Ch. 1 Windows Command Prompt HW

Homework Instructions: Refer to the Ch 01 PDF file for the instructions.

Inc.: Tic-Tac-Toe, Painter, Ch 1 pp 22-25.

IS 2063 Chapter 1: Using Windows Command Prompt to Run Java Programs

Purpose: To familiarize you with how to execute a Java application from the Windows Command
Prompt.

Prep Work:
1. You should’ve already installed DrJava and Amazon Corretto 8 on your own computer per

instructions for Software Option 1 given to you in CHAPTER COURSEWORK >> First Things
First (Getting Started).

2. Otherwise, UTSA IT has installed DrJava and Amazon Corretto 8 on UTSA’s VDI (Virtual Desktop
Infrastructure). Please refer to Software Option 2 in CHAPTER COURSEWORK >> First
Things First (Getting Started).

3. Download the zip file posted with these instructions. Save it to a folder for chapter 1. Extract its
content and review the file on Command Prompt commands and how to change directories in
Command Prompt. All you have to do is point to the zip file, right click, and “Extract Here”.
During the extraction make sure your files are not nested within multiple folders of the same
name.

Instructions:

1. Open a Word document saved with your LastNameFirstInitialYourSecNoCmdPrompt. Example:

JonesE001CmdPrompt. Create 2 sections. One called TicTacToeTest with screenshots for
running the program and similarly for Painter.

2. TicTacToeTest Screenshots Section
a. In Command Prompt show that you can navigate to the correct drive, then the correct folder

containing the program, and type the command to run the program, but don’t hit enter just yet.
i. Screenshot the navigation commands in the Command Prompt window and insert in the

section of the Word document for TicTacToeTest.
ii. Now, hit enter to Run the program.

b. First Move: Keep in mind that the computing begins counting at 0, so 0 is row or column 1; 1
is row or column 2; 2 is row or column 3.
i. Player 1 marks row 3, column 2.
ii. Player 2 marks row 1, column 3.
iii. Screenshot each player’s move including the row and column entries, insert into the Word

document.
c. Second Move:

i. Player 1 marks row 2, column 2.
ii. Player 2 marks row 1, column 2.
iii. Screenshot each player’s move including the row and column entries, insert into the Word

document
3. Painter Screenshots Section

a. Go to the Deitel Ch 1 PDF in the attached zip file for pp 22-25 and follow the instructions from
numbers 4 to 9.

b. Screenshot the Painter window (must include the title bar with the app name, dropdown lists
and buttons) showing each step of how you draw the face per the instructions in 4a and insert
in the section of the Word document for Painter.

Inc.: Tic-Tac-Toe, Painter, Ch 1 pp 22-25.

Submission Requirements: Upload your Word document with the screenshots to Blackboard by
the due date.

Files:
• Zip file content:

o Tic-Tac-Toe and painter folders that have the programs you’ll be running, and a
o document called Command Prompt Commands and Changing Directories that

instructs you on how to run Windows Command Prompt, navigate to drives and directories,
and compile and run your Java programs, and

o Deitel Ch 1 PP 22-25 on running the Painter program.

Chapter 1/Command Prompt Commands and Changing Directories

Windows Command Prompt Commands and Changing Directories
Click Above Link for Different MS-DOS Commands

1. The System Environment variable settings you made to your computer enable you to compile or run a Java

program at the Command Prompt window.

2. Go to the folder containing the Java files to be compiled or run.

Click ATM in the path field until it’s highlighted
and the path is visible.

C:\Users\YourComputersName\Desktop\ATM

In place of the path type cmd. The Windows
Command Prompt Window defaulted to the
highlighted path (directory).

3. OR Clicking Start, Run, then type cmd in the Run window.

4. OR Clicking Start, Programs, Accessories, then Command Prompt.

5. javac is a Java command used from the Command Prompt to compile a source code program. Your source
code programs end with a .java file extension. Source code files have to be compiled first to flush out any
syntax errors (language errors). If there are no errors, then javac produces a .class version of the .java file.

6. java is a Java command used from the Command Prompt to run/execute the bytecode or .class file. Below
are the formats for the Java commands.

a. javac NameOfProgram.java

b. java NameOfProgram

Compiles a Java source file – requires .java file extension

Runs a .class bytecode file – requires no file extension

https://www.computerhope.com/msdos.htm#02

HOW TO NAVIGATE TO DRIVES AND DIRECTORIES

Type the drive letter for your jump drive
followed by a colon.

Use cd\ (no space after) or cd (space after) followed by the name of the folder containing your Java files.

You are now in the ATM folder (directory) on the G: drive. Ready to use javac or java .

Navigating to the Correct Folder: Use OneDrive in path if files are stored on it. abc123 applies to school computers.

Navigating to Your Jump/Flash Drive

C:\Documents and Settings\ abc123>cd\Documents and Settings\abc123\My Documents\ATM

C:\Documents and Settings\ abc123\My Documents\ATM>

 Use cd\ followed by all the folder and subfolder names until you get to your Java files.

You are now in the ATM folder (directory) that is within the folder on the
drive for your computer or the school’s computer. Keep in mind the path
is dictated by where you downloaded/saved/unzipped the ATM folder.
Now you’re ready to use javac (to compile) or java (to run) a Java file.

C:\Documents and Settings\ abc123>cd My Documents\ATM

 Use cd followed by the folder and subfolder names within the current path. OR

C:\Documents and Settings\ abc123\cd Desktop

C:\Documents and Settings\ abc123\Desktop>

Use cd Desktop to change to the Desktop.

Use cd.. to get back to previous directory. cd\ goes back to your root directory.

Use dir to list what is in the directory. Use cls to
clear the screen.

OR C:\Users\YourComputersName\OneDrive\Desktop\ATM

Chapter 1/Deitel Ch 1 PP 22-25

22 Chapter I Introduction to Computers . the Internet and Java

Select a shape

Specify
whether a

rectangle or
ova l is filled

with color

Close
button

a) Painter app runn ing on Windows

b) Painter app runn ing on Linux.

c) Painter app running on OS X.

Close – F{:l n n Painter
button 1…:..-__:.-~——;..;:;;=———–1

~lack __jJ (, Line _i) Cl Filled ~do

0 0)

Fig. 1.11 I Painter app executing in Windows 7. Lin ux and OS X.

Close button

entire drawing

Undo the last
shape that was
added to the
drawing

[Note: Java commands are case sensitive-that is, uppercase letters are different
from lowercase letters. It’s important to type the name of this application as Paint
er with a capital P. Otherwise, the application will not execute. Specifying the
. class extension when using the java command results in an error. Also, if you
receive the error message, “Exception in thread “main” java .lang. NoCl ass
DefFoundError: Painter ,” your system has a CLASSPATH problem. Please refer to

the Before You Begin section for instructions to help you ftx this problem.]

4. Drawing a filled yellow oval for the face. Select Yellow as the drawing color, Oval ‘
as the shape and check the Filled checkbox, then drag the mouse to draw a large

oval (Fig. 1.12).

1. 10 Test-Driving a j ava Appli cation 23

~~~
1 • . … .. 1 ( ~· -· t • ) 0 Fil led [ Und~ J

(435,295)
l)

Fig. 1.1 2 I Drawing a fi lled yellow ova l for the face.

5. Drawing blue eyes. Select Blue as the drawing color, then draw two small ovals as
the eyes (Fig. 1.1 3).

GJ[§l~

(37 1,131)

Fig. 1. 13 I Drawing blue eyes.

6. D rawing black eyebrows and a nose. Select Black as the drawing color and Line
as the shape, then draw eyebrows and a nose (Fig. 1.14) . Lines do not have fi ll ,
so leaving the Filled checkbox checked has no effect when drawing lines.

24 Chapter I Introduction to Computers , the Internet and Java

Fig. 1.14 I Drawing black eyebrows and a nose.

7. Drawing a magenta mouth. Select Magenta as the drawing color and Oval as the

shape, then draw a mouth (Fig. 1.15).

(Magenta ! • ]( ‘-ov_a_t _……_

(435,169)

Fig. 1.1 S I Drawing a magenta mouth.

8. Drawing a yellow oval on the mouth to make a smile. Select Yellow as the drawing
color, then draw an oval to change the magenta oval into a smile (Fig. 1.16) .

——

(328,252)

1. 1 I Internet and World Wide Web :ZS

l£]@~

[ C l~ar J

——

Fig. 1.16 I Drawing a yel low oval on the mouth to make a sm ile.

9. Exiting the Painter application. To exit the Painter application, click the Close
button (in the window’s upper-right corner on Windows and the upper-left cor
ner on Linux and OS X). Closing the window causes the Painter application to
terminate.

1.11 Internet and World Wide Web
In the late 1960s, ARP A-the Advanced Research Projects Agency of the United States De
partment of Defense-rolled out plans for networking the main computer systems of ap
proximately a dozen ARP A-funded universities and research institutions. The computers
were to be connected with communications lines operating at speeds on the order of 50,000
bits per second, a stunning rate at a time when most people (of the few who even had net
working access) were connecting over telephone lines to computers at a rate of 110 bits per
second. Academic research was about to rake a giant leap forward. ARPA proceeded to im
plement what quickly became known as the ARPANET, the precursor to today’ s Internet.
Today’s fastest Internet speeds are on the order of billions of bits per second with trillion
bit-per-second speeds on the horizon!

Things worked out differently from the original plan. Although the ARPANET
enabled researchers to network their computers, irs main benefit proved to be the capa
bility for quick and easy communication via what came to be known as electronic mail (e
mail). This is true even on today’s Internet, with e-mail, instant messaging, file transfer
and social media such as Facebook and Twitter enabling billions of people worldwide to
communicate quickly and easily.

The protocol (set of rules) for communicating over the ARPANET became known as
the Transmission Control Protocol (TCP) . TCP ensured that messages, consisting of
sequentially numbered pieces called packets, were properly routed from sender to receiver,
arrived intact and were assembled in the correct order.

Chapter 1/painter/DrawFrame.class
public
synchronized
class DrawFrame
extends javax.swing.JFrame
implements java.awt.event.ItemListener, java.awt.event.ActionListener {

private java.awt.Color[]
colors;

private String[]
colorNames;

private String[]
shapes;

private DrawPanel
drawPanel;

private javax.swing.JButton
undoButton;

private javax.swing.JButton
clearButton;

private javax.swing.JComboBox
colorChoices;

private javax.swing.JComboBox
shapeChoices;

private javax.swing.JCheckBox
filledCheckBox;

public void DrawFrame();

public void
itemStateChanged(java.awt.event.ItemEvent);

public void
actionPerformed(java.awt.event.ActionEvent);
}

Chapter 1/painter/DrawFrame.java

// GCS Exercise 14.17 Solution: DrawFrame.java

// Program that creates a panel for the user to draw shapes.

// Allows the user to choose the shape and color.

import
java
.
awt
.
BorderLayout
;

import
java
.
awt
.
Color
;

import
java
.
awt
.
FlowLayout
;

import
java
.
awt
.
event
.
ActionEvent
;

import
java
.
awt
.
event
.
ActionListener
;

import
java
.
awt
.
event
.
ItemEvent
;

import
java
.
awt
.
event
.
ItemListener
;

import
javax
.
swing
.
JButton
;

import
javax
.
swing
.
JCheckBox
;

import
javax
.
swing
.
JComboBox
;

import
javax
.
swing
.
JFrame
;

import
javax
.
swing
.
JLabel
;

import
javax
.
swing
.
JPanel
;

public

class

DrawFrame

extends

JFrame

implements

ItemListener
,

ActionListener

{

// Array of possible colors

private

Color
[]
colors
=

{
Color
.
BLACK
,

Color
.
BLUE
,

Color
.
CYAN
,

Color
.
DARK_GRAY
,

Color
.
GRAY
,

Color
.
GREEN
,

Color
.
LIGHT_GRAY
,

Color
.
MAGENTA
,

Color
.
ORANGE
,

Color
.
PINK
,

Color
.
RED
,

Color
.
WHITE
,

Color
.
YELLOW
};

// Array of names corresponding to the possible colors

private

String
[]
colorNames
=

{
“Black”
,

“Blue”
,

“Cyan”
,

“Dark Gray”
,

“Gray”
,

“Green”
,

“Light Gray”
,

“Magenta”
,

“Orange”
,

“Pink”
,

“Red”
,

“White”
,

“Yellow”
};

// Array of possible shapes

private

String
[]
shapes
=

{
“Line”
,

“Oval”
,

“Rectangle”
};

private

DrawPanel
drawPanel
;

// panel that handles the drawing

private

JButton
undoButton
;

// button to undo the last shape drawn

private

JButton
clearButton
;

// button to clear all shapes

private

JComboBox
< String >
colorChoices
;

// combo box for selecting the color

private

JComboBox
< String >
shapeChoices
;

// combo box for selecting shapes

private

JCheckBox
filledCheckBox
;

// check box to toggle filled shapes

// constructor

public

DrawFrame
()

{

super
(
“Painter”
);

// create a panel to store the components at the top of the frame

JPanel
topPanel
=

new

JPanel
();

// create a combobox for choosing colors

colorChoices
=

new

JComboBox
< String >
(
colorNames
);

colorChoices
.
addItemListener
(
this
);

topPanel
.
add
(
colorChoices
);

// create a combobox for choosing shapes

shapeChoices
=

new

JComboBox
< String >
(
shapes
);

shapeChoices
.
addItemListener
(
this
);

topPanel
.
add
(
shapeChoices
);

// create a checkbox to determine whether the shape is filled

filledCheckBox
=

new

JCheckBox
(
“Filled”
);

filledCheckBox
.
addItemListener
(
this
);

topPanel
.
add
(
filledCheckBox
);

// create a button for clearing the last drawing

undoButton
=

new

JButton
(
“Undo”
);

undoButton
.
addActionListener
(
this
);

topPanel
.
add
(
undoButton
);

// create a button for clearing all drawings

clearButton
=

new

JButton
(
“Clear”
);

clearButton
.
addActionListener
(
this
);

topPanel
.
add
(
clearButton
);

// add the top panel to the frame

add
(
topPanel
,

BorderLayout
.
NORTH
);

// create a label for the status bar

JLabel
statusLabel
=

new

JLabel
(
“(0,0)”
);

// add the status bar at the bottom

add
(
statusLabel
,

BorderLayout
.
SOUTH
);

// create the DrawPanel with its status bar label

drawPanel
=

new

DrawPanel
(
statusLabel
);

add
(
drawPanel
);

// add the drawing area to the center

}

// end DrawFrame constructor

// handle selections made to a combobox or checkbox

public

void
itemStateChanged
(
ItemEvent
e
)

{

if

(
e
.
getSource
()

==
shapeChoices
)

// choosing a shape

drawPanel
.
setShapeType
(
shapeChoices
.
getSelectedIndex
());

else

if

(
e
.
getSource
()

==
colorChoices
)

// choosing a color

drawPanel
.
setDrawingColor
(

colors
[
colorChoices
.
getSelectedIndex
()]);

else

if

(
e
.
getSource
()

==
filledCheckBox
)

// filled/unfilled

drawPanel
.
setFilledShape
(
filledCheckBox
.
isSelected
());

}

// end method itemStateChanged

// handle button clicks

public

void
actionPerformed
(
ActionEvent
e
)

{

if

(
e
.
getSource
()

==
undoButton
)

drawPanel
.
clearLastShape
();

else

if

(
e
.
getSource
()

==
clearButton
)

drawPanel
.
clearDrawing
();

}

// end method actionPerformed

}

// end class DrawFrame

/**************************************************************************

* *

* DISCLAIMER: The authors and publisher of this book have used their *

* best efforts in preparing the book. These efforts include the *

* development, research, and testing of the theories and programs *

* to determine their effectiveness. The authors and publisher make *

* no warranty of any kind, expressed or implied, with regard to these *

* programs or to the documentation contained in these books. The authors *

* and publisher shall not be liable in any event for incidental or *

* consequential damages in connection with, or arising out of, the *

* furnishing, performance, or use of these programs. *

**************************************************************************/

Chapter 1/painter/DrawPanel$1.class
synchronized
class DrawPanel$1 {
}

Chapter 1/painter/DrawPanel$MouseHandler.class
synchronized
class DrawPanel$MouseHandler
extends java.awt.event.MouseAdapter
implements java.awt.event.MouseMotionListener {

private void DrawPanel$MouseHandler(DrawPanel);

public void
mousePressed(java.awt.event.MouseEvent);

public void
mouseReleased(java.awt.event.MouseEvent);

public void
mouseDragged(java.awt.event.MouseEvent);

public void
mouseMoved(java.awt.event.MouseEvent);
}

Chapter 1/painter/DrawPanel.class
public
synchronized
class DrawPanel
extends javax.swing.JPanel {

private MyShape[]
shapes;

private int
shapeCount;

private int
shapeType;

private MyShape
currentShape;

private java.awt.Color
currentColor;

private boolean
filledShape;

private javax.swing.JLabel
statusLabel;

public void DrawPanel(javax.swing.JLabel);

public void
paintComponent(java.awt.Graphics);

public void
setShapeType(int);

public void
setDrawingColor(java.awt.Color);

public void
clearLastShape();

public void
clearDrawing();

public void
setFilledShape(boolean);
}

Chapter 1/painter/DrawPanel.java

// GCS Exercise 14.17 Solution: DrawPanel.java

// JPanel that allows the user to draw shapes with the mouse.

import
java
.
awt
.
Color
;

import
java
.
awt
.
Graphics
;

import
java
.
awt
.
event
.
MouseAdapter
;

import
java
.
awt
.
event
.
MouseEvent
;

import
java
.
awt
.
event
.
MouseMotionListener
;

import
javax
.
swing
.
JLabel
;

import
javax
.
swing
.
JPanel
;

public

class

DrawPanel

extends

JPanel

{

private

MyShape
[]
shapes
;

// array containing all the shapes

private

int
shapeCount
;

// total number of shapes

private

int
shapeType
;

// the type of shape to draw

private

MyShape
currentShape
;

// the current shape being drawn

private

Color
currentColor
;

// the color of the shape

private

boolean
filledShape
;

// whether this shape is filled

private

JLabel
statusLabel
;

// label displaying mouse coordinates

// constructor

public

DrawPanel
(
JLabel
status
)

{

shapes
=

new

MyShape
[
100
];

// create the array

shapeCount
=

0
;

// initially we have no shapes

setShapeType
(
0
);

// initially draw lines

setDrawingColor
(
Color
.
BLACK
);

// start drawing with black

setFilledShape
(
false
);
// not filled by default

currentShape
=

null
;

// not drawing anything initially

setBackground
(
Color
.
WHITE
);

// set a white background

// add the mouse listeners

MouseHandler
mouseHandler
=

new

MouseHandler
();

addMouseListener
(
mouseHandler
);

addMouseMotionListener
(
mouseHandler
);

// set the status label for displaying mouse coordinates

statusLabel
=
status
;

}

// end DrawPanel constructor

// draw shapes using polymorphism

public

void
paintComponent
(
Graphics
g
)

{

super
.
paintComponent
(
g
);

for

(
int
i
=

0
;
i
< shapeCount ; i ++ ) shapes [ i ]. draw ( g ); if ( currentShape != null ) currentShape . draw ( g ); } // end method paintComponent // sets the type of shape to draw public void setShapeType ( int shapeType ) { if ( shapeType < 0 || shapeType >

2
)

shapeType
=

0
;

this
.
shapeType
=
shapeType
;

}

// end method setShapeType

// sets the drawing color

public

void
setDrawingColor
(
Color
c
)

{

currentColor
=
c
;

}

// end method setDrawingColor

// clears the last shape drawn

public

void
clearLastShape
()

{

if

(
shapeCount
>

0
)

{

shapeCount
—
;

repaint
();

}

// end if

}

// end method clearLastShape

// clears all drawings on this panel

public

void
clearDrawing
()

{

shapeCount
=

0
;

repaint
();

}

// end method clearDrawing

// sets whether to draw a filled shape

public

void
setFilledShape
(
boolean
isFilled
)

{

filledShape
=
isFilled
;

}

// end method setFilledShape

// handles mouse events for this JPanel

private

class

MouseHandler

extends

MouseAdapter

implements

MouseMotionListener

{

// creates and sets the initial position for the new shape

public

void
mousePressed
(
MouseEvent
e
)

{

if

(
currentShape
!=

null
)

return
;

// create the appropriate shape based on shapeType

switch

(
shapeType
)

{

case

0
:

currentShape
=

new

MyLine
(
e
.
getX
(),
e
.
getY
(),

e
.
getX
(),
e
.
getY
(),
currentColor
);

break
;

case

1
:

currentShape
=

new

MyOval
(
e
.
getX
(),
e
.
getY
(),

e
.
getX
(),
e
.
getY
(),
currentColor
,
filledShape
);

break
;

case

2
:

currentShape
=

new

MyRect
(
e
.
getX
(),
e
.
getY
(),

e
.
getX
(),
e
.
getY
(),
currentColor
,
filledShape
);

break
;

}

// end switch

}

// end method mousePressed

// fixes the current shape onto the panel

public

void
mouseReleased
(
MouseEvent
e
)

{

if

(
currentShape
==

null
)

return
;

// set the second point on the shape

currentShape
.
setX2
(
e
.
getX
());

currentShape
.
setY2
(
e
.
getY
());

// set the shape only if there is room in the array

if

(
shapeCount
< shapes . length ) { shapes [ shapeCount ] = currentShape ; shapeCount ++ ; } // end if currentShape = null ; // clear the temporary drawing shape repaint (); } // end method mouseReleased // update the shape to the current mouse position while dragging public void mouseDragged ( MouseEvent e ) { if ( currentShape != null ) { currentShape . setX2 ( e . getX ()); currentShape . setY2 ( e . getY ()); repaint (); } // end if mouseMoved ( e ); // update status bar } // end method mouseDragged // updates the status bar to show the current mouse coordinates public void mouseMoved ( MouseEvent e ) { statusLabel . setText ( String . format ( "(%d,%d)" , e . getX (), e . getY ())); } // end method mouseMoved } // end class MouseHandler } // end class DrawPanel /************************************************************************** * (C) Copyright 1992-2014 by Deitel & Associates, Inc. and * * Pearson Education, Inc. All Rights Reserved. * * * * DISCLAIMER: The authors and publisher of this book have used their * * best efforts in preparing the book. These efforts include the * * development, research, and testing of the theories and programs * * to determine their effectiveness. The authors and publisher make * * no warranty of any kind, expressed or implied, with regard to these * * programs or to the documentation contained in these books. The authors * * and publisher shall not be liable in any event for incidental or * * consequential damages in connection with, or arising out of, the * * furnishing, performance, or use of these programs. * **************************************************************************/ Chapter 1/painter/MyBoundedShape.class public abstract synchronized class MyBoundedShape extends MyShape { private boolean filled; public void MyBoundedShape(); public void MyBoundedShape(int, int, int, int, java.awt.Color, boolean); public int getUpperLeftX(); public int getUpperLeftY(); public int getWidth(); public int getHeight(); public boolean isFilled(); public void setFilled(boolean); } Chapter 1/painter/MyBoundedShape.java Chapter 1/painter/MyBoundedShape.java // GCS Exercise 10.2 Solution: MyBoundedShape.java // Declaration of class MyBoundedShape. import java . awt . Color ; import java . awt . Graphics ; public abstract class MyBoundedShape extends MyShape { private boolean filled ; // whether this shape is filled // call default superclass constructor public MyBoundedShape () { super (); setFilled ( false ); } // end MyBoundedShape no-argument constructor // call superclass constructor passing parameters public MyBoundedShape ( int x1 , int y1 , int x2 , int y2 , Color color , boolean isFilled ) { super ( x1 , y1 , x2 , y2 , color ); setFilled ( isFilled ); } // end MyBoundedShape constructor // get upper left x coordinate public int getUpperLeftX () { return Math . min ( getX1 (), getX2 ()); } // end method getUpperLeftX // get upper left y coordinate public int getUpperLeftY () { return Math . min ( getY1 (), getY2 ()); } // end method getUpperLeftY // get shape width public int getWidth () { return Math . abs ( getX2 () - getX1 ()); } // end method getWidth // get shape height public int getHeight () { return Math . abs ( getY2 () - getY1 ()); } // end method getHeight // determines whether this shape is filled public boolean isFilled () { return filled ; } // end method is filled // sets whether this shape is filled public void setFilled ( boolean isFilled ) { filled = isFilled ; } // end method setFilled } // end class MyBoundedShape /************************************************************************** * (C) Copyright 1992-2014 by Deitel & Associates, Inc. and * * Pearson Education, Inc. All Rights Reserved. * * * * DISCLAIMER: The authors and publisher of this book have used their * * best efforts in preparing the book. These efforts include the * * development, research, and testing of the theories and programs * * to determine their effectiveness. The authors and publisher make * * no warranty of any kind, expressed or implied, with regard to these * * programs or to the documentation contained in these books. The authors * * and publisher shall not be liable in any event for incidental or * * consequential damages in connection with, or arising out of, the * * furnishing, performance, or use of these programs. * **************************************************************************/ Chapter 1/painter/MyLine.class public synchronized class MyLine extends MyShape { public void MyLine(); public void MyLine(int, int, int, int, java.awt.Color); public void draw(java.awt.Graphics); } Chapter 1/painter/MyLine.java Chapter 1/painter/MyLine.java // GCS Exercise 10.2 Solution: MyLine.java // Declaration of class MyLine. import java . awt . Color ; import java . awt . Graphics ; public class MyLine extends MyShape { // call default superclass constructor public MyLine () { super (); } // end MyLine no-argument constructor // call superclass constructor passing parameters public MyLine ( int x1 , int y1 , int x2 , int y2 , Color color ) { super ( x1 , y1 , x2 , y2 , color ); } // end MyLine constructor // draw line in specified color public void draw ( Graphics g ) { g . setColor ( getColor ()); g . drawLine ( getX1 (), getY1 (), getX2 (), getY2 ()); } // end method draw } // end class MyLine /************************************************************************** * (C) Copyright 1992-2014 by Deitel & Associates, Inc. and * * Pearson Education, Inc. All Rights Reserved. * * * * DISCLAIMER: The authors and publisher of this book have used their * * best efforts in preparing the book. These efforts include the * * development, research, and testing of the theories and programs * * to determine their effectiveness. The authors and publisher make * * no warranty of any kind, expressed or implied, with regard to these * * programs or to the documentation contained in these books. The authors * * and publisher shall not be liable in any event for incidental or * * consequential damages in connection with, or arising out of, the * * furnishing, performance, or use of these programs. * **************************************************************************/ Chapter 1/painter/MyOval.class public synchronized class MyOval extends MyBoundedShape { public void MyOval(); public void MyOval(int, int, int, int, java.awt.Color, boolean); public void draw(java.awt.Graphics); } Chapter 1/painter/MyOval.java Chapter 1/painter/MyOval.java // GCS Exercise 10.2 Solution: MyOval.java // Declaration of class MyOval. import java . awt . Color ; import java . awt . Graphics ; public class MyOval extends MyBoundedShape { // call default superclass constructor public MyOval () { super (); } // end MyOval no-argument constructor // call superclass constructor passing parameters public MyOval ( int x1 , int y1 , int x2 , int y2 , Color color , boolean isFilled ) { super ( x1 , y1 , x2 , y2 , color , isFilled ); } // end MyOval constructor // draw oval public void draw ( Graphics g ) { g . setColor ( getColor ()); if ( isFilled ()) g . fillOval ( getUpperLeftX (), getUpperLeftY (), getWidth (), getHeight ()); else g . drawOval ( getUpperLeftX (), getUpperLeftY (), getWidth (), getHeight ()); } // end method draw } // end class MyOval /************************************************************************** * (C) Copyright 1992-2014 by Deitel & Associates, Inc. and * * Pearson Education, Inc. All Rights Reserved. * * * * DISCLAIMER: The authors and publisher of this book have used their * * best efforts in preparing the book. These efforts include the * * development, research, and testing of the theories and programs * * to determine their effectiveness. The authors and publisher make * * no warranty of any kind, expressed or implied, with regard to these * * programs or to the documentation contained in these books. The authors * * and publisher shall not be liable in any event for incidental or * * consequential damages in connection with, or arising out of, the * * furnishing, performance, or use of these programs. * **************************************************************************/ Chapter 1/painter/MyRect.class public synchronized class MyRect extends MyBoundedShape { public void MyRect(); public void MyRect(int, int, int, int, java.awt.Color, boolean); public void draw(java.awt.Graphics); } Chapter 1/painter/MyRect.java Chapter 1/painter/MyRect.java // GCS Exercise 10.2 Solution: MyRect.java // Declaration of class MyRect. import java . awt . Color ; import java . awt . Graphics ; public class MyRect extends MyBoundedShape { // call default superclass constructor public MyRect () { super (); } // end MyRect no-argument constructor // call superclass constructor passing parameters public MyRect ( int x1 , int y1 , int x2 , int y2 , Color color , boolean isFilled ) { super ( x1 , y1 , x2 , y2 , color , isFilled ); } // end MyRect constructor // draw rectangle public void draw ( Graphics g ) { g . setColor ( getColor ()); if ( isFilled ()) g . fillRect ( getUpperLeftX (), getUpperLeftY (), getWidth (), getHeight ()); else g . drawRect ( getUpperLeftX (), getUpperLeftY (), getWidth (), getHeight ()); } // end method draw } // end class MyRect /************************************************************************** * (C) Copyright 1992-2014 by Deitel & Associates, Inc. and * * Pearson Education, Inc. All Rights Reserved. * * * * DISCLAIMER: The authors and publisher of this book have used their * * best efforts in preparing the book. These efforts include the * * development, research, and testing of the theories and programs * * to determine their effectiveness. The authors and publisher make * * no warranty of any kind, expressed or implied, with regard to these * * programs or to the documentation contained in these books. The authors * * and publisher shall not be liable in any event for incidental or * * consequential damages in connection with, or arising out of, the * * furnishing, performance, or use of these programs. * **************************************************************************/ Chapter 1/painter/MyShape.class public abstract synchronized class MyShape { private int x1; private int y1; private int x2; private int y2; private java.awt.Color myColor; public void MyShape(); public void MyShape(int, int, int, int, java.awt.Color); public void setX1(int); public int getX1(); public void setX2(int); public int getX2(); public void setY1(int); public int getY1(); public void setY2(int); public int getY2(); public void setColor(java.awt.Color); public java.awt.Color getColor(); public abstract void draw(java.awt.Graphics); } Chapter 1/painter/MyShape.java Chapter 1/painter/MyShape.java // GCS Exercise 10.2 Solution: MyShape.java // Declaration of class MyShape. import java . awt . Color ; import java . awt . Graphics ; public abstract class MyShape { private int x1 ; // x coordinate of first endpoint private int y1 ; // y coordinate of first endpoint private int x2 ; // x coordinate of second endpoint private int y2 ; // y coordinate of second endpoint private Color myColor ; // color of this shape // default constructor initializes values with 0 public MyShape () { this ( 0 , 0 , 0 , 0 , Color . BLACK ); // call constructor to set values } // end MyShape no-argument constructor // constructor public MyShape ( int x1 , int y1 , int x2 , int y2 , Color color ) { setX1 ( x1 ); // set x coordinate of first endpoint setY1 ( y1 ); // set y coordinate of first endpoint setX2 ( x2 ); // set x coordinate of second endpoint setY2 ( y2 ); // set y coordinate of second endpoint setColor ( color ); // set the color } // end MyShape constructor // set the x-coordinate of the first point public void setX1 ( int x1 ) { this . x1 = ( x1 >=

0

?
x1
:

0
);

}

// end method setX1

// get the x-coordinate of the first point

public

int
getX1
()

{

return
x1
;

}

// end method getX1

// set the x-coordinate of the second point

public

void
setX2
(
int
x2
)

{

this
.
x2
=

(
x2
>=

0

?
x2
:

0
);

}

// end method setX2

// get the x-coordinate of the second point

public

int
getX2
()

{

return
x2
;

}

// end method getX2

// set the y-coordinate of the first point

public

void
setY1
(
int
y1
)

{

this
.
y1
=

(
y1
>=

0

?
y1
:

0
);

}

// end method setY1

// get the y-coordinate of the first point

public

int
getY1
()

{

return
y1
;

}

// end method getY1

// set the y-coordinate of the second point

public

void
setY2
(
int
y2
)

{

this
.
y2
=

(
y2
>=

0

?
y2
:

0
);

}

// end method setY2

// get the y-coordinate of the second point

public

int
getY2
()

{

return
y2
;

}

// end method getY2

// set the color

public

void
setColor
(
Color
color
)

{

myColor
=
color
;

}

// end method setColor

// get the color

public

Color
getColor
()

{

return
myColor
;

}

// end method getColor

// abstract draw method

public

abstract

void
draw
(
Graphics
g
);

}

// end class MyShape