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StockData.java
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StockData.java
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import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.util.*;
public class StockData {
String sym;
public StockData(String s) {
sym = s;
}
public String toString() {
return sym;
}
public String getName() throws IOException{
URL url = new URL("https://finance.yahoo.com/quote/" + sym + "?p=" + sym + "&.tsrc=fin-srch");
URLConnection uc = url.openConnection();
InputStreamReader inStream = new InputStreamReader(uc.getInputStream());
BufferedReader b = new BufferedReader(inStream);
String l = b.readLine();
while(l!=null) {
if (l.contains("pageData\":{")) {
int target = l.indexOf("pageData\":{");
int firstNum = target+20;
String x = "";
while(Character.isLetter(l.charAt(firstNum)) || l.charAt(firstNum)== '.' || l.charAt(firstNum)== '-' || l.charAt(firstNum)== '&' || l.charAt(firstNum)== ',' || l.charAt(firstNum)== ' ') {
x += l.charAt(firstNum);
firstNum ++;
}
if (x.equals("Symbol Lookup from Yahoo Finance")) {
System.out.println("Invalid input");
return "You did not input a valid symbol";
}
System.out.println("You selected " + x + " as your stock.");
}
l = b.readLine();
}
return l;
}
public String getShareValue() throws IOException{
URL url = new URL("https://finance.yahoo.com/quote/" + sym + "?p=" + sym + "&.tsrc=fin-srch");
URLConnection uc = url.openConnection();
InputStreamReader inStream = new InputStreamReader(uc.getInputStream());
BufferedReader b = new BufferedReader(inStream);
String l = b.readLine();
while(l!=null) {
if (l.contains("\"currentPrice\"")) {
int target = l.indexOf("currentPrice");
int dec = l.indexOf(".", target);
int firstNum = target+21;
String x = "";
while(l.charAt(firstNum)== '.' || l.charAt(firstNum)== '0' || l.charAt(firstNum)== '1' || l.charAt(firstNum)== '2' || l.charAt(firstNum)== '3' || l.charAt(firstNum)== '4' || l.charAt(firstNum)== '5' || l.charAt(firstNum) == '6' || l.charAt(firstNum)== '7' || l.charAt(firstNum)== '8' || l.charAt(firstNum)== '9') {
x += l.charAt(firstNum);
firstNum ++;
}
System.out.println("This stock is currently valued at " + x + " per share.");
}
l = b.readLine();
}
return l;
}
public String marketChange() throws IOException{
URL url = new URL("https://finance.yahoo.com/quote/" + sym + "?p=" + sym + "&.tsrc=fin-srch");
URLConnection uc = url.openConnection();
InputStreamReader inStream = new InputStreamReader(uc.getInputStream());
BufferedReader b = new BufferedReader(inStream);
String l = b.readLine();
while(l!=null) {
if (l.contains("regularMarketChange")) {
int target = l.indexOf("regularMarketChange");
int firstNum = target+28;
String x = "";
while(l.charAt(firstNum)== '.' || l.charAt(firstNum)== '-'|| l.charAt(firstNum)== '0' || l.charAt(firstNum)== '1' || l.charAt(firstNum)== '2' || l.charAt(firstNum)== '3' || l.charAt(firstNum)== '4' || l.charAt(firstNum)== '5' || l.charAt(firstNum) == '6' || l.charAt(firstNum)== '7' || l.charAt(firstNum)== '8' || l.charAt(firstNum)== '9') {
x += l.charAt(firstNum);
firstNum ++;
}
if (x.equals("0.022999883")) {
return("Invalid input");
}
System.out.println("This stock changed by " + x + " today.");
}
l = b.readLine();
}
return l;
}
public String percentChange() throws IOException{
URL url = new URL("https://finance.yahoo.com/quote/" + sym + "?p=" + sym + "&.tsrc=fin-srch");
URLConnection uc = url.openConnection();
InputStreamReader inStream = new InputStreamReader(uc.getInputStream());
BufferedReader b = new BufferedReader(inStream);
String l = b.readLine();
while(l!=null) {
if (l.contains("regularMarketChangePercent")) {
int target = l.indexOf("regularMarketChangePercent");
int firstNum = target+35;
String x = "";
while(l.charAt(firstNum)== '-' || l.charAt(firstNum)== '.' || l.charAt(firstNum)== '0' || l.charAt(firstNum)== '1' || l.charAt(firstNum)== '2' || l.charAt(firstNum)== '3' || l.charAt(firstNum)== '4' || l.charAt(firstNum)== '5' || l.charAt(firstNum) == '6' || l.charAt(firstNum)== '7' || l.charAt(firstNum)== '8' || l.charAt(firstNum)== '9') {
x += l.charAt(firstNum);
firstNum ++;
}
if (x.equals("1.2602675")) {
return "Invalid input";
}
System.out.println("This stock changed by " + x + "% today.");
}
l = b.readLine();
}
return l;
}
public static void main(String[] args) throws IOException{
System.out.println("How many stocks would you like to input (10 or less stocks)? ");
Scanner scan = new Scanner (System.in);
int arraySize = scan.nextInt();
if (arraySize == 1) {
System.out.println("Input the symbol of the stock that you would like to view. For example, AAPL for Apple, GOOG for Google, etc: ");
}
else if (arraySize < 1 || Character.isDigit(arraySize)) {
System.out.println("Please enter a valid input");
}
else if (arraySize > 10) {
System.out.println("The limit of stocks to input is 10.");
}
else {
System.out.println("Input the symbol of the " + arraySize + " stocks that you would like to view. For example, AAPL for Apple, GOOG for Google, etc: ");
}
StockData[] array = new StockData[arraySize] ;
for (int i = 0; i < array.length; ++i) {
String symbol = scan.next();
StockData stocks = new StockData(symbol);
array[i] = stocks;
}
for (StockData stocks : array) {
stocks.getName();
stocks.getShareValue();
stocks.marketChange();
stocks.percentChange();
}
//stocks.getName();
//stocks.getShareValue();
//stocks.marketChange();
//stocks.percentChange();
}
}