Stucked With Methods

Question

hi guys, I have almost done everything, except one thing that gives me a grief all the time.. perhaps it's kinda stupid, but.. can someone please take a pick at this code (I know its huge) and help me with how to call those static methods. everytime I'm receiving messages like "cannot resolve symbols" but I cannot figure out what is it wrong and how am I suppose to invoke them:((
thanks!
any kind of help is appreciated:)
// the program works its way through webpages and locates email addresses, collects them and prints them out
// limitations:
// - maximum of 100 web pages
// - maximum of 100 email addresses
// - maximum of 100 lines per web page
import java.io.*;
import java.net.*;
import java.util.*;
// This class uses an array to keep track of email addresses
class emailClass {
private int EMailArrayMax = 100;
private int EMailArrayCounter = 0;
private String[] EMailArray = new String [EMailArrayMax];
// AddElement method
// adds an address to the array
// if the array is not full
// - convert the address to lower case
// - add the address to the array
public void addElement(String Address, String Element)
if (EMailArrayCounter < EMailArrayMax)
EMailArray[EMailArrayCounter] = Element;
String sAddress = Address.toLowerCase();
// printAll method
// prints the entire array of email addresses
public static void printAll(String[] EMailArray, int EMailArrayMax)
for (int a=0; a<EMailArrayMax; a++)
System.out.println(a + " " + EMailArray[a]);
// contains method
// checks to see if an email address is already in the array
// see if the address is in the array
// return true if it is
// return false if it is not
public boolean contains(String Data)
boolean found = false;
for (int a=0; a<EMailArrayCounter; a++)
if (EMailArray[EMailArrayCounter].compareTo(Data)==0)
found = true;
return found;
// Links class
// it keeps track of what pages have been visited
// it is IDENTICAL to the email class
class LinksClass
private int LinksArrayMax = 100;
private int LinksArrayCounter = 0;
private String[] LinksArray = new String [LinksArrayMax];
public static void printAll(String[] LinksArray, int LinksArrayMax)
for (int a=0; a<LinksArrayMax; a++)
System.out.println(a + " " + LinksArray[a]);
public boolean contains(String Data)
boolean found = false;
for (int a=0; a<LinksArrayCounter; a++)
if (LinksArray[LinksArrayCounter].compareTo(Data)==0)
found = true;
return found;
// the main class
public class SpamMaster {
static boolean debug = true;
// the main recursive method that retrieves the webpages
public static void GetPage(String PageAddress, // the name of the webpage to retrieve
int Depth, // the depth
emailClass EMail, // the emailclass object that should add found email addresses to
LinksClass Links) { // the linksclass object that should add found links to
// print the address of the page that we are working on
System.out.println("http://www.google.ca/search?q=find+me&ie=UTF-8&oe=UTF-8&hl=en&btnG=Google+Searc
h");
// check to see if we have gone to deep
// Do nothing if the depth is < 0;
if (Depth < 0)
// hold the entire web page in single string.
// that will make it easy to tear apart using the StringTokenizer
String contents = "";
// now ... open the webpage, add it to the String one line at a time
// add a space between the lines as you add them together
try {
URL url = new URL(PageAddress);
BufferedReader inStream = new BufferedReader(
new InputStreamReader(url.openStream()));
String line = inStream.readLine();
while (line != null)
// add the line to the array
contents = contents + " " + line;
line = inStream.readLine();
catch (Exception e)
System.out.println("Sorry, page not found");
// check for email addresses
// print the address to the screen too so we can see what is going on
StringTokenizer stEmail = new StringTokenizer(contents); //break on whitespace
String sEmail;
while (stEmail.hasMoreTokens())
sEmail = stEmail.nextToken().toLowerCase();
// check for the "@" ... that means we have an email address
// look for the "@" in the token in sEmail
if (sEmail.indexOf("@") >= 0) {
// print the email address to the screen
System.out.println(sEmail);
// check to see if the email address is in the email object already
// if it is not, add it.
// okey dokey. Let's see if there are any links on the page
// assuming that a link is of the form <a href = "http://.......">
// use a StringTokenizer
StringTokenizer st = new StringTokenizer(contents, "\n \t\">"); //break on newline, blank, tab, ", and
greater-than
String s;
while (st.hasMoreTokens()) {
s = st.nextToken().toLowerCase();
// check for the "<a" ... that means we have a link!
if (s.equals("<a")) { // check for the <a
s = st.nextToken().toLowerCase();
if (s.indexOf("href") == 0) { // then it must start with the word href
s = st.nextToken();
if (s.toLowerCase().indexOf("http://") == 0) { //an absolute link URL
// at this point, we have found a link!
// it is in the variable s
// check to see if the link is in the links object
// if it is ... do nothing
// if it is not in the links object ... do the following
// - add the link to the object
// - print a message that a link is being added ... print the link so you know what it is
// - call this method that we are in now ... GetPage (yes, that is recursion).
// calling the method, do the following:
// - pass the method call the link that you just found
// - pass it maximumdepth reduced by one
// - pass the email and links objects so they can be used
// the main method
public static void main(String[] args) throws IOException
BufferedReader kb = new BufferedReader (new InputStreamReader (System.in));
// create a email address object
emailClass email = new emailClass();
// create a links object
LinksClass Links = new LinksClass();
// create a String variable for the start web page address
String StartPage;
// create an int variable for the maximum depth
int Depth = 5;
// ask the user for the start web page address
System.out.println("Enter the start web page:");
// use http://www.google.ca/search?q=find+me&ie=UTF-8&oe=UTF-8&hl=en&btnG=Google+Search to test
things with
StartPage = kb.readLine();
// ask the user for the maximum depth
System.out.println("Enter the depth:");
String Depth1 = kb.readLine();
// call the GetPage method that traverses the website
// pass it:
// - web page address to visit
// - maximum page depth
// - email object
// - visitedpages object
GetPage(PageAddress, Depth, emailClass, LinksClass);----------------> what else to put if not this?
// print the results
System.out.println("");
System.out.println("");
System.out.println("");
System.out.println("Results");
System.out.println("*******");
System.out.println("");
System.out.println("Pages Visited:");
// call the printAll method of the links object
printAll( I KNOW ITS STUPID BUT I DONT KNOW WHAT TO PUT ANYMORE:((( !!! );
System.out.println("");
System.out.println("Email Addresses Found:");
// call the method to print the email addresses
printAll( );
// got to call the method to save the email addresses to file here

Answer 1

in line:218 you have:
GetPage(PageAddress, Depth, emailClass, LinksClass);
This will result in a "cannot resolve symbol error" because
1) PageAddress is not defined in your main method nor is it defined in your main class. You have to declare and initialize it to something: eg: String PageAddress = "whatever you want";
2) emailClass is a class. You want to pass the instance of that class that you created. In line 185 you did emailClass email = new emailClass(); so you want to pass the object email.
3) same thing for LinksClass. Don't pass the class, pass the object that you created. Line 189:
LinksClass Links = new LinksClass();
=)
Liam