass constructor Don't forget that both classes must also implement the abstract methods numLiveCell() and nextGen() Your main method will need to do the following: 1. prompt the user for the name of the file that contains configuration data 2. Read the configuration data from the file (you will need a FILE /SCANNER object) 3. create and initialize the board (Life or automata) 4. display all generations The configuration file must have the following format: 1. the first line has three integers: number of rows (set it to 1 for automata), number of columns and the number of generations to display 2. the second (and remaining lines) contain the initial configuration of live cells here are two example files; one for the 1-D and another for the 2-D : 1 200 60 ***** ******* **** ***** ******** 30 30 100 the initial configuration data in the file should be interpreted as follows: each line give the configuration for a row of the board. A * in a certain column means that the cell at that row and column location is alive; a space ('') means the cell is dead. If you have fewer lines in the file than rows in your board, you can assume that the remaining rows have all dead cells. If a particular row has fewer characters than the number of columns, once again you can set the state of all remaining cells in that row to dead.
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