Java code Split text file into multiple text file

**jayraj** · April 18th, 2013, 12:07 PM

Trying to write Java code to choose text file from computer and split into multiple text file based on field information

Text file select:

"First Name","Last Name","Address Line 1","Address Line 2","City","State","ZIP Code","IM Barcode","Sort Position","Tray Number"
"Stephen","Hight","105 Thurman St","","Carrollton","GA","30117-1955","ADADFTFATTTDADADDFFTAFFFTDDTADDFTFDAFAATDFA AATFATDTFTAAFFAADAFFDT",1,1
"Kimberly","Kendall","104 Thurman St","","Carrollton","GA","30117-1956","DAAFATDATAFTADDDTTTTADTFATFFDDFTAFDDATDDAAD FTATADADFDTFDAFDDATFDA",2,1
"James","Boles","108 Thurman St","","Carrollton","GA","30117-1956","DADFDDTFDAFADTFTATADTTDTFATAAFADTATDFTTFAAF TDDFDAFATDTTDTFTFDTTTT",3,1
"Douglas","Kelley","110 Thurman St","","Carrollton","GA","30117-1956","TFTTTAATDFDAFTDFADFDAFFTTFATATDAAFAATTAFDTD ATFAAFDFAFFTTDTDFFAADD",4,1
"Christine","Creel","408 Old Mill Dr","","Carrollton","GA","30117-6313","TFDDDTDAFDFFFATDATADFFDAFFTAATTAFDFFTDADDTF TTAFAFATFDATDFTTFTATFF",989,2
"Elaine","Hobson","410 Old Mill Dr","","Carrollton","GA","30117-6313","DTFFDTAFAFDTADTDDFAFFTDFDTTTDTATDFTDAFTATFA DAAFADDTATTFFTDDTDDFDD",990,2
"Erica","Tisinger","412 Old Mill Dr","","Carrollton","GA","30117-6313","DFFAAFTDTTADDDATDATATFAFDDFADADFDATTFFAFDDT FFADDTAFTAADTDFDAFADTF",991,2
"Brandon","Peterson","418 Old Mill Dr","","Carrollton","GA","30117-6313","FTADAAATDATDFTTDTFDFFTTDTTFDTDDDTFAFFATATDF DAADFTDTATDFATAFDADFTT",992,2
"Robert","Ballard","425 Old Mill Dr","","Carrollton","GA","30117-6314","TFATFFDTADADDAATFTTADFFTFFDFAFAADAAFTAAFDFD FDAFTTFATDFATFFFFTAFAD",993,2
"Susan","Newbern","429 Old Mill Dr","","Carrollton","GA","30117-6314","AADDFFFFFATADFDTDFFDDDDFTTDTAAFDTADAFDDDAFD ADTFDFDFDDTDTAATTATAAA",994,2
"M","Motes","431 Old Mill Dr","","Carrollton","GA","30117-6314","TATDAAFTFTTFADFDDFAFATDDAATDADFDFFFTTADDATT AAAFAATAFADDTAFTTFTTFT",995,3
"Charles","Willis","114 Old Mill Ct","","Carrollton","GA","30117-6317","AFDDTATAADAFFDFFTAATAFTTADDFFDTFFFFDTTADDTT DATDATFFAAAFTFFADFATAD",996,3
"Nancy","Fox","124 Old Mill Ct","","Carrollton","GA","30117-6317","DFDTATTFFDAAADDDTAATFFFTDFFTFTFFDFDFTFADDDF FADDFDFTAFFADFADTTATFA",997,3
"Linda","Smith","126 Old Mill Ct","","Carrollton","GA","30117-6317","ATFTDAFTDTTDFTTDAFFDFTTDDADADTDTTFAFFDDATTF TAFAFFDFFADDATTTAFDDTA",998,3
"Lance","Hatfield","112 Orion Ter","","Carrollton","GA","30117-6318","TDFAFADATAAFFFADATAAFATDTFTTTTAFFFTTFDATDAD ATDAFAFAAFFTAFDFTAFDAA",999,4
"Dr. Lona","Bibbs","1741 Newnan Crossing Blvd E","","Newnan","GA","30265-1599","TFFTDDTADADTFDFFATFDTTTDAFFTDTDTAFTATFTAADF TFAFADTFAATFTTFTDTTDFT",1000,4

Split text file:
split text file1)

Filename+traynumber 1:

"First Name","Last Name","Address Line 1","Address Line 2","City","State","ZIP Code","IM Barcode","Sort Position","Tray Number"
"Stephen","Hight","105 Thurman St","","Carrollton","GA","30117-1955","ADADFTFATTTDADADDFFTAFFFTDDTADDFTFDAFAATDFA AATFATDTFTAAFFAADAFFDT",1,1
"Kimberly","Kendall","104 Thurman St","","Carrollton","GA","30117-1956","DAAFATDATAFTADDDTTTTADTFATFFDDFTAFDDATDDAAD FTATADADFDTFDAFDDATFDA",2,1
"James","Boles","108 Thurman St","","Carrollton","GA","30117-1956","DADFDDTFDAFADTFTATADTTDTFATAAFADTATDFTTFAAF TDDFDAFATDTTDTFTFDTTTT",3,1
"Douglas","Kelley","110 Thurman St","","Carrollton","GA","30117-1956","TFTTTAATDFDAFTDFADFDAFFTTFATATDAAFAATTAFDTD ATFAAFDFAFFTTDTDFFAADD",4,1

Split Text file 2)
Filename+traynumber 2:

"First Name","Last Name","Address Line 1","Address Line 2","City","State","ZIP Code","IM Barcode","Sort Position","Tray Number"
"Christine","Creel","408 Old Mill Dr","","Carrollton","GA","30117-6313","TFDDDTDAFDFFFATDATADFFDAFFTAATTAFDFFTDADDTF TTAFAFATFDATDFTTFTATFF",989,2
"Elaine","Hobson","410 Old Mill Dr","","Carrollton","GA","30117-6313","DTFFDTAFAFDTADTDDFAFFTDFDTTTDTATDFTDAFTATFA DAAFADDTATTFFTDDTDDFDD",990,2
"Erica","Tisinger","412 Old Mill Dr","","Carrollton","GA","30117-6313","DFFAAFTDTTADDDATDATATFAFDDFADADFDATTFFAFDDT FFADDTAFTAADTDFDAFADTF",991,2
"Brandon","Peterson","418 Old Mill Dr","","Carrollton","GA","30117-6313","FTADAAATDATDFTTDTFDFFTTDTTFDTDDDTFAFFATATDF DAADFTDTATDFATAFDADFTT",992,2
"Robert","Ballard","425 Old Mill Dr","","Carrollton","GA","30117-6314","TFATFFDTADADDAATFTTADFFTFFDFAFAADAAFTAAFDFD FDAFTTFATDFATFFFFTAFAD",993,2
"Susan","Newbern","429 Old Mill Dr","","Carrollton","GA","30117-6314","AADDFFFFFATADFDTDFFDDDDFTTDTAAFDTADAFDDDAFD ADTFDFDFDDTDTAATTATAAA",994,2

Split text file 3)
Filename+traynumber 3:

"First Name","Last Name","Address Line 1","Address Line 2","City","State","ZIP Code","IM Barcode","Sort Position","Tray Number"
"M","Motes","431 Old Mill Dr","","Carrollton","GA","30117-6314","TATDAAFTFTTFADFDDFAFATDDAATDADFDFFFTTADDATT AAAFAATAFADDTAFTTFTTFT",995,3
"Charles","Willis","114 Old Mill Ct","","Carrollton","GA","30117-6317","AFDDTATAADAFFDFFTAATAFTTADDFFDTFFFFDTTADDTT DATDATFFAAAFTFFADFATAD",996,3
"Nancy","Fox","124 Old Mill Ct","","Carrollton","GA","30117-6317","DFDTATTFFDAAADDDTAATFFFTDFFTFTFFDFDFTFADDDF FADDFDFTAFFADFADTTATFA",997,3
"Linda","Smith","126 Old Mill Ct","","Carrollton","GA","30117-6317","ATFTDAFTDTTDFTTDAFFDFTTDDADADTDTTFAFFDDATTF TAFAFFDFFADDATTTAFDDTA",998,3

Split text file 4)
Filename+traynumber 4:

"First Name","Last Name","Address Line 1","Address Line 2","City","State","ZIP Code","IM Barcode","Sort Position","Tray Number"
"Lance","Hatfield","112 Orion Ter","","Carrollton","GA","30117-6318","TDFAFADATAAFFFADATAAFATDTFTTTTAFFFTTFDATDAD ATDAFAFAAFFTAFDFTAFDAA",999,4
"Dr. Lona","Bibbs","1741 Newnan Crossing Blvd E","","Newnan","GA","30265-1599","TFFTDDTADADTFDFFATFDTTTDAFFTDTDTAFTATFTAADF TFAFADTFAATFTTFTDTTDFT",1000,4

Like these, Anyone has an idea how can i write a java code for this??
Please help me. I am beginners in Java code. My professor told me that simple.
Please help me guys!!

**Norm** · April 18th, 2013, 12:34 PM

Where are you having problems?
Make a list of the steps the code must do to solve the problem.
Then start with the first item on the list. Code it, compile it, fix errors and execute it. When it works, move to the second item on the list.

**jayraj** · April 18th, 2013, 12:44 PM

Well, I know first part, To Choose text file from Computer and read that file.
Confused 2nd part to Create multiple text file samename traynumber1,2.....
Please help with second part if you can. please..

**Norm** · April 18th, 2013, 12:50 PM

What are the steps the program needs to do? Make a list and start working on the first item in the list.

**jayraj** · April 18th, 2013, 01:01 PM

Hey, I write the code for first part its work good..
so its select only text file from computer and read that file.
But Confused second part what is code for that.. how is look like i don't know..
please help me..

**Norm** · April 18th, 2013, 01:06 PM

But Confused second part what is code for that

Please explain what is the second step you are having problems with.

**jayraj** · April 18th, 2013, 01:09 PM

create multiple text files and split text. like in 1 file tray number only 1 and other data and 2 file tray number 2 and other data..... I don't know code for that actually..

**Norm** · April 18th, 2013, 01:13 PM

create multiple text files and split text.

That sounds like a lot more than a single, simple step. Break the task up into single simple steps.
Make a list of the steps and work on them one at a time.

I don't know code for that

You need the list of steps before you try writing any code.

**jayraj** · April 18th, 2013, 01:22 PM

Step 1) choose text file from computer = Done
Step 2) read that text file = Done
Step 3) look to traynumber where tray number changed create new text files. 1 line is fields it should be same in every text file..== don't know anything about this.. lol

Please help me.. thanks in advanced!!

**Norm** · April 18th, 2013, 01:27 PM

The PrintWriter class is an easy class to use for writing simple text files. Look at its API doc to see how to use it.

Is step 2) going to read the whole file before the program goes to step 3)?
What is it going to do with all the lines it reads?
How is step 3) going to get the lines read by step 2)?
What will step 3) need to do when it gets a line from the file?

Will there be any initialization done before any of the steps?

**jayraj** · April 18th, 2013, 01:36 PM

Well
Step 2) read whole file but is not required.. I just write code for that.. to understand better..
soo
basically need to write code to

to look over traynumber field.. where tray number changed create new text file.. and split data.

**Norm** · April 18th, 2013, 01:42 PM

Which part is a problem now?
look over traynumber field
create new text file
split data.

That list looks to be in the wrong order and missing some steps.
How can you get the number without splitting the line into parts?
You should only create the output file one time at the start and close it one time at the end
Where is the line written to the file?

**jayraj** · April 18th, 2013, 01:53 PM

that's part i am trying to tell you..
1) choose text file.. done
2) look over that text file and traynumber field.. and how many times tray number changed.. suppose it like 3 times than
3) make text files...suppose its like 3 time and make 3 text file..
4) 1st line is fields its should be like header so its should be in every text file
5) split text data....
suppose all data have traynumber 1 soo.. all that data goes into textfilename_traynumber1..
all data have traynumber 2 soo.. all that data goes into textfilename_traynumber2..
...............................................

**Norm** · April 18th, 2013, 01:59 PM

2) look over that text file and traynumber field.. and how many times tray number changed.. suppose it like 3 times than

That will take several steps to do. Break 2) up into the simple steps needed to do it.

5) split text data....

That also will take several steps to do. Break 5) up into simple steps.

**jayraj** · April 18th, 2013, 02:02 PM

If you think that it will take several steps.. so what you want me to do.. do you have any idea.. how can i write code in simple steps..
please let me know.. really need help actually..

**Norm** · April 18th, 2013, 02:05 PM

You need to break the complex steps up into several simpler steps before trying to write any code.
How would you do it manually? Given a deck of cards and the task of separating the deck into piles of the 4 suits, how would you explain the steps to some one else to do the task?

**jayraj** · April 18th, 2013, 02:07 PM

What do you mean?? i didn't understand you!! really sorry for.. its due tomorrow.. I need to finish that today.. its final project.. so please help me..

**Norm** · April 18th, 2013, 02:08 PM

How would you do it manually? Given a deck of cards and the task of separating the deck into piles of the 4 suits, how would you explain the steps to some one else to do the task?

**jayraj** · April 18th, 2013, 02:15 PM

dude, I am not telling you to write code for me.. I just trying to tell you that.. which steps are good.. I mean which comes 1, 2, 3.. And you are right, I need to understand step first before write code.. so..

If you have write this code.. which steps you do..
how you going to write code for this..I mean 1 thing choose text file.. 2...look for tray number 3...4... 5...

Please don't get me wrong.. I am not telling you to write code for me.. I just need help.. I am beginners.. soo... please help me..

**Norm** · April 18th, 2013, 02:20 PM

Ok, if you think you know what each of the steps is supposed to do in enough detail,
start with the next step. You said step 1) was done.
Write the code for step 2), compile it, fix the errors and then execute it to see if it will execute without errors.
If you have any problems with getting step 2) to work, paste the code here along with any error messages and any questions you have about it.

**jayraj** · April 18th, 2013, 02:27 PM

< import javax.swing.JFileChooser;
import javax.swing.filechooser.FileNameExtensionFilter;
 
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.sql.Connection;
 
public class choosetextfile11 {
 
public static void main(String[] args)throws Exception {
 
JFileChooser chooser = new JFileChooser();
FileNameExtensionFilter filter = new FileNameExtensionFilter ("Text/Java files", "txt", "java");
chooser.setFileFilter(filter);
 
int returnVal = chooser.showOpenDialog(null);
 
if(returnVal == JFileChooser.APPROVE_OPTION) {
File f = chooser.getSelectedFile();
BufferedReader br = new BufferedReader (new FileReader(f));
String st = "";
while((st = br.readLine()) != null) {
System.out.println(st);
}
 
}
 
}
 
}
>

-----

this is the code tht i wrote.. How can i write the code for just look over the traynumber field..

**Norm** · April 18th, 2013, 02:33 PM

look over the traynumber field..

The String class has methods that help splitting a line into separate values. Look at the split() method for example.

Please edit your post and wrap your code with code tags:
[code=java]
<YOUR CODE HERE>
[/code]
to get highlighting and preserve formatting.

**jayraj** · April 18th, 2013, 02:53 PM

so where i need to add that code??

--- Update ---

I got confused in this part.. because its has comma in every fields.. so....

**Norm** · April 18th, 2013, 02:56 PM

look over the traynumber field..

If the number is in the line that was read from the file, add code to get the number from that line after it was read from the file.

**jayraj** · April 18th, 2013, 03:01 PM

didn't get confused again.... if i put comma.. than.. it will read every line.. but we need when traynumber changed.. how many times.. so...

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