JAVA

I am using jGRASP editor, please highlight or bold changes. below are the attachment

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

// Equation.java Authors: Lewis/Loftus

//

// Solution to Programming Project 10.9

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

public class Equation

{

private int a, b, c;

public final String SQUARED = "\u00B2";

//------------------------------------------------------------------

// Sets up the default coeficients of this equation:

// a*x^2 + b*x + c

//------------------------------------------------------------------

public Equation()

{

a = b = c = 0;

}

//------------------------------------------------------------------

// Sets up the coeficients of this equation as specified.

//------------------------------------------------------------------

public Equation (int aValue, int bValue, int cValue)

{

a = aValue;

b = bValue;

c = cValue;

}

//------------------------------------------------------------------

// Computes the current value of this equation.

//------------------------------------------------------------------

public double computeValue(double x)

{

return a*x*x + b*x + c;

}

//------------------------------------------------------------------

// Returns a string representation of this equation.

//------------------------------------------------------------------

public String toString()

{

StringBuffer equation = new StringBuffer();

if (a==0 && b==0 && c==0)

equation.append("0");

else

{

if (a != 0)

{

if (a==-1)

equation.append("-");

else

if (a!=1)

equation.append(a);

equation.append( "x" + SQUARED);

}

if (b != 0)

{

if (b

{

if (a==0)

equation.append("-");

else

equation.append(" - ");

b = -b;

}

else

equation.append(" + ");

if (b!=1 && b!= -1)

equation.append(b);

equation.append("x");

}

if (c != 0)

{

if (c

{

if (a!=0 || b!=0)

equation.append(" - ");

else

equation.append("-");

c = c;

}

else

equation.append(" + ");

equation.append(c);

}

}

// erase leading +

if (equation.length() > 2)

{

char ch = equation.charAt(1);

if (ch=='+')

{

equation.deleteCharAt(0);

equation.deleteCharAt(0);

}

}

return equation.toString();

}

}

==============================================================================================

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

// EquationGraph.java Author: Lewis/Loftus

//

// Solution to Programming Project 10.9

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

import javax.swing.*;

public class EquationGraph

{

//-----------------------------------------------------------------

// Creates and presents the program frame.

//-----------------------------------------------------------------

public static void main(String[] args)

{

JFrame frame = new JFrame("Equation Graph");

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.getContentPane().add(new EquationGraphPanel());

frame.pack();

frame.setVisible(true);

}

}

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

// EquationGraphPanel.java Authors: Lewis/Loftus

//

// Solution to Programming Project 10.9

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

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.event.*;

import javax.swing.border.LineBorder;

public class EquationGraphPanel extends JPanel

{

private JSlider aSlider;

private JSlider bSlider;

private JSlider cSlider;

private EquationViewportPanel display;

private JLabel equationLabel;

private final String EQUATION_SUBSTRING = "Graph of equation y = ";

private final int MIN_VALUE = -5;

private final int MAX_VALUE = 5;

private final int INIT_VALUE = 0;

private final int TICK_SPACING = 5;

private final int MINOR_TICK_SPACING = 1;

//-----------------------------------------------------------------

// Sets up the panel.

//-----------------------------------------------------------------

public EquationGraphPanel()

{

setLayout(new BorderLayout());

add(getSliderPanel(), BorderLayout.WEST);

display = new EquationViewportPanel();

add(display, BorderLayout.CENTER);

equationLabel = new JLabel(EQUATION_SUBSTRING + 0);

equationLabel.setHorizontalAlignment(SwingConstants.CENTER);

equationLabel.setFont(new Font("Dialog", Font.BOLD, 16));

add(equationLabel, BorderLayout.NORTH);

}

//-----------------------------------------------------------------

// Creates the sliders and slider panel.

//-------------------------------------------------------------

private JPanel getSliderPanel()

{

SliderMouseListener changed = new SliderMouseListener();

aSlider = new JSlider(JSlider.HORIZONTAL, MIN_VALUE, MAX_VALUE, INIT_VALUE);

aSlider.setPaintTicks(true);

aSlider.setPaintLabels(true);

aSlider.setMajorTickSpacing(TICK_SPACING);

aSlider.setMinorTickSpacing(MINOR_TICK_SPACING);

aSlider.setSnapToTicks(true);

aSlider.addMouseListener(changed);

bSlider = new JSlider(JSlider.HORIZONTAL, MIN_VALUE, MAX_VALUE, INIT_VALUE);

bSlider.setPaintTicks(true);

bSlider.setPaintLabels(true);

bSlider.setMajorTickSpacing(TICK_SPACING);

bSlider.setMinorTickSpacing(MINOR_TICK_SPACING);

bSlider.setSnapToTicks(true);

bSlider.addMouseListener(changed);

cSlider = new JSlider(JSlider.HORIZONTAL, MIN_VALUE, MAX_VALUE, INIT_VALUE);

cSlider.setPaintTicks(true);

cSlider.setPaintLabels(true);

cSlider.setMajorTickSpacing(TICK_SPACING);

cSlider.setMinorTickSpacing(MINOR_TICK_SPACING);

cSlider.setSnapToTicks(true);

cSlider.addMouseListener(changed);

JPanel aPanel = new JPanel();

aPanel.setLayout(new BoxLayout(aPanel, BoxLayout.Y_AXIS));

aPanel.setBorder(new LineBorder(Color.black));

aPanel.add(new JLabel("value of 'a'"));

aPanel.add(aSlider);

JPanel bPanel = new JPanel();

bPanel.setLayout(new BoxLayout(bPanel, BoxLayout.Y_AXIS));

bPanel.setBorder(new LineBorder(Color.black));

bPanel.add(new JLabel("value of 'b'"));

bPanel.add(bSlider);

JPanel cPanel = new JPanel();

cPanel.setLayout(new BoxLayout(cPanel, BoxLayout.Y_AXIS));

cPanel.setBorder(new LineBorder(Color.black));

cPanel.add(new JLabel("value of 'c'"));

cPanel.add(cSlider);

JPanel sliderPanel = new JPanel();

sliderPanel.setLayout(new BoxLayout(sliderPanel, BoxLayout.Y_AXIS));

JLabel title = new JLabel("ax\u00B2 + bx + c");

title.setFont(new Font("Dialog", Font.BOLD, 16));

title.setHorizontalAlignment(SwingConstants.CENTER);

sliderPanel.add(title);

sliderPanel.add(new JLabel("Select values for each coefficient:"));

sliderPanel.add(Box.createVerticalGlue());

sliderPanel.add(aPanel);

sliderPanel.add(Box.createVerticalGlue());

sliderPanel.add(bPanel);

sliderPanel.add(Box.createVerticalGlue());

sliderPanel.add(cPanel);

return sliderPanel;

}

//-----------------------------------------------------------------

// Update and equation label.

//-------------------------------------------------------------

private void updateEquationLabel (Equation equation)

{

equationLabel.setText (EQUATION_SUBSTRING + equation.toString());

}

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

// Represents the mouse listener class for the sliders.

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

private class SliderMouseListener extends MouseAdapter

{

//-----------------------------------------------------------------

// Redraws the graph.

//-----------------------------------------------------------------

public void mouseReleased(MouseEvent event)

{

Equation equation = new Equation(aSlider.getValue(),

bSlider.getValue(), cSlider.getValue());

display.setEquation(equation);

updateEquationLabel(equation);

repaint();

}

}

}

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

// EquationViewportPanel.java Authors: Lewis/Loftus

//

// Solution to Programming Project 10.9

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

import java.awt.*;

import javax.swing.JPanel;

import javax.swing.border.LineBorder;

public class EquationViewportPanel extends JPanel

{

private final int X_MIN = -10, Y_MIN = -10, X_MAX = 10, Y_MAX = 10;

private final int REAL_WORLD_WIDTH = X_MAX - X_MIN;

private final int REAL_WORLD_HEIGHT = Y_MAX - Y_MIN;

private final double TICK_LENGTH = 0.2;

private Equation equation;

//-----------------------------------------------------------------

// Constructor: Sets up this panel.

//-----------------------------------------------------------------

public EquationViewportPanel()

{

equation = new Equation();

setBorder(new LineBorder(Color.black, 4));

setPreferredSize(new Dimension(500, 500));

}

//-----------------------------------------------------------------

// Sets the equation.

//-----------------------------------------------------------------

void setEquation(Equation newEquation)

{

equation = newEquation;

}

//-----------------------------------------------------------------

// Converts world X coordinate to screen X coordinate.

//-----------------------------------------------------------------

private int convertX(double x)

{

double offset = x - X_MIN;

double result = offset * getSize().width / REAL_WORLD_WIDTH;

return (int) Math.round(result);

}

//-----------------------------------------------------------------

// Converts world Y coordinate to screen Y coordinate.

//-----------------------------------------------------------------

private int convertY(double y)

{

double offset = Y_MAX - y;

double result = offset * getSize().height / REAL_WORLD_HEIGHT;

return (int) Math.round(result);

}

//-----------------------------------------------------------------

// Draws a line in world coordinates on the screen.

//-----------------------------------------------------------------

private void drawScreenLine(Graphics page, double xMin, double yMin,

double xMax, double yMax)

{

page.drawLine(convertX(xMin), convertY(yMin), convertX(xMax), convertY(yMax));

}

//-----------------------------------------------------------------

// Draws a point in world coordinates on the screen.

//-----------------------------------------------------------------

private void drawScreenPoint(Graphics page, double x, double y)

{

page.drawLine(convertX(x), convertY(y), convertX(x), convertY(y));

}

//-----------------------------------------------------------------

// Draws the graph axes and equation.

//-----------------------------------------------------------------

public void paintComponent(Graphics page)

{

page.setColor(Color.white);

page.fillRect(0,0,getSize().width, getSize().height);

// draw the x and y axis

page.setColor(Color.pink);

drawScreenLine(page, X_MIN, 0, X_MAX, 0);

drawScreenLine(page, 0, Y_MIN, 0, Y_MAX);

// draw tick marks

for (int x=X_MIN; x

drawScreenLine(page, x, -TICK_LENGTH, x, TICK_LENGTH);

for (int y=Y_MIN; y

drawScreenLine(page, -TICK_LENGTH, y, TICK_LENGTH, y);

// draw the graph of the equation

page.setColor(Color.black);

double x = X_MIN;

double y;

double stepSize = (double)(X_MAX - X_MIN) / getSize().width;

int screenX = getSize().width;

for (int i = 0; i

{

y = equation.computeValue(x);

drawScreenPoint(page, x, y);

x += stepSize;

}

}

}

1. Study the attached solution to PP. 10.9 on p. 535 of your text. PP 10_9.zip 2. Create an application that draws the graph of the equation y-mx. This is the graph of a straight line where m is the slope of the line. Allow m to be set to values between -5 and +5 using a horizontal slider. 3. Next create two sliders, one that is horizontal and will move a horizontal line up and down and one that is vertical and will move a vertical line left and right, The resulting output should look Ike this: Note: only 50 % credit will be given for work that is turned in after the 1. Study the attached solution to PP. 10.9 on p. 535 of your text. PP 10_9.zip 2. Create an application that draws the graph of the equation y-mx. This is the graph of a straight line where m is the slope of the line. Allow m to be set to values between -5 and +5 using a horizontal slider. 3. Next create two sliders, one that is horizontal and will move a horizontal line up and down and one that is vertical and will move a vertical line left and right, The resulting output should look Ike this: Note: only 50 % credit will be given for work that is turned in after the