Check The folder saying Lab 1 that where you will find the questions. Rest are help
Write a program that inputs (use JOptionPane.showInputDialog method) four numbers and graphs them as a pie chart. Use class Arc2D.Double and method fill of class Graphics2D to perform the drawing. Draw each piece of the pie in a separate color.
Given program (Lab_1_2_start_Up) is an application that allows the user to select a shape from a JComboBox and draws it 20 times with random locations and dimensions in method paintComponent. The first item in the JComboBox should be the default shape that is displayed the first time paintComponent is called. (Screenshot 1 & 2)
Lab_1_1_Help/Shapes.java
Lab_1_1_Help/Shapes.java
// Lab 1 Question 1 help
import
javax
.
swing
.
*
;
public
class
Shapes
{
// execute application
public
static
void
main
(
String
[]
args
)
{
int
length
;
int
width
;
// create frame for ShapesJPanel
JFrame
frame
=
new
JFrame
(
“Drawing 2D shapes”
);
frame
.
setDefaultCloseOperation
(
JFrame
.
EXIT_ON_CLOSE
);
// input the length and width
length
=
Integer
.
parseInt
(
JOptionPane
.
showInputDialog
(
frame
,
“Please enter the length:”
));
width
=
Integer
.
parseInt
(
JOptionPane
.
showInputDialog
(
frame
,
“Please enter the width:”
));
// create ShapesJPanel
ShapesJPanel
shapesJPanel
=
new
ShapesJPanel
(
length
,
width
);
frame
.
add
(
shapesJPanel
);
frame
.
setSize
(
425
,
200
);
frame
.
setVisible
(
true
);
}
}
// end class Shapes
Lab_1_1_Help/ShapesJPanel.java
Lab_1_1_Help/ShapesJPanel.java
// Lab 1 Question 1 help
import
java
.
awt
.
*
;
import
java
.
awt
.
event
.
ActionEvent
;
import
java
.
awt
.
event
.
ActionListener
;
import
java
.
awt
.
geom
.
Rectangle2D
;
import
javax
.
swing
.
*
;
public
class
ShapesJPanel
extends
JPanel
{
private
int
length
;
private
int
width
;
private
JButton
exitJButton
;
//constructor to receive inputs
public
ShapesJPanel
(
int
length
,
int
width
){
this
.
length
=
length
;
this
.
width
=
width
;
exitJButton
=
new
JButton
(
“Exit”
);
exitJButton
.
addActionListener
(
new
ActionListener
()
{
@
Override
public
void
actionPerformed
(
ActionEvent
e
)
{
int
result
=
JOptionPane
.
showConfirmDialog
(
null
,
“Are you Sure?”
);
System
.
out
.
println
(
result
);
if
(
result
==
0
){
JOptionPane
.
showMessageDialog
(
null
,
“Thank you for using this program”
,
“Bye!”
,
JOptionPane
.
PLAIN_MESSAGE
);
//dispose();
System
.
exit
(
0
);}
}
}
);
this
.
setLayout
(
new
BorderLayout
());
this
.
add
(
exitJButton
,
BorderLayout
.
SOUTH
);
}
// draw shapes with Java 2D API
@
Override
public
void
paintComponent
(
Graphics
g
)
{
super
.
paintComponent
(
g
);
Graphics2D
g2d
=
(
Graphics2D
)
g
;
// cast g to Graphics2D
// draw 2D rectangle in red
g2d
.
setPaint
(
Color
.
RED
);
g2d
.
setStroke
(
new
BasicStroke
(
10.0f
));
g2d
.
draw
(
new
Rectangle2D
.
Double
(
80
,
30
,
width
,
length
));
}
}
// end class ShapesJPanel
Lab_1_2_StartUp/SelectShape.java
Lab_1_2_StartUp/SelectShape.java
// Lab 1 Question 2 StartUp file
import
javax
.
swing
.
JFrame
;
public
class
SelectShape
{
public
static
void
main
(
String
args
[])
{
SelectShapeJFrame
selectShapeJFrame
=
new
SelectShapeJFrame
();
selectShapeJFrame
.
setDefaultCloseOperation
(
JFrame
.
EXIT_ON_CLOSE
);
selectShapeJFrame
.
setSize
(
420
,
470
);
// set frame size
selectShapeJFrame
.
setVisible
(
true
);
// display frame
}
}
// end class SelectShape
/**************************************************************************
* (C) Copyright 1992-2018 by Deitel & Associates, Inc. and *
* Prentice Hall. 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. *
*************************************************************************/
Lab_1_2_StartUp/SelectShapeJFrame.java
Lab_1_2_StartUp/SelectShapeJFrame.java
// Lab 1 Question 2 StartUp file
// Draw a shape 20 times in random positions
import
java
.
awt
.
BorderLayout
;
import
java
.
awt
.
event
.
ItemListener
;
import
java
.
awt
.
event
.
ItemEvent
;
import
javax
.
swing
.
JComboBox
;
import
javax
.
swing
.
JFrame
;
public
class
SelectShapeJFrame
extends
JFrame
{
private
ShapeOption
shapeOptions
[]
=
{
ShapeOption
.
OVAL
,
ShapeOption
.
RECTANGLE
};
private
ShapeOption
shape
=
ShapeOption
.
OVAL
;
private
JComboBox
<
ShapeOption
>
choiceJComboBox
;
private
SelectShapeJPanel
selectShapeJPanel
;
public
SelectShapeJFrame
()
{
super
(
“Selecting Shapes”
);
selectShapeJPanel
=
new
SelectShapeJPanel
();
choiceJComboBox
=
new
JComboBox
<
ShapeOption
>
(
shapeOptions
);
choiceJComboBox
.
addItemListener
(
new
ItemListener
()
// anonymous inner class
{
public
void
itemStateChanged
(
ItemEvent
e
)
{
selectShapeJPanel
.
setShape
(
(
ShapeOption
)
choiceJComboBox
.
getSelectedItem
());
repaint
();
}
}
);
add
(
selectShapeJPanel
,
BorderLayout
.
CENTER
);
add
(
choiceJComboBox
,
BorderLayout
.
SOUTH
);
}
}
// end class SelectShapeJFrame
Lab_1_2_StartUp/SelectShapeJPanel.java
Lab_1_2_StartUp/SelectShapeJPanel.java
// Lab 1 Question 2 StartUp file
// Draw a shape 20 times in random positions
import
java
.
awt
.
Color
;
import
java
.
awt
.
Graphics
;
import
java
.
util
.
Random
;
import
javax
.
swing
.
JPanel
;
public
class
SelectShapeJPanel
extends
JPanel
{
private
final
int
SIZE
=
400
;
private
ShapeOption
shape
=
ShapeOption
.
OVAL
;
// draw the new shape in random locations 20 times
public
void
paintComponent
(
Graphics
g
)
{
super
.
paintComponent
(
g
);
Random
random
=
new
Random
();
// get random-number generator
for
(
int
count
=
1
;
count
<=
20
;
count
++
)
{
// add 10 and 25 to prevent drawing over edge
int
x
=
(
int
)
(
random
.
nextFloat
()
*
SIZE
)
+
10
;
int
y
=
(
int
)
(
random
.
nextFloat
()
*
SIZE
)
+
25
;
int
width
=
(
int
)
(
random
.
nextFloat
()
*
(
SIZE
-
x
));
int
height
=
(
int
)
(
random
.
nextFloat
()
*
(
SIZE
-
y
));
g
.
setColor
(
Color
.
BLUE
);
// draw the appropriate shape
switch
(
shape
)
{
case
OVAL
:
g
.
drawOval
(
x
,
y
,
width
,
height
);
break
;
case
RECTANGLE
:
g
.
drawRect
(
x
,
y
,
width
,
height
);
break
;
}
}
}
// set new shape
public
void
setShape
(
ShapeOption
preference
)
{
shape
=
preference
;
}
}
// end class SelectShapeJPanel
Lab_1_2_StartUp/ShapeOption.java
Lab_1_2_StartUp/ShapeOption.java
// Lab 1 Question 2 StartUp file
// Defines an enum type for the program's shape options.
public
enum
ShapeOption
{
// declare contents of enum type
OVAL
(
1
),
RECTANGLE
(
2
);
private
final
int
value
;
// current shape
ShapeOption
(
int
valueOption
)
{
value
=
valueOption
;
}
public
int
getValue
()
{
return
value
;
}
}
// end enum ShapeOption
fig27_07_08/ShowColors2.java
fig27_07_08/ShowColors2.java
// Fig. 13.8: ShowColors2.java
// Choosing colors with JColorChooser.
import
javax
.
swing
.
JFrame
;
public
class
ShowColors2
{
// execute application
public
static
void
main
(
String
[]
args
)
{
ShowColors2JFrame
application
=
new
ShowColors2JFrame
();
application
.
setDefaultCloseOperation
(
JFrame
.
EXIT_ON_CLOSE
);
}
}
// end class ShowColors2
/**************************************************************************
* (C) Copyright 1992-2018 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. *
*************************************************************************/
fig27_07_08/ShowColors2JFrame.java
fig27_07_08/ShowColors2JFrame.java
// Fig. 13.7: ShowColors2JFrame.java
// Choosing colors with JColorChooser.
import
java
.
awt
.
BorderLayout
;
import
java
.
awt
.
Color
;
import
java
.
awt
.
event
.
ActionEvent
;
import
java
.
awt
.
event
.
ActionListener
;
import
javax
.
swing
.
JButton
;
import
javax
.
swing
.
JFrame
;
import
javax
.
swing
.
JColorChooser
;
import
javax
.
swing
.
JPanel
;
public
class
ShowColors2JFrame
extends
JFrame
{
private
final
JButton
changeColorJButton
;
private
Color
color
=
Color
.
LIGHT_GRAY
;
private
final
JPanel
colorJPanel
;
// set up GUI
public
ShowColors2JFrame
()
{
super
(
"Using JColorChooser"
);
// create JPanel for display color
colorJPanel
=
new
JPanel
();
colorJPanel
.
setBackground
(
color
);
// set up changeColorJButton and register its event handler
changeColorJButton
=
new
JButton
(
"Change Color"
);
changeColorJButton
.
addActionListener
(
new
ActionListener
()
// anonymous inner class
{
// display JColorChooser when user clicks button
@
Override
public
void
actionPerformed
(
ActionEvent
event
)
{
color
=
JColorChooser
.
showDialog
(
ShowColors2JFrame
.
this
,
"Choose a color"
,
color
);
// set default color, if no color is returned
if
(
color
==
null
)
color
=
Color
.
LIGHT_GRAY
;
// change content pane's background color
colorJPanel
.
setBackground
(
color
);
}
}
// end anonymous inner class
);
// end call to addActionListener
add
(
colorJPanel
,
BorderLayout
.
CENTER
);
add
(
changeColorJButton
,
BorderLayout
.
SOUTH
);
setSize
(
400
,
130
);
setVisible
(
true
);
}
// end ShowColor2JFrame constructor
}
// end class ShowColors2JFrame
/**************************************************************************
* (C) Copyright 1992-2018 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. *
*************************************************************************/
INSY 4306 Lab 1
Question 1
Write a program that inputs
(use JOptionPane.showInputDialog method
) four numbers and graphs them as a pie chart. Use class Arc2D.Double and method fill of class Graphics2D to perform the drawing. Draw each piece of the pie in a separate color.
Question 2
Given program (Lab_1_2_start_Up) is an application that allows the user to select a shape from a JComboBox and draws it 20 times with random locations and dimensions in method paintComponent. The first item in the JComboBox should be the default shape that is displayed the first time paintComponent is called. (Screenshot 1 & 2)
Screenshot 1
Screenshot 2
Modify the program with following upgrades:
· allow the user to select from four options using JComboBox as seen in Screenshot 3
· allow the user to select the color in which shapes should be drawn from a JColorChooser dialog as seen in Screenshot 4, 5, and 6
· allow the user to close the application by clicking on exit button as seen in Screenshot 7 and 8
Screenshot 3
Screenshot 4
Screenshot 5
Screenshot 6
Screenshot 7
Screenshot 8
Deliverables:
1. Source codes (.java files) – Q1 – 30%, Q2 – 50%
2. Screenshots of the program output – Q1 – 10%, Q2 – 10%
Note: Sparingly comment your java source code, save all the files in your_lastname_lab_1 folder, zip it, and upload for grading. Thank you!
Note:
·
if the program runs without any error and correct output. 100%
·
if the program runs without any error and incorrect output. 90%
·
if the program crashes due to error: up to 40% if the algorithm is ok
end
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