Question

This is for all Java programers I have a challenge for you, I have created such a program that when you enter the equation of a circle its draws the circle now the challenge for you is to create a same program with Straight Line equation

Answer 1

Here is the code:-

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
class Circles extends JComponent implements ActionListener
{
JTextField t1=new JTextField(2);
JTextField t2=new JTextField(2);
JTextField t3=new JTextField(3);
JTextField t4=new JTextField(3);
JTextField t5=new JTextField(4);
JFrame f=new JFrame("Co-ordiante");
double tanX=0,tanY=0;
protected static int startX=0,startY=0,radius=0;
protected static int Xco[]=new int[100];
protected static int Yco[]=new int[100];
protected static int rad[]=new int[100];
protected static int increment=0;
protected static boolean b=false;
public void paint(Graphics g)
{
Graphics2D g2d=(Graphics2D)g.create();
g2d.setPaint(Color.darkGray);
for(int i=getWidth()/2;i>=0;i=i-10)
{
g2d.drawLine(i,0,i,getHeight());
}
for(int i=getWidth()/2;i<=getWidth();i=i+10)
{
g2d.drawLine(i,0,i,getHeight());
}
for(int i=getHeight()/2;i>=0;i=i-10)
{
g2d.drawLine(0,i,getWidth(),i);
}
for(int i=getHeight()/2;i<=getWidth();i=i+10)
{
g2d.drawLine(0,i,getWidth(),i);
}
g2d.setStroke(new BasicStroke(2));
g2d.drawLine(getWidth()/2,0,getWidth()/2,getHeight());
g2d.drawLine(0,getHeight()/2,getWidth(),getHeight()/2);
g2d.setStroke(new BasicStroke(2));
if(b==true)
{
for(int i=0;i<increment;i++)
{g2d.drawOval(getWidth()/2+Xco[i],getHeight()/2-Yco[i],rad[i]*2,rad[i]*2);}
}
}
public static void main(String args[])
{
JFrame accept=new JFrame("Data");
accept.setSize(400,100);
Circles c=new Circles();
JPanel p=c.setParameters();
accept.add(p);
accept.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
accept.setResizable(false);
accept.setLocationRelativeTo(null);
accept.setVisible(true);
}
public JPanel setParameters()
{
JPanel p=new JPanel();
JLabel l1=new JLabel("x^2");
JLabel l2=new JLabel("y^2");
JLabel l3=new JLabel("x");
JLabel l4=new JLabel("y");
p.add(t1);
p.add(l1);
p.add(new JLabel("+"));
p.add(t2);
p.add(l2);
p.add(new JLabel("+"));
p.add(t3);
p.add(l3);
p.add(new JLabel("+"));
p.add(t4);
p.add(l4);
p.add(new JLabel("+"));
p.add(t5);
p.add(new JLabel("=0"));
t5.addActionListener(this);
return p;
}
public void actionPerformed(ActionEvent e)
{
double x2=Double.parseDouble(t1.getText());
double y2=Double.parseDouble(t2.getText());
double g2=Double.parseDouble(t3.getText());
double f2=Double.parseDouble(t4.getText());
double c=Double.parseDouble(t5.getText());
if(x2==y2)
{
if(x2!=1 && y2!=1)
{
g2=g2/x2;
f2=f2/y2;
c=c/x2;
}
double centerX=(-1)*(g2/2);
double centerY=(-1)*(f2/2);
double r=Math.sqrt((centerX*centerX)+(centerY*centerY)-c);
//System.out.println("The circle is {("+centerX+","+centerY+");"+r+"}");
tanX=centerX-r;
tanY=centerY+r;
tanX=tanX*10;
tanY=tanY*10;
r=r*10;
if(tanX>0)
{tanX=Math.ceil(tanX);}
else
{tanX=Math.floor(tanX);}
if(tanY>0)
{tanY=Math.ceil(tanY);}
else
{tanY=Math.floor(tanY);}
if(r>0)
{r=Math.ceil(r);}
else
{r=Math.floor(r);}
startX=(int)tanX;
startY=(int)tanY;
radius=(int)r;
Xco[increment]=startX;
Yco[increment]=startY;
rad[increment]=radius;
increment=increment+1;
b=true;;
f.setVisible(false);
f.add(new Circles());
f.setSize(1280,658);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setResizable(false);
f.setLocationRelativeTo(null);
f.setVisible(true);
}
else
{System.out.println("Equation does not satisfy a circle");}
}
}

Answer 2

no comments :/

Answer 3

challenge accepted

Answer 4

lets see what u do