Curve XY 2D

This is a netBeans project using Java.This is Program Draw a 2D curve.It include Y aixs for the Temperature and X aixs for Time.Temperature is any array created Randomly.The size of this array is 100 int[].The Time is 0-100.The User Can Determine the Max Temperature with Range 200-0. I am using the Random Class to fill the Temperature array.

The GUI contain textfiled to determine the Max Temperature and JButton to fill the Temperature array with a new Random integers numbers .


The Project Contain two classes.

myFrame.java
myPanel.java

The myFrame.java
java code

/*
 * myFrame.java
 */

package xycurve;

import javax.swing.JFrame;

/**
 *

 */
public class myFrame extends JFrame{
    
    /** Creates a new instance of myFrame */
    public myFrame() {
        
        getContentPane().add(cpanel);
        setTitle("XY-Curve");
        setSize(300,350);
        setLocation(200,200);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible(true);
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        new myFrame();
        // TODO code application logic here
    }
    myPanel cpanel=new myPanel();
}

The myPanel.java
java code

/*
 * myPanel.java
 */

package xycurve;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

/**
 *

 */
public class myPanel extends JPanel{
    
    /** Creates a new instance of myPanel */
    
    private JButton randButton=new JButton("Generate");
    private JTextField myText=new JTextField(3);
    private JLabel myLabel=new JLabel("Max  Temperature ");
    private Random myrand=new Random();
    private int Max_temperature;
    private int Min_temperature;
    private int[] temparray=new int[200];
    private int oldx;
    private int oldy;
    public myPanel() {
        
        randButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                Max_temperature=Integer.parseInt(myText.getText());
                if(Max_temperature>200||Max_temperature200||Max_temperature<=0) {
            Max_temperature=200;
            myText.setText("200");
        }
        
        for(int i=0;i<100;i++) {
            temparray[i]=myrand.nextInt(Max_temperature);
        }
        add(myLabel);
        add(myText);
        add(randButton);
    }
    
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        
        g.drawLine(10,300,10,200);
        g.drawLine(10,300,110,300);
        g.setColor(Color.BLUE);
    
        for(int i=0;i<100;i++) {
            g.drawLine(20+i-1,300-oldy,20+i,300-temparray[i]);
            oldy=temparray[i];
            
        }
        g.setColor(Color.RED);
        g.drawString("Temperature(0 -"+Integer.toString(Max_temperature)+")",10,100);
        g.drawString("Time (0-100)",120,300);
    }
    
}

hello
thanks i think that this program help me for a while. But i need that time and temperature wouldn't be a random, and later i have to add new values of temp and time. temp max i have to find from array of temp, and temp min too.

so can you help me?

Makaule wrote:hello
thanks i think that this program help me for a while. But i need that time and temperature wouldn't be a random, and later i have to add new values of temp and time. temp max i have to find from array of temp, and temp min too.

so can you help me?

So u want to enter the temp by ur self , I have a qestion ? What is the size of the temp array u want it to be [100] or ??
And then you search in it for the min and max ! right ?

msi_333 wrote:

Makaule wrote:hello
thanks i think that this program help me for a while. But i need that time and temperature wouldn't be a random, and later i have to add new values of temp and time. temp max i have to find from array of temp, and temp min too.

so can you help me?

So u want to enter the temp by ur self , I have a qestion ? What is the size of the temp array u want it to be [100] or ??
And then you search in it for the min and max ! right ?

an example i have double[] temparray = {7, 10, 25, 50, 30} and double[] timearray = {8.15, 8.45, 9.15, 9.45, 10.15}

using these values i have to draw a curve. later i will have to add other values in these two arrays but not from GUI side(if you understand that), like this add(newTemp, new java.util.Date()); i don't know that these are correct.

Here it is , I made it on your example , and i also add Point Circles on the Curve to determine the Postions of the Given Temp points ,

I hope that i make somthing useful ,



I made changes only in this class , (myPanel.java)

Code:



package xycurve;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

/**
*
* @author mohamed
*/
public class myPanel extends JPanel{
   
    /** Creates a new instance of myPanel */
   
    private JButton randButton=new JButton("Draw");
    private JTextField myText=new JTextField(3);
    private JLabel myLabel=new JLabel("Max  Temperature ");
    private int[] temparray=new int[]{7,10,25,50,30};
    private float[] timearray=new float[] {8.15f, 8.45f, 9.15f, 9.45f, 10.15f};
    private int oldy;
    public myPanel() {
       
        randButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {

repaint();
            }
        });

add(randButton);
    }
   
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);
       
        g.drawLine(10,300,10,200);
        g.drawLine(10,300,110,300);
        g.setColor(Color.BLUE);
        oldy=0;
        for(int i=0;i<timearray.length*20;i+=20) {
            g.drawLine(30+i-20,300-oldy,30+i,300-temparray[i/20]);
            oldy=temparray[i/20];
            g.setColor(Color.RED.brighter());
            g.drawOval(30+i-2,300-temparray[i/20]-2,4,4);
            g.setColor(Color.BLUE);
           
        }
        g.setColor(Color.RED);
        g.drawString("Temperature",10,100);
        g.drawString("Time  ",120,300);
    }
   
}

by the way which file i have to run?

Z:\xycurve\build\classes\xycurve>java myPanel
Exception in thread "main" java.lang.NoClassDefFoundError: myPanel (wrong name:
xycurve/myPanel)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)

Z:\xycurve\build\classes\xycurve>java myFrame
Exception in thread "main" java.lang.NoClassDefFoundError: myFrame (wrong name:
xycurve/myFrame)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)

then i want to compile myFrame.java look at this

Z:\xycurve\src\xycurve>javac myFrame.java
myFrame.java:38: cannot find symbol
symbol : class myPanel
location: class xycurve.myFrame
myPanel cpanel=new myPanel();
^
myFrame.java:38: cannot find symbol
symbol : class myPanel
location: class xycurve.myFrame
myPanel cpanel=new myPanel();
^
2 errors

if I change

Code:

private int[] temparray=new int[]{7,10,25,50,30};

to

Code:

private double[] temparray=new double[]{7,10,25,50,30};

it will be correct?

You have in java to to put the letter "d" for double and "f" for float so it will be :

Code:

private double[] temparray=new double[]{7.0d,10.0d,25.0d,50.0d,30.0d};

msi_333 wrote:

Makaule wrote:if I change

Code:

private int[] temparray=new int[]{7,10,25,50,30};

to

Code:

private double[] temparray=new double[]{7,10,25,50,30};

it will be correct?

You have in java to to put the letter "d" for double and "f" for float so it will be :

Code:

private double[] temparray=new double[]{7.0d,10.0d,25.0d,50.0d,30.0d};

thanks for this