Using a linkedQueue properly.

[berky]

hello and thank you for clicking on my question!

I am trying to impliment a linkedquue for the first time and I'm having some troubles.

What I want:

I want to have my linkedQ read in words, then store them untill I use a command prompt ".".

for example, I typing in a sentence and it is stored, then I later typing in a"."and the words that are stored are then printed out.

What I have:
I think my Q is working properly. I can get the words to be stored and then printed out, but I cant isolate it to just the "." command. If I do a dot command , it instead started printing out what I type in, but it does not print out the old words I stored.

below is my main programs code :

/ $Id: jroff.java,v 1.2 2011-01-20 21:20:03-08 - - $
 
import java.io.*;
import java.util.Scanner;
import static java.lang.System.*;
 
class jroff{
 
 
   static final String STDIN_NAME = "-";
 
   static void scanfile (String filename, Scanner infile) {
 
 
int flag=0;
    linkedqueue <String> wordq = new linkedqueue <String> ();
    String mm="null";
      for (int linenr = 1; infile.hasNextLine(); ++linenr) {
         String line = infile.nextLine();
            if(line.trim().length()==0) {
                out.printf("the line is blank .sp1"); 
            }
        String[] words = line.split ("\\s+");
            if (words.length > 0 && words[0].startsWith (".")) {
                //wordq.remove ();
                //mm=wordq.remove ();
                flag=1;
                //out.printf("medic is sspy!");
            out.printf("you have initilaized a command of some sort");
            commands.cmd command = commands.cmd_map.get (words[0]);
            if (command == null) {
               auxlib.warn (filename, linenr, words[0],
                     "invalid command");
            }else {
               command.exec (words);
            }
         }else if(flag==1){
            int counter=0;
            int width=50;
                for (String word: words) { 
            //for (String test: line.split ("\\s+")) {
                if (word.length () == 0) continue;
               wordq.insert (word);
               wordq.remove ();
               mm=wordq.remove ();
           // }
 
         // buffer of sorts
             if(counter!=0){
                    counter=counter+1+mm.length();
                }
                if(counter==0) {
                    counter=mm.length();
                }
                if(counter>width) {
                    out.printf("%n");
                    counter=mm.length();
                }
                printparagraph(mm,width,counter);
 
            }
out.printf("%n");
         }
      }
 
   }
 
   public static void main (String[] args) {
 
      linkedqueue <String> words = new linkedqueue <String> ();
      linkedqueue wordqueue = new linkedqueue ();
      if (args.length == 0) {
        out.printf("blank slate, nothing special in here, run normally");
         scanfile (STDIN_NAME, new Scanner (in));
      }else {
         for (String filename : args) {
            if (filename.equals (STDIN_NAME)) {
                out.printf("so you are utilizing that - thing, good job!");
               scanfile (STDIN_NAME, new Scanner (in));
            }else {
               try {
                  Scanner scan = new Scanner (new File (filename));
                  scanfile (filename, scan);
                  scan.close();
               }catch (IOException error) {
                  auxlib.warn (error.getMessage());
out.printf("their is no file...why would you expect there to be?");
               }
            }
         }
      }
   }
 
 static void printparagraph(String word,int width,int charc) {
//out.printf("TESTING TESTING READ ALL ABOUT IT");
        if(charc==1+word.length()) {
            out.printf("%s",word);
        }
        boolean first=true;
        if(charc==0 ||charc ==word.length()) {
            first=true;
        }
        if(charc !=0 && charc !=word.length()) {
            first=false;
        }
        if(charc >width) {
            first=true;
        }
        if(first==true) {
            out.printf("%s",word);
        }
        if(charc <= width && first==false && charc!=1+word.length()) {
            out.printf(" ");
            out.printf ("%s", word);
        }
//new method perhaps
        if(word=="!"||word=="."||word=="?") {
            out.printf("%s",word);
            out.printf("  ");
        }
 
/*if counter==0. print new word
if filled add to counter
if over width then print 2 spaces
 
 
*/
    }
 
 
 
 
 
 
 
}
 
 
 

and here is the code for my LINKEDQUEUE

// $Id: linkedqueue.java,v 1.1 2011-01-20 21:05:43-08 - - $
 
import java.util.NoSuchElementException;
import java.io.*;
import java.util.Scanner;
import static java.lang.System.*;
 
class linkedqueue <item_t> {
 
   //insert(item_t);
   private class node{
      item_t item;
      node link;
   }
 
   //
   // INVARIANT:  front == null && rear == null
   //          || front != null && rear != null
   // In the latter case, following links from the node pointed 
   // at by front will lead to the node pointed at by rear.
   //
   private node front = null;
   private node rear = null;
 
   public boolean empty (){
      return front == null;
   }
 
   public void insert (item_t any) {
      // STUB: Add code here to insert an item_t into the queue.
        if(front==null) {
        node newnode = new node();
        newnode.item =any;
        //out.printf("%sNODE",any);
        front=newnode;
        rear=newnode;        
       }
          else {
        node newnode= new node();
        newnode.item =any;
        newnode.link=front;
        front=newnode;
 
       // out.printf("%sNODE",any);
            }
   }
 
   public item_t remove(){
item_t place= front.item;
        if(front==null){
      front=front.link;
          // out.printf("node?");
}
        if(front==rear){
//out.printf("node?");
        rear=null;
      //  front=null;
        }
 
//out.printf("PORTAL");
//item_t place= front.item;
//out.printf("%sOMGOMG\n",place);
return place;
    }
 
 
 
 
   //   if (empty ()) throw new NoSuchElementException ();
      // STUB: Add code for remove here.
   //   return null; // STUB: Delete this return statement.
 //  }
 
}
 

please help me sold this problem