Taking values from a text file inside paintcomponent

[crochunter]

Hi,

I want to read values from a text files from specified fields and use them as values to fill my methods inside the paintComponent() method. I am using for loop to do that but not able to do it properly. Can somebody give me a good example code howto do it ??
Here is extract of my code below:-

public class testing extends JPanel{
    private ArrayList<Myclass> lines;
    private HashMap<String,Color>  hm = new HashMap<String,Color>();
    private int firstvalue;
    private int width;
    private String color;
    private int f[];
 
 
   public void drawrects() {
         String n = null;  
    try{
            BufferedReader fh = new BufferedReader(new FileReader("myinput.txt"));    
            while(true){
               n = fh.readLine();
               if(n == null){
                  break;
               }else{
                  String f[] = n.split("\t");
                        int firstvalue = Integer.parseInt(f[3]);
                        int width = Integer.parseInt(f[4]); 
                        Color color = (Color)hm.get(f[7]);
                        Myclass lineinformation = new Myclass(color);
                        Myclass lineinformation = new Myclass(color);
                        lines.add(lineinformation);
 
   }       
          }
          fh.close();
       } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e2) {
            e2.printStackTrace();
         }  
     } 
 public void paintComponent(Graphics g) {
    super.paintComponent(g);
    Graphics2D g2d = (Graphics2D) g;
     g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING,  
              RenderingHints.VALUE_ANTIALIAS_ON);  
    Myclass myobject = new Myclass();
    int x = myobject.firstvalue;
    int y = 60;
    int w = myobject.width;
    int z = 27;
    g2d.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    for(int i=0; i<Myclass.f.length; i++){
    GradientPaint gpi = new GradientPaint(0, 0, lines.get(i).getColor(), 0, 20, Color.white, true);
    g2d.drawRect(x, 60, w, 27);
    g2d.setColor(gpi);
    g2d.fillRect(x, 60, w, 27);
 
                                      }
 }
 

Thanks

[r035198x]

What specific problems are you having with your code?

[crochunter]

Hi... Actually I donno howto make my for loop work in this case. I am taking values from the text file. Can you give some clues.

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.BufferedReader;
import java.awt.*;
import javax.swing.*;
import java.awt.Color;
import javax.swing.JFrame;
import java.util.ArrayList;
import java.io.BufferedReader;
import java.util.HashMap;
import  java.awt.geom.Rectangle2D;
import java.awt.Rectangle;
 
/**
 *
 * @author crochunter
 */
public class testing extends JPanel {
  private ArrayList<Integer> heights;
  private ArrayList<testing> widths; 
  private int first;
  private int width;
   public int heights() {
         String n = null;  
    try{
            BufferedReader fh = new BufferedReader(new FileReader("input.txt"));    
            while(true){
               n = fh.readLine();
               if(n == null){
                  break;
               }else{
                  String f[] = n.split("\t");
                        int first = Integer.parseInt(f[3]);
                        int second = Integer.parseInt(f[4]);
                       // String color = f[7];
                        Integer iscn = (int) first;
                        int width = second - first;
                        heights = new ArrayList(Arrays.asList(f[3]));
                    for (int i =0; i < heights.size();i++){
                    System.out.println(heights); 
                        heights.get(i);
                                      }
 
   }   
 
          }
 
          fh.close();
       } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e2) {
            e2.printStackTrace();
         }  
       return first;
     } 
 public int widths() {
         String n = null;  
    try{
            BufferedReader fh = new BufferedReader(new FileReader("input.txt"));    
            while(true){
               n = fh.readLine();
               if(n == null){
                  break;
               }else{
                  String f[] = n.split("\t");
                        int first = Integer.parseInt(f[3]);
                        int second = Integer.parseInt(f[4]);
 
                        int width = second - first;
                        widths = new ArrayList(Arrays.asList(width));
                for (int i =0; i < widths.size();i++){
                    System.out.println(widths);
 
                   }
   }   
 
          }
 
          fh.close();
       } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e2) {
            e2.printStackTrace();
         } 
         return width;
     } 
 
 
   public void paintComponent(Graphics g){
       super.paintComponent(g);
    Graphics2D g2d = (Graphics2D) g;
               testing wow = new testing();
        // for(int i=0; i<heights.size();i++) { // I want my for loop to take values from my file one by one which is not working
           int x = wow.heights();
           int y = wow.widths();
 
           g2d.setColor(Color.BLUE); 
           g2d.drawRect(x,60,y,27);
 
}
   public static void main(String args[]){
 
    JFrame frame = new JFrame();
    frame.setTitle("My First Program");
    frame.setSize(1000, 200);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = frame.getContentPane();
    contentPane.add(new testing());
    frame.show();
  }
 
   }
 

Thanks

[JosAH]

Do you have another handle 'cowboyrocks2009'?

kind regards,

Jos

[crochunter]

No why ? I was curious to know how for loop will work in this case.

Thanks