Dispalying random dates

[shalini gnana]

I want to display the dates between from date to todate...i.e.,if the from date is:2007/01/01 and todate is: 2007/03/01..I want the intermediate date 2007/02/01...I tried to display the dates...But Its not giving me the required(dates between from date and to date)....Its giving some random numbers..

    
package examples;
 
import java.awt.event.MouseListener;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.text.DateFormat;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import javax.swing.*;
import java.awt.*;
import java.awt.BorderLayout;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.BorderFactory; 
import javax.swing.border.Border; 
 
public class sample extends JApplet 
{        
    String s= "aswedfrtyhgqwsadrftlopqasnhfgrchildnode1";    
    int width = s.length();    
    int border = 2;    int margin = 10;    
    int rectx = margin+border,recty =margin+border+63;    
    int rectwidth = 8, rectheight = 6;    
    int imgborder = 10;    
    int imgline1 = 300;   
    int labellocx = rectx+imgborder+13;   
    int labellocy = recty+imgborder-1;    
    int circlex = rectx+rectwidth; 
    int circley = recty+rectheight;   
    int x =rectx+rectwidth+10;   
    int y = recty+rectheight+10; 
    int x1 = x+17;  
    int y1 = y+20;   
    int titlebarx= 300;
    int titlebary = 40;   
    boolean title = true; 
    String date[] = {"0","4","8","12","16","20","24"};  
    String day[] = {"Mon","Tue","Wed","Thu","Fri","Sat"};
    int width1 = 180;
    int n =180;
    long From ;
    long To ;
    ArrayList dateList;
 
    public void init()      
    {               
        Container cont = getContentPane();    
        cont.setLayout(new BorderLayout());
        setPreferredSize(new Dimension(300, 300));              
        JScrollPane scroll = new JScrollPane();               
        getContentPane().add(scroll, BorderLayout.CENTER);         
        scroll.getViewport().add(new Imagepanel());        
    }      
   
private class Imagepanel extends JPanel implements MouseListener  
            
    {              
                    
        JScrollPane scroll = new JScrollPane();       
        Rectangle rect = new Rectangle(rectx,recty,rectwidth,rectheight);        
        Ellipse2D.Double circle = new Ellipse2D.Double(x,y,4,4);    
        Ellipse2D.Double circle1 = new Ellipse2D.Double(x+10,y+10,4,4);     
        boolean selected = false;   
        boolean selected1 = false;      
        int w ;      
    Imagepanel()        
    {               
         setPreferredSize(new Dimension(32710,32710));       
        scroll = new JScrollPane();      
        add(scroll);                  
        addMouseListener(this);        
        
        setBorder(BorderFactory.createLineBorder(Color.BLACK, border));           
    }             
    protected void paintComponent(Graphics g)          
    {   
        int n = 168;
        int x = 300;
        int x1=300;
        int x2=x;
        int daydx=(width1/2);
        int dayx =(daydx+x);
        int f2= x+n;
        
        [B]From = new java.util.GregorianCalendar(2007,01,01).getTime().getTime();
        To = new java.util.GregorianCalendar(2007,06,30).getTime().getTime();
        double Difference = To-From;
        long days = Math.round((Difference/(1000606024)));
        int noday = (int)days;
        
        Date fromDate = new java.util.GregorianCalendar(2007,01,01).getTime();
        Date toDate = new java.util.GregorianCalendar(2007,06,30).getTime();[/B]        
        Date datecounter =fromDate;
        
        super.paintComponent(g);
             
        Graphics2D g2 = (Graphics2D) g;
              
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON);
        
        
        Font font = new Font("Ariel",Font.PLAIN,11);
  
        Font font1 = new Font("Ariel",Font.PLAIN,9);
        
        g2.setBackground(Color.GRAY);
        
        //drawing the tilte bar
      
        g2.setBackground(Color.WHITE);
   
        g2.drawLine(imgline1,0,imgline1,getHeight());
  
        g2.setPaint(new Color(0,128,192));
        g2.fillRect(imgborder,imgborder,290,45);
                
        g2.draw(rect);
 
        g2.setPaint(Color.WHITE);
        g2.drawLine(margin,margin,titlebarx,titlebary);
  
        g2.drawString("RESOURCE",40,40);
        
        g2.drawString("TIME",200,25);
        
        
        rect.setLocation(rectx,recty);
       
        rect.setSize(rectwidth,rectheight);
 
        g2.setPaint(Color.BLACK);
        g2.drawString(" aswedfrtyhgqwsadrftlopqasnhfgrchildnode1",rectx+rectwidth+05,recty+rectheight);
                
        
        
        for (int i = 0;i<noday;i++)
        {
   
[B]            Calendar  c = Calendar.getInstance(); // current date
            c.setTime(datecounter);
            int nextdate = c.get(Calendar.DATE)+i;
            c.set(Calendar.DATE,nextdate);
            datecounter = c.getTime();
 
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy/mm/dd"); // use the pattern: day_of_month
            String str = sdf.format(c.getTime()); // fromat the date to string      [/B]      
for (int j=0;j<6;j++)
            {   
                g2.setFont(font1);
                g2.drawLine(x1,40,x1,35);
                g2.drawString(date[j],x1,35);
                
 
                g2.drawString("24",f2,35);
                
                f2+=width1;
                x1+=30;
                
 
            }
            g2.drawRect(x,10,width1,30);
            x+=width1;
            g2.drawString(str,dayx,20);
            dayx+=180;
        }
        
 
 
        
        
      
        //dividing the drawing panel       
        //drawing for the click event        
        if(selected)        
        {                 
            Color color = Color.orange;  
            g2.fill(circle);
            g2.draw(circle);           
            //              g2.drawRoundRect(x+30,y+15,200,12,5,5);         
            g2.drawString("aswedfrtyhgqwsadrftlopqasnhfgrchildnode1",x+15,y+5);      
            g2.drawRect(300,y,100,15);       
        }       
        if(selected1)       
       {           
            g2.setFont(new Font("Arial",Font.PLAIN,12));  
            g2.fill(circle1);
            g2.draw(circle1);            
            g2.drawString(" aswedfrtyhgqwsadrftlopqmasnhfgrchildnode1",x1+15,y1+5);   
        }                                 
}  
    
    
 
 
    public void update(Graphics g)     
    {         
        paint(g);    
    }    
    public void mouseClicked(MouseEvent e)           
    {                       
        //imagePaneMouseClicked(e);               
    }                   
    private void imagePaneMouseClicked(MouseEvent e)         
    {                    
        Point p = e.getPoint();          
        if (rect.contains(p))                   
        {                        
            if (!selected)               
            {                            
                selected = true;         
                repaint();                
            }                    
        }        
        if(circle.contains(p))      
        {     
            if(!selected1)            
            {                
                selected1 = true;     
                repaint();            
            }      
         }        
        if(rect.contains(p))  
        {       
            if(e.getClickCount() == 2)     
            {           
                selected = false;   
                repaint();       
            }       
        }        
    }              
    public void mousePressed(MouseEvent e)         
    {            
    imagePaneMouseClicked(e);             
    }                
    public void mouseReleased(MouseEvent e) {        }                
    public void mouseEntered(MouseEvent e) {        }           
    public void mouseExited(MouseEvent e) {        }        
}
}
 
 
 

Please help me...

[ November 23, 2007: Message edited by: shalini gnana ]
[ November 23, 2007: Message edited by: shalini gnana ]

[Rob Spoor]

Date startDate;
Date endDate;
 

long start = start.getTime();
long end = end.getTime();
long diff = end - start;
Random random = new Random();
long rand = random.nextLong();
rand = (rand % diff) + start;
Date randomDate = new Date(rand);

Just quickly written.

[shalini gnana]

My question is not that...

I want to display the dates between from date to todate...i.e.,if the from date is:2007/01/01 and todate is: 2007/03/01..I want the intermediate date 2007/02/01...

[Oggi Olli]

Now, I don't know the general practice here at JavaRanch, but why don't you just post the relevant code and the relevant code only?

Anyway, say from date is 2007/01/01 and to date is 2007/01/15. Do you want the intermediate date to be 2007/01/07 or 2007/01/08?

[shalini gnana]

Yes,exactly...

[Rob Spoor]

It's not that different from my earlier code:

Date startDate;
Date endDate;
 
 
long start = start.getTime();
long end = end.getTime();
long between = (start + end) / 2; // exactly in between, rounded down
Date betweenDate = new Date(rand);

[shalini gnana]

Rob,I don't want the date difference or the random date difference...
I want exactly the dates between the start date and the end date....
say, from date is 2007/01/01 and to date is 2007/01/05. I want the intermediate dates, 2007/01/02,2007/01/03,2007/01/04

Can you help me?

[Rob Spoor]

Ah, now I get it. You don't just want the middle date, but all dates in between.

Calendar start;
Calendar end;
// assumption: start comes before end
 
int endYear = end.get(Calendar.YEAR);
int endDay = end.get(Calendar.DAY_OF_YEAR);
 
// the calendar to use as iterator
Calendar iterator = (Calendar)start.clone();
int year = iterator.get(Calendar.YEAR);
int day = iterator.get(Calendar.DAY_OF_YEAR);
while (year < endYear || (year == endYear && day < endDay))
{
    iterator.add(Calendar.DAY_OF_YEAR, 1);
    // now iterator represents an extra day
    // use iterator.getTime() to get a Date object
    year = iterator.get(Calendar.YEAR);
    day = iterator.get(Calendar.DAY_OF_YEAR);
}
// year == endYear && day == endDay, so we've reached the end date

When calculating with dates, always use Calendar instead of Date, since Calendar takes daylight savings time etc into account. If needed, use the add or roll methods, as these also handle new months and years as needed.


Also, "mm" in a date format is the number of minutes. You need "MM" for the month. For performance reasons you will want to declare and initialize that SimpleDateFormat before the loop, not inside.
[ November 23, 2007: Message edited by: Rob Prime ]

[shalini gnana]

Thanks alot for your help..Now,I could able to display..