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hii..i am doin a project called Forecaster..wat it does is
it asks user to enter a zip code..then it establishes
urlconnection with a weather website n fetches data n data
is converted into graphical representation..but it doesnt
show any output..i am not able it figure out the reason..can
u plzzzz help me out..i am givin u code
import java.io.*;
import java.awt.*;
import java.net.*;
import java.awt.image.*;
import java.awt.event.*;
public class Forecast extends Frame
{
OkCancelDialog textDialog;
BufferedImage image = null;
public static void main(String[] args)
{
new Forecast();
}
public Forecast()
{
String zip ="";
File zipFile = new File("zip.txt");
String hiTemperature[] = new String[4];
String loTemperature[] = new String[4];
try {
if(zipFile.exists()){
FileReader filereader = new
FileReader("zip.txt");
BufferedReader bufferedreader = new
BufferedReader(filereader);
zip = bufferedreader.readLine();
}
else
{
textDialog = new OkCancelDialog(this,
"Enter your five-digit zip code", true);
textDialog.setVisible(true);
zip = textDialog.data.trim();
FileOutputStream fileoutputstream = new
FileOutputStream("zip.txt");
fileoutputstream.write(zip.getBytes());
}
int character;
URL url = new URL
("http://www.srh.noaa.gov/zipcity.php?inputstring="
+ zip);
URLConnection urlconnection = url.openConnection();
InputStream in = urlconnection.getInputStream();
String input = "";
String hiSearch;
String loSearch;
String inchar;
char[] cc = new char[1];
while ((character = in.read()) != -1) {
char z = (char)character;
cc[0] = z;
inchar = new String(cc);
input += inchar;
}
in.close();
if(input.indexOf("Hi <font color=\"#FF0000\">")
>= 0){
hiSearch = "Hi <font color=\"#FF0000\">";
}
else{
hiSearch= "Hi: <span class=\"red\">";
}
int currentPosition = 0;
for(int loopIndex = 0; loopIndex < 4; loopIndex++){
int location = input.indexOf(hiSearch,
currentPosition);
int end = input.indexOf("°", location);
hiTemperature[loopIndex] =
input.substring(location +
hiSearch.length(), end);
currentPosition = end + 1;
}
if(input.indexOf("Lo <font color=\"#0033CC\">")
>= 0){
loSearch = "Lo <font color=\"#0033CC\">";
}
else{
loSearch= "Lo: <span class=\"blue\">";
}
currentPosition = 0;
for(int loopIndex = 0; loopIndex < 4; loopIndex++){
int location = input.indexOf(loSearch,
currentPosition);
int end = input.indexOf("°", location);
loTemperature[loopIndex] =
input.substring(location +
loSearch.length(), end);
currentPosition = end + 1;
}
boolean evening = false;
if(input.indexOf(loSearch) <
input.indexOf(hiSearch)){
evening = true;
hiTemperature[3] = hiTemperature[2];
hiTemperature[2] = hiTemperature[1];
hiTemperature[1] = hiTemperature[0];
}
image = new BufferedImage(225, 201,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
g.setColor(Color.white);
g.fillRect(0, 0, 224, 201);
g.setColor(Color.gray);
for(int loopIndex = 0; loopIndex < 21; loopIndex++){
g.drawLine(25, loopIndex * 10, 224,
loopIndex * 10);
g.drawLine(loopIndex * 10 + 25, 0, loopIndex
* 10
+ 25, 199);
}
g.setColor(Color.blue);
Font font = new Font("Courier", Font.PLAIN, 18);
g.setFont(font);
for(int loopIndex = 20; loopIndex < 200;
loopIndex += 20){
g.drawString(String.valueOf(100 - loopIndex
/ 2), 0,
loopIndex + 5);
}
g.setColor(Color.red);
if(!evening){
g.drawOval(65 - 4, 200 - (Integer.parseInt(
hiTemperature[0]) * 2) - 4, 8, 8);
}
g.drawOval(105 - 4, 200 - (Integer.parseInt(
hiTemperature[1]) * 2) - 4, 8, 8);
g.drawOval(145 - 4, 200 - (Integer.parseInt(
hiTemperature[2]) * 2) - 4, 8, 8);
g.drawOval(185 - 4, 200 - (Integer.parseInt(
hiTemperature[3]) * 2) - 4, 8, 8);
if(!evening){
g.drawLine(65, 200 - (Integer.parseInt(
hiTemperature[0]) * 2), 105, 200 -
(Integer.parseInt(hiTemperature[1]) * 2));
}
g.drawLine(105, 200 -
(Integer.parseInt(hiTemperature[1]) *
2), 145, 200 -
(Integer.parseInt(hiTemperature[2]) *
2));
g.drawLine(145, 200 -
(Integer.parseInt(hiTemperature[2]) *
2), 185, 200 -
(Integer.parseInt(hiTemperature[3]) *
2));
g.setColor(Color.blue);
g.drawOval(65 - 4, 200 - (Integer.parseInt(
loTemperature[0]) * 2) - 4, 8, 8);
g.drawOval(105 - 4, 200 - (Integer.parseInt(
loTemperature[1]) * 2) - 4, 8, 8);
g.drawOval(145 - 4, 200 - (Integer.parseInt(
loTemperature[2]) * 2) - 4, 8, 8);
g.drawOval(185 - 4, 200 - (Integer.parseInt(
loTemperature[3]) * 2) - 4, 8, 8);
g.drawLine(65, 200 -
(Integer.parseInt(loTemperature[0]) *
2), 105, 200 -
(Integer.parseInt(loTemperature[1]) *
2));
g.drawLine(105, 200 -
(Integer.parseInt(loTemperature[1]) *
2), 145, 200 -
(Integer.parseInt(loTemperature[2]) *
2));
g.drawLine(145, 200 -
(Integer.parseInt(loTemperature[2]) *
2), 185, 200 -
(Integer.parseInt(loTemperature[3]) *
2));
g.setColor(Color.white);
g.fillRect(55, 160, 140, 30);
g.setColor(Color.blue);
g.drawRect(55, 160, 140, 30);
font = new Font("Courier", Font.PLAIN, 12);
g.setFont(font);
g.drawString("Four-Day Forecast", 65, 172);
font = new Font("Courier", Font.PLAIN, 9);
g.setFont(font);
g.drawString("Source: Nat. Weather Srvce.", 58,
185);
setTitle("The Forecaster");
setResizable(false);
setSize(250, 240);
setVisible(true);
this.addWindowListener(new WindowAdapter(){
public void windowClosing(
WindowEvent e){
System.exit(0);
}
}
);
}
catch (Exception e) {
System.out.println(e.getMessage());
}
}
public void paint(Graphics g)
{
if(image != null){
g.drawImage(image, 10, 30, this);
}
}
}
class OkCancelDialog extends Dialog implements ActionListener
{
Button ok, cancel;
TextField text;
public String data;
OkCancelDialog(Frame hostFrame, String title, boolean
dModal)
{
super(hostFrame, title, dModal);
setSize(280, 100);
setLayout(new FlowLayout());
text = new TextField(30);
add(text);
ok = new Button("OK");
add(ok);
ok.addActionListener((ActionListener)this);
cancel = new Button("Cancel");
add(cancel);
cancel.addActionListener(this);
data = new String("");
}
public void actionPerformed(ActionEvent event)
{
if(event.getSource() == ok){
data = text.getText();
} else {
data = "";
}
setVisible(false);
}
}
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hii..i am doin a project called Forecaster..wat it does is it asks user to enter a zip code..then it establishes urlconnection with a weather website n fetches data n data is converted into graphical representation..but it doesnt show any output..i am not able it figure out the reason..can u plzzzz help me out..i am givin u code import java.io.*; import java.awt.*; import java.net.*; import java.awt.image.*; import java.awt.event.*; public class Forecast extends Frame { OkCancelDialog textDialog; BufferedImage image = null; public static void main(String[] args) { new Forecast(); } public Forecast() { String zip =""; File zipFile = new File("zip.txt"); String hiTemperature[] = new String[4]; String loTemperature[] = new String[4]; try { if(zipFile.exists()){ FileReader filereader = new FileReader("zip.txt"); BufferedReader bufferedreader = new BufferedReader(filereader); zip = bufferedreader.readLine(); } else { textDialog = new OkCancelDialog(this, "Enter your five-digit zip code", true); textDialog.setVisible(true); zip = textDialog.data.trim(); FileOutputStream fileoutputstream = new FileOutputStream("zip.txt"); fileoutputstream.write(zip.getBytes()); } int character; URL url = new URL ("http://www.srh.noaa.gov/zipcity.php?inputstring=" + zip); URLConnection urlconnection = url.openConnection(); InputStream in = urlconnection.getInputStream(); String input = ""; String hiSearch; String loSearch; String inchar; char[] cc = new char[1]; while ((character = in.read()) != -1) { char z = (char)character; cc[0] = z; inchar = new String(cc); input += inchar; } in.close(); if(input.indexOf("Hi <font color=\"#FF0000\">") >= 0){ hiSearch = "Hi <font color=\"#FF0000\">"; } else{ hiSearch= "Hi: <span class=\"red\">"; } int currentPosition = 0; for(int loopIndex = 0; loopIndex < 4; loopIndex++){ int location = input.indexOf(hiSearch, currentPosition); int end = input.indexOf("°", location); hiTemperature[loopIndex] = input.substring(location + hiSearch.length(), end); currentPosition = end + 1; } if(input.indexOf("Lo <font color=\"#0033CC\">") >= 0){ loSearch = "Lo <font color=\"#0033CC\">"; } else{ loSearch= "Lo: <span class=\"blue\">"; } currentPosition = 0; for(int loopIndex = 0; loopIndex < 4; loopIndex++){ int location = input.indexOf(loSearch, currentPosition); int end = input.indexOf("°", location); loTemperature[loopIndex] = input.substring(location + loSearch.length(), end); currentPosition = end + 1; } boolean evening = false; if(input.indexOf(loSearch) < input.indexOf(hiSearch)){ evening = true; hiTemperature[3] = hiTemperature[2]; hiTemperature[2] = hiTemperature[1]; hiTemperature[1] = hiTemperature[0]; } image = new BufferedImage(225, 201, BufferedImage.TYPE_INT_RGB); Graphics2D g = image.createGraphics(); g.setColor(Color.white); g.fillRect(0, 0, 224, 201); g.setColor(Color.gray); for(int loopIndex = 0; loopIndex < 21; loopIndex++){ g.drawLine(25, loopIndex * 10, 224, loopIndex * 10); g.drawLine(loopIndex * 10 + 25, 0, loopIndex * 10 + 25, 199); } g.setColor(Color.blue); Font font = new Font("Courier", Font.PLAIN, 18); g.setFont(font); for(int loopIndex = 20; loopIndex < 200; loopIndex += 20){ g.drawString(String.valueOf(100 - loopIndex / 2), 0, loopIndex + 5); } g.setColor(Color.red); if(!evening){ g.drawOval(65 - 4, 200 - (Integer.parseInt( hiTemperature[0]) * 2) - 4, 8, 8); } g.drawOval(105 - 4, 200 - (Integer.parseInt( hiTemperature[1]) * 2) - 4, 8, 8); g.drawOval(145 - 4, 200 - (Integer.parseInt( hiTemperature[2]) * 2) - 4, 8, 8); g.drawOval(185 - 4, 200 - (Integer.parseInt( hiTemperature[3]) * 2) - 4, 8, 8); if(!evening){ g.drawLine(65, 200 - (Integer.parseInt( hiTemperature[0]) * 2), 105, 200 - (Integer.parseInt(hiTemperature[1]) * 2)); } g.drawLine(105, 200 - (Integer.parseInt(hiTemperature[1]) * 2), 145, 200 - (Integer.parseInt(hiTemperature[2]) * 2)); g.drawLine(145, 200 - (Integer.parseInt(hiTemperature[2]) * 2), 185, 200 - (Integer.parseInt(hiTemperature[3]) * 2)); g.setColor(Color.blue); g.drawOval(65 - 4, 200 - (Integer.parseInt( loTemperature[0]) * 2) - 4, 8, 8); g.drawOval(105 - 4, 200 - (Integer.parseInt( loTemperature[1]) * 2) - 4, 8, 8); g.drawOval(145 - 4, 200 - (Integer.parseInt( loTemperature[2]) * 2) - 4, 8, 8); g.drawOval(185 - 4, 200 - (Integer.parseInt( loTemperature[3]) * 2) - 4, 8, 8); g.drawLine(65, 200 - (Integer.parseInt(loTemperature[0]) * 2), 105, 200 - (Integer.parseInt(loTemperature[1]) * 2)); g.drawLine(105, 200 - (Integer.parseInt(loTemperature[1]) * 2), 145, 200 - (Integer.parseInt(loTemperature[2]) * 2)); g.drawLine(145, 200 - (Integer.parseInt(loTemperature[2]) * 2), 185, 200 - (Integer.parseInt(loTemperature[3]) * 2)); g.setColor(Color.white); g.fillRect(55, 160, 140, 30); g.setColor(Color.blue); g.drawRect(55, 160, 140, 30); font = new Font("Courier", Font.PLAIN, 12); g.setFont(font); g.drawString("Four-Day Forecast", 65, 172); font = new Font("Courier", Font.PLAIN, 9); g.setFont(font); g.drawString("Source: Nat. 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