Thread: NEED TO EXTRACT FROM CSV FILE PUT INTO JTEXTFIELDS (JAVA SWING GUI)

Hello
My names Harry, and im a beginner in Java programming, i have taken a few courses so know some of the terms and lingo and how to build a basic program.
i am currently working on a GUI app, which is why im here, i have managed to make this App button less, so that the information i want to display just does, without having to do anything apart from run it, the information is displayed in 'JTextFields' ontop of a 'JLabel' there are 20 so TextFields, each of these display a line of writing, however the lines of writing are in seperate notepad files, i would like to code it so that it will read the first line of a notepad and then put it in a textfield and then read the 2nd line of writing and display it in a different textfield, and the same for the other 18 or so. i am working my way up to being able to take information from a CSV(comma seperated file).

Is there a way to display information in the same CSV file in different textfields, and if these numbers get changed, how would i go about making it automatically update?

Any help/Soruce code etc., would be very helpful.

================================================== ==============================
Example of my code.(if this helps)
================================================== ==============================
This part of my code creates and puts the textfield in a certain location, and then goes into "MyFile" to read the information and display it into the "TxtCardiff" JTextFieldThis works fine, and i have this same code repeated 20 times, and have 20 different notepad files, i need to put all information into one file, and still display it into the different textfields!)

txtCardiff = new JTextField();
		try {
			FileReader MyFileReader = new FileReader(
					"MyFile");
			int character = MyFileReader.read();
			while (character != -1) {
				output += (char) character;
				character = MyFileReader.read();
			}
			MyFileReader.close();
		} catch (IOException e1) {
			System.out.println(e1.getMessage());
		}
		txtCardiff.setText(output);
 
		txtCardiff.setText(output);
		txtCardiff.setBackground(Color.GREEN);
		txtCardiff.setBounds(305, 699, 102, 20);
		frame.getContentPane().add(txtCardiff);
		txtCardiff.setColumns(10);

================================================== ==============================

Regards,
Harry

Sorry about the large text, didnt realise it would be that big.

do you know what listeners i would be using because i have looked into it and the only one i have come across is when you select the textfield and hit the enter key.

i dont think i made myself clear,
i wanted help with how to display single lines of text in different textfeilds from a csv with all the infromation in it.

E.g.
-----------------------------------
CSVfile
cardiff:234567
bristol:546734
manchester:458675
-----------------------------------
and then display each of these locations into 3 different textfields.

Regards

Yes i know there are no restrictions.

but how do i take the strings from the CSV file, and display them in seperate TextFields?
each textfield is going to have different information in it,

i know what to do just not how:

go to file
read first line
display line in tf1
read 2nd line
display line2 in tf2
etc....
but i dont know how to code this
this also needs to be looped every 10-20 seconds to make sure nothing has changed.

Does that make it clear?
sorry im new to this forum stuff.

Regards,

I am having problems taking data from a CSV file and then
outputting the different lines of information into different textfields

i dont know how to decide it or if it can be referenced thats why i put this question up, so that i can to find out:

- How to extract data from a csv file and put each line of the file into a different TextField.

And changes will be made to the Files contents. and when this happens i want the textfield to update.
i know i can use listeners to do all sorts of things, but i dont know which listeners i need.

Regards,

I was able to do this with a single file that had multiple lines of code and display them in one place, however i dont know how to take different lines of this file and display them in different locations.

By the way, thank you for all your help

So i will have a Textfield on a Map on the location of Cardiff, the information in the textfield will then say Cardiff:5463965, and one for Bristol, one for london, one for manchester etc,

I dont have anything to determine this, the only thing that i can use to determine this will be a comma,

Or i could use the fact that each line will have a different location on it, would that work?

Is there a way to make it so the program will look for say the word 'Manchester', and then display the line with the word 'Manchester' on it to a particular tf ?