Array List of Array Lists working for first item but not for second.

**javapenguin** · February 14th, 2012, 01:53 AM

What am I doing differently in the first part, i.e., chapterTexts.get(0)) that I'm not doing in the second (i.e. chapterTexts.get(1)) ?

Here's all the parts that could be effecting it:

 
chapterScanners = new Scanner[19];
         try
         {
            chapterScanners[0] = new Scanner(new File("./s3c1.txt"));
         }
 
            catch(FileNotFoundException fnfe)
            {
               System.out.println("Not found.");
            }
 
         try
         {
            chapterScanners[1] = new Scanner(new File("./s3c2.txt"));
         }
 
            catch(FileNotFoundException fnfe)
            {
               System.out.println("Not found.");
            }
 
         //selectPictures = new JMenu("Select Pictures");
         chapterTexts = new ArrayList<ArrayList<String>>();
         chapterTexts.add(new ArrayList<String>());
         chapterTexts.add(new ArrayList<String>());
 
 
 
 
         Scanner lineScanner = null;
         while(chapterScanners[0].hasNext())
         {
            //System.out.println(chapterScanners[0].next());
            String temp = chapterScanners[0].next();
            if (temp.equals("<Page1>"))
            {
               String var = "";
               while (chapterScanners[0].hasNext() && !chapterScanners[0].nextLine().equals("</Page1>"))
               {
                  String nextInputLine = chapterScanners[0].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
 
                     var = var + lineScanner.nextLine();
 
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(0).add(var);
 
            }
            else if (temp.equals("<Page2>"))
            {
               String var = "";
               while (chapterScanners[0].hasNext() && !chapterScanners[0].nextLine().equals("</Page2>"))
               {
                  String nextInputLine = chapterScanners[0].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(0).add(var);
 
            } 
 
            else if (temp.equals("<Page3>"))
            {
               String var = "";
               while (chapterScanners[0].hasNext() && !chapterScanners[0].nextLine().equals("</Page3>"))
               {
                  String nextInputLine = chapterScanners[0].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(0).add(var);
 
            } 
 
 
            else if (temp.equals("<Page4>"))
            {
               String var = "";
               while (chapterScanners[0].hasNext() && !chapterScanners[0].nextLine().equals("</Page4>"))
               {
                  String nextInputLine = chapterScanners[0].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(0).add(var);
            } 
 
            else if (temp.equals("<Page5>"))
            {
               String var = "";
               while (chapterScanners[0].hasNext() && !chapterScanners[0].nextLine().equals("</Page5>"))
               {
                  String nextInputLine = chapterScanners[0].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(0).add(var);
            } 
 
            else if (temp.equals("<Page6>"))
            {
               String var = "";
               while (chapterScanners[0].hasNext() && !chapterScanners[0].nextLine().equals("</Page6>"))
               {
                  String nextInputLine = chapterScanners[0].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(0).add(var);
            } 
 
            else if (temp.equals("<Page7>"))
            {
               String var = "";
               while (chapterScanners[0].hasNext() && !chapterScanners[0].nextLine().equals("</Page7>"))
               {
                  String nextInputLine = chapterScanners[0].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(0).add(var);
            } 
 
            else if (temp.equals("<Page8>"))
            {
               String var = "";
               while (chapterScanners[0].hasNext() && !chapterScanners[0].nextLine().equals("</Page8>"))
               {
                  String nextInputLine = chapterScanners[0].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(0).add(var);
            } 
 
            else if (temp.equals("<Page9>"))
            {
               String var = "";
               while (chapterScanners[0].hasNext() && !chapterScanners[0].nextLine().equals("</Page9>"))
               {
                  String nextInputLine = chapterScanners[0].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(0).add(var);
            } 
 
 
         }
 
         System.out.println("Size: " + chapterTexts.get(0).size());
 
         lineScanner = null;
         while(chapterScanners[1].hasNext())
         {
            //System.out.println(chapterScanners[1].next());
            String temp = chapterScanners[1].next();
            if (temp.equals("<Page1>"))
            {
               String var = "";
               while (chapterScanners[1].hasNext() && !chapterScanners[1].nextLine().equals("</Page1>"))
               {
                  String nextInputLine = chapterScanners[1].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
 
                     var = var + lineScanner.nextLine();
 
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(1).add(var);
 
            }
            else if (temp.equals("<Page2>"))
            {
               String var = "";
               while (chapterScanners[1].hasNext() && !chapterScanners[1].nextLine().equals("</Page2>"))
               {
                  String nextInputLine = chapterScanners[1].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(1).add(var);
 
            } 
 
            else if (temp.equals("<Page3>"))
            {
               String var = "";
               while (chapterScanners[1].hasNext() && !chapterScanners[1].nextLine().equals("</Page3>"))
               {
                  String nextInputLine = chapterScanners[1].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(1).add(var);
 
            } 
 
 
            else if (temp.equals("<Page4>"))
            {
               String var = "";
               while (chapterScanners[1].hasNext() && !chapterScanners[1].nextLine().equals("</Page4>"))
               {
                  String nextInputLine = chapterScanners[1].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(1).add(var);
            } 
 
         }
 
         System.out.println("Size: " + chapterTexts.get(1).size());
         for (int i =0; i < chapterTexts.get(1).size(); i++)
         {
            System.out.println(chapterTexts.get(1).get(i));
 
 
         }

As it printed out all the text from the files, I don't think ti's a Scanner problem that's causing this so posting the documents won't help any.

It says the size of the first one is 9, as it should be. But the size of the second is being reported as 1, though it should be 4. What's going wrong?

I think it's my tags. What's going wrong to make it so that it picks up the tags as part of the read in in the second one but not in the first?

I'm posting the documents after all.

It's something very simple no doubt. It happened before in the last one too. Though I can't find the error this time.

**KevinWorkman** · February 14th, 2012, 08:29 AM

As you've been told countless times before- if you want help, you'll have to post an SSCCE that demonstrates exactly what you're talking about. No extra stuff, not hundreds of lines of code (or even dozens of lines of code), not attachments.

**javapenguin** · February 14th, 2012, 05:40 PM

Never mind, it was the very strict and annoying syntax of my parser that required a full line break plus an empty line between paragraphs but only a line break before the ending page tag.

My only other problem for now, is how would you get something that had a JLabel and a JTable to be in a JPanel and add the JPanel such that it wouldn't have this huge space gap of empty space that isn't needed?

i.e., I have all the backgrounds as green and the part that has the JTable has a bit that is gray at the end of the JTable. Though the larger the table, the less the gray.

And it keeps making this weird gap between the title (for the JTable) i.e. the JLabel, and the JTable. I've tried GridLayout, BorderLayout, etc. The weird thing is that it sometimes will get better, or worse, when I add a bunch of panels below, the panel below it varies in size depending on how many pages are in the chapter. Sometimes this really increases the space gap even further and other times it makes it nearly to the tolerable point.

Is there anything besides layout manager that you can use to get components to fit nicely? The layout manager alone doesn't seem to always do it properly. If a JPanel has GridLayout but some of the sub panels that are components of that JPanel have BorderLayout for them, will that cause the spacing to sometimes not be neat? This is more of a design question than a coding question.

Also, I was trying to get a JPanel that only contains a flashing JLabel to be a bit smaller. Right now it's too large.

How do you set the size of components and get them to keep that size is what I'm wondering. The setSize() method appears to be useless and doesn't do anything. It only seems to affect JFrames and JInternalFrames and the like.

**KevinWorkman** · February 14th, 2012, 09:28 PM

I'm not repeating myself anymore. You know the drill by now. SSCCE (not your whole program) and a specific question, or we can't help you.

**javapenguin** · February 14th, 2012, 10:30 PM

OK, what are UI's used for? Like the setUI() methods? I know UI stands for User Interface but is there ever a reason to design your own UI or are they only there as "helper classes"? If you can make custom UI's, could you use a UI to change how your GUI looks?

What is a UI used for?

**KevinWorkman** · February 15th, 2012, 08:00 AM

What did the API tell you? Yes, depends what you mean, and yes. Again, what did the API tell you?

Also, what does that have to do with any question about ArrayLists?

**javapenguin** · February 15th, 2012, 05:12 PM

Nothing really. I guess a more pressing question would be to ask how to make this parser thing so that it won't abort if it encounters only 1 line break, instead of two

i.e.

text:
"Bla bla bla bla bla bla bla bla bla bla bla bla bla bla

Yak Yak Yak Yak Yak
La La La La La "

Will only ouput
Bla bla bla bla bla bla bla bla bla bla bla bla bla bla

Yak Yak Yak Yak Yak

Either that, or with the page tag thing, it'll read it in all at once and ignore the tags, hence why the size was only 1. (Unless that was because I had a line break before the ending tag like this

<Page1>

Bla bla bla bla

Bla bla bla bla

</Page1>

As a result of those weird annoyances, it often only adds 1 thing to the ArrayList or it adds only part of the text to it, even though it might get all the pages.

 String var = "";
               while (chapterScanners[2].hasNext() && !chapterScanners[2].nextLine().equals("</Page7>"))
               {
                  String nextInputLine = chapterScanners[2].nextLine();
 
                  lineScanner = new Scanner(nextInputLine);
 
                  while(lineScanner.hasNext())
                  {
                     var = var + lineScanner.nextLine();
                  }
 
                  var = var + "\n" + "\n";
               }
               chapterTexts.get(2).add(var);
            }

How do I tell it, in the code above, that it's ok to read in a single line break?

For instance:

Bla bla bla bla bla bla bla bla bla bla bla bla bla
I wish the tab key worked here!

I think is only getting the first line

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