Retrieve Last element from Collection

Hi,
I am a beginner in Java. Can somebody tell me how to retrieve last element from java.util.collection without Iterating?

Hi,
I am a beginner in Java. Can somebody tell me
how to retrieve last element from
java.util.collection without Iterating?You realize of course that this is rather silly since not every Collection necessarily has a "last" element. For it to have the notion of a "last" element it would have be ordered and would be a List.

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I have a slight problem I have been trying to figure it out for days but can't see where my problem is, its probably staring me in the face but just can't seem to see it.
I am trying to print out my 2 dimensional array outdie my try block. Inside the trying block I have two for loops in for the arrays. Within the second for loop I have a while to put token from Stringtokeniser into my 2 arrays. When I print my arrays in this while bit it prints fine however when I print outside the try block it only print the last element and lots of blank space before the element.
Below is the code, hope you guys can see the problem. Thank you in advance
   import java.io.*;
   import java.net.*;
   import java.lang.*;
   import java.util.*;
   import javax.swing.*;
   public class javaflights4
      public static final String MESSAGE_SEPERATOR = "#";
      public static final String MESSAGE_SEPERATOR1 = "*";
      public static void main(String[] args) throws IOException
         String data = null;
         File file;
         BufferedReader reader = null;
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         String flights[] [];
               //String flightdata[];
         flights = new String[21][7];
         int x = 0;
               //flightdata = new String[7];
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         try
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                        flights [x] [y] = tokenised.nextToken();
                        //System.out.print("*"+ flights [x] [y]+"&");
               System.out.println();
            catch(ArrayIndexOutOfBoundsException e1)
               System.out.println("error at " + e1);
            catch(Exception e)
            finally
               try
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                  catch(Exception e)
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         int j = 0;
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A number of problems.
First, I bet you see a lot of "error at" messages, don't you? You create a 21x7 array, then go through the first array up to 21, going through the second one all the way to 21 as well.
your second for loop should go to flights[x].length, not flights.length. That will eliminate the need for ArrayIndexOutOfBounds checking, which should have been an indication that you were doing something wrong.
Second, when you get to flights[0][0] (the very first iteration of the inner loop) you are taking every element from the StringTokenizer and setting flights[0][0] to each, thereby overwriting the previous one. There will be nothing in the StringTokenizer left for any of the other (21x7)-1=146 array elements. At the end of all the loops, the very first element in the array (flights[0][0]) should contain the last token in the file.
At the end, you only print the first element (i=0, j=0, println(flight[ i][j])) which explains why you see the last element from the file.
I'm assuming you have a file with 21 lines, each of which has 7 items on the line. Here is some pseudo-code to help you out:
count the lines
reset the file
create a 2d array with the first dimension set to the number of lines.
int i = 0;
while (read a line) {
Tokenize the line;
count the tokens;
create an array whose size is the number of tokens;
stuff the tokens into the array;
set flights[i++] to this array;
}

How to delete the last element of a collection without iterating it?

how to delete the last element of a collection without iterating it?

To add to jverd's reply, even if you could determine the last element, in some collections it is not guaranteed to always be the same.
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How do i get the hierarchy at the runtime??
For eg: if the hierarchy level is 3, i can get the UI elemets like.. ui elements of ui elements of ui elements of window 1.. this works fine
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madhusudhanjr wrote:
actually am implementing Applescripts in Java, the output what we get in Java is not exactly similar to Applescript.. Is their any way to make a list or Array of the above codes output??
Because they are objects.
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end tell
allButtons
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end cleanUpErr
You will get a button to each line (the last line will be empty).
Here is an example of the result :
«class butT» 1 of window "xyz"
«class butT» "bla" of window "xyz"
«class butT» 3 of window "xyz"
«class butT» "OK" of «class scrb» 1 of «class scra» 1 of window "xyz"
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barge

Hi all, and thanx for suggestions,
Yatarchivist, I've tried printing booking times by retrieving the value from the ArrayList and outputting it to a JOPane........with the same result, namely that they seem to be loaded properly (see code below).
My instinct is to agree with all of u that the problem is in loading the Array, but I can't for the life of me find the crux of the problem, or a way round it. All the tests I do seem to confirm that it's loading properly, just not regurgitating anything but the last item in the ArrayList
for(int i =0; i < 12; ++i) {
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Pleeez, someone enlighten this troubled soul!!
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I am experiencing a weired Problem.
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I use path to string option to store image path into database and while retrieving the string is again converted into path but it gives out an error as the output of array to spreadsheet string gives out a tab at the end which is unable for the IMAQ read file to recognise.but when i use the path of the image directly into IMAQ readfile the image is opened . so how to remove the tab only at the end of output of the spreadsheet string(whose length can vary)? I have also attached my program with this.
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retrieve_images_from_DB.vi ‏65 KB
file_path_to_db_(images).vi ‏40 KB
create_table_for_images.vi ‏45 KB

indhu wrote:
> Thanks for your reply!
> But my problem is to remove only the last element(which is a tab or an
> alphabet) from a spreadsheet string of any length.
If you just want to remove the last character of a string just use the
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Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

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I have: int x = 234; String y = "12ABC". I write those two elements in an output file. Now, when reading from that file the content of the file is: 23412ABC and I need to take the two elements x and y.
Can anyone help ?

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Re: [iPlanet-JATO] Re: Retrieving all Values from a Tiled View

Todd,
Let me try to explain you this time. I have a text field in a TiledViewBean.
When I display the page, the text field
html tag is created with the name="PageDetail.rDetail[0].tbFieldName" say
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<input type=text name="PageDetail.rDetail[0].tbFieldName" value=""
maxlength=9 size=13>
<input type=text name="PageDetail.rDetail[0].tbFieldName" value=""
maxlength=9 size=13>
<input type=text name="PageDetail.rDetail[0].tbFieldName" value=""
maxlength=9 size=13>
When the form is submitted, I want to get the text field values using the
method getTbFieldName().getValues() which
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Now in case when my TiledView is bound to a model, it creates the html tags
as follows.
<input type=text name="PageDetail.rDetail[0].tbFieldName" value=""
maxlength=9 size=13>
<input type=text name="PageDetail.rDetail[1].tbFieldName" value=""
maxlength=9 size=13>
<input type=text name="PageDetail.rDetail[2].tbFieldName" value=""
maxlength=9 size=13>
Now when I say getTbFieldName().getValues() it returns only the first
element values in the object[] and the rest of the
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May be we need to create a utility method do get these values from
requestContext.
raju.
----- Original Message -----
From: Todd Fast <toddwork@c...>
Sent: Saturday, July 07, 2001 3:52 AM
Subject: Re: [iPlanet-JATO] Re: Retrieving all Values from a Tiled View
Raju.--
I wanted to know how the getValues() method works the reason being,
when the tiled view is NOT bound to a model, it populates all the
fields with the same name as some thing likeI'm afraid I don't understand your point--can you please clarify? Do you
mean "value" instead of "name"?
What are you trying to do? What behavior are you expecting but notseeing?
>
Without further clarification, I can say that the setValues() methodsNEVER
populates data on multiple rows of a (dataset) model, nor does it affect
multiple fields on the same row. Perhaps what you are seeing is theeffect
of default values. Model that derive from DefaulModel have the ability to
carry forward the values set on the first row to other rows in lieu ofdata
in those other rows. This behavior is for pure convenience and can be
turned off, and it is turned off for the SQL-based models.
Todd
[email protected]

Hi,
I wanted to know how the getValues() method works the reason being,
when the tiled view is NOT bound to a model, it populates all the
fields with the same name as some thing like
PageDetail.rDetail[0].tbFieldValue
PageDetail.rDetail[0].tbFieldValue
in which case, the getValues() method works fine.
But in case where the tiled view is bound to a model, it populates
with different field names such as,
PageDetail.rDetail[0].tbFieldValue
PageDetail.rDetail[1].tbFieldValue
in this case, the getValues() doesn't work. Any soultion to this?
We are using Moko 1.1.1.
thanks in advance,
raju.
--- In iPlanet-JATO@y..., "Todd Fast" <toddwork@c...> wrote:
Does anyone know of is there a single method to get all values of a
display
field in a tiled view without having to iterate through all the
values ie
resetTileIndex() / nextTile() approach.
ie Something that returns an Object[] or Vector just like ND returned a
CspVector. I tried using the getValues() methods but that allways returns
a
single element array containing the first element.
(I think now, that method is used for multi selecteable ListBoxes)Actually, no. We can add this in the next patch, but for now, I'd recommend
creating a simple utility method to do the iteration on an arbitrary model
and build the list for you.
Todd

Retrieving all values from hashmap in order you put them in

Hi guys,
I want to retrieve all values from a HashMap in the order I put them in.
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R.

How to retrieve the values from a table if they differ in Unit of Measure

How to retrieve the values from a table if they differ in Unit of Measure?

If no data is read
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* If required move the read quantity in the appropriate column.
LOOP AT internal_table ASSIGNING <fs>.
CASE <fs>-msehi.
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ENDLOOP.
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Regards,
Raymond

Retrieve Last element from Collection

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