How do i read a text file and then display the content as a string

I also would like to strip the string from a certain substring and convert the remaining string into an array of floating point numbers. I was thinking of using the read from spreadsheet vi but I'm not exactly sure if that is going to work. Any help would be greatly appreciated.
Solved!
Go to Solution.

Here is what I have so far. What I am trying to do is to display the text file as a string and then strip the "curve" from the text file. I think I did this successfully. Now I want to convert the remaining string into an array of floating point numbers, and display the numbers into an array and on a waveform graph.
Attachments:
hw3datafile.txt ‏1 KB
Q4.vi ‏7 KB

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import java.io.BufferedReader;
import java.io.FileReader;
public class CatFile {
public static void main(String[] args) throws Exception
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     BufferedReader reader = new BufferedReader(file);
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The text file i used contains
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B
C
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What change should be made to print it the same way in the txt file ?

Hi EJP,
I modified the code based on your suggestion and now its working as expected. Thanks
Modified code :
import java.io.BufferedReader;
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How to read a text file and write text file

Hello,
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0 0
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If the text file A look like that
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2 3479502,91618 6756582,6984 77,94 1,#QNAN
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3 0
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public ArrayList<String>save2;
public BufferedWriter bufwriter;
File writefile;
String filepath, filecontent, read;
String readStr = "" ;
String[]temp = null;
public String readfile(String path) {
int i = 0;
ArrayList<String> save = new ArrayList <String>();
try {
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Where does this java program read a text file and how does it output the re

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import java.util.Iterator;
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import java.io.IOException;
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StringBuffer out = null;
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in = new BufferedReader(new FileReader(filename));
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* @returns String
private static String SearchAndReplaceWordsInText(Map words, String text) {
Iterator it = words.keySet().iterator();
while( it.hasNext() ) {
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function getData(p_filename in varchar2,
p_filepath in varchar2
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input_buffer varchar2(4000);
begin
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My email addres is [email protected]
I am new to java. My project requires me to read a text file and pick some values from the text file and populate a table in MS Access. The main fields are from the TEXT. Some of the columns to be read are:
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Date
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FBNINGLAXXX LT : A
FST BANK OF NIGERIA PLC
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Warning Status =
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Appl/Serv = SWIFT Interface
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SPDC FBN East Main A/C
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PLOT 22 TRANS-AMADI BRANCH P.H.
PORT HARCOURT.
RIVERS STATE.
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PROJECT MASTERS NIGERIA LTD.
C101 ELIOGBOLO VILLAGE OFF
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See in this case as you are dealing with Files and database. you need read the File by using the I/O Streams. if you have to select some particular values you can go Random access file.Once you have retrived values. You can go for the second part that is make a jdbc connection to database, and use simple SQL statements to populate those values into the table.
How this will give you a better picture

Read multiple text files and sort them

I am trying to read multiple text files and store the data from the file in vector.
but for days. I am with no luck. anyone can help me out with it? any idea of how to sort them will be appreciated.
Below is part of the code I implemented.
public class packet {
    private int timestamp;
    private int user_id;
    private int packet_id;
    private int packet_seqno;
    private int packet_size;
    public packet(int timestamp0,int user_id0, int packet_id0,int packet_seqno0, int packet_size0)
        timestamp = timestamp0;
        user_id=user_id0;
        packet_id=packet_id0;
        packet_seqno=packet_seqno0;
        packet_size=packet_size0;
    public void setTime(int atimestamp)
        this.timestamp=atimestamp;
    public void setUserid(int auserid)
        this.user_id=auserid;
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    public void setPacketsize(int apacketsize)
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}Here is the data from part of the text files. ( the first column is timestamp, second is userid, third is packetid.....)
0 1 1 1 512
1 2 1 2 512
2 3 1 3 512
3 4 1 4 512
4 5 1 5 512
5 6 1 6 512
6 7 1 7 512
7 8 1 8 512
8 9 1 9 512
9 10 1 10 512
10 1 2 11 512
11 2 2 12 512
12 3 2 13 512
13 4 2 14 512
14 5 2 15 512
15 6 2 16 512
16 7 2 17 512

Here's a standard idiom for object-list-sorting:
/* cnleafdata.txt *********************************************
0 1 1 1 512
1 2 1 2 512
2 3 1 3 512
3 4 1 4 512
4 5 1 5 512
5 6 1 6 512
6 7 1 7 512
7 8 1 8 512
8 9 1 9 512
9 10 1 10 512
10 1 2 11 512
11 2 2 12 512
12 3 2 13 512
13 4 2 14 512
14 5 2 15 512
15 6 2 16 512
16 7 2 17 512
import java.util.*;
import java.io.*;
public class Packet implements Comparable<Packet>{
private int timeStamp;
private int userId;
private int packetId;
private int packetSeqno;
private int packetSize;
public Packet(int timeStamp0, int userId0, int packetId0,
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    userId = userId0;
    packetId = packetId0;
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public Packet(String timeStamp0, String userId0, String packetId0,
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public Packet(String[] a){
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public void setTime(int aTimeStamp){
    timeStamp = aTimeStamp;
public void setUserId(int aUserId){
    userId = aUserId;
public void setPacketId(int aPacketId){
    packetId = aPacketId;
public void setPacketSeqno(int aPacketSeqno){
    packetSeqno = aPacketSeqno;
public void setPacketSize(int aPacketSize){
    packetSize = aPacketSize;
public int getUserId(){
    return userId;
public String toString(){
    return String.format
("%2d %2d %2d %2d %4d", timeStamp, userId, packetId, packetSeqno, packetSize);
public int compareTo(Packet otherPacket){
    return userId - otherPacket.getUserId();
/* main for test */
public static void main(String[] args){
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    ArrayList<Packet> alp;
    alp = new ArrayList<Packet>();
    try{
      BufferedReader br = new BufferedReader(new FileReader("cnleafdata.txt"));
      while ((line = br.readLine()) != null){
        // if (! recordValid(line)){
        //   continue;
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creat text file.vi ‏9 KB
read_from_file.vi ‏14 KB

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Juan

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Hi,
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                if (z > 4) {
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Hi,
Thanks for your reply,
1) Yeah I have a method that asks the question and assigns it to a variable.
2) Well the z will stop once there is no lines to read no?
for the set.add(), I am not that familar...
I changed bit a code and I have this now:
if (z > 4) {
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                        System.out.println(intervalleDiagramme);
if(intervalleDiagramme[i].equals(valeur))
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unique = false;
if (unique)
intervalleDiagramme[j] = valeur;
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I figured a way to assign " " to all the values in my array. But I get this error:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 380
at TP3.lireFichier(TP3.java:305)
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So ok I found my mistake and corrected it. But I want to know is there a way of doing this without setting the size of the array? because sometimes there needs to be 21 values sometimes 19 and sometimes 20....
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Edited by: Ara1992Habs on Dec 13, 2009 7:29 AM
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itunes will only sync with an ios device.
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typically when you first plug in something like an mp3 player you get a windows alert asking if you want to view the contents of the device- say yes. copy your itunes folder to the music folder on your mp3 player.

I just down loaded itones to my computer, then bought a bunch of music. How do I add the songs to my mp3 player. When I go to "file" and then devices the button that says sync isn't availlible to push, so I cant put the music on my mp3??? Help

I just down loaded itones to my computer, then bought a bunch of music. How do I add the songs to my mp3 player. When I go to "file" and then devices the button that says sync isn't availlible to push, so I cant put the music on my mp3??? Help

Which mp3 player? iTunes will only sync with Apple devices.

How do i read a text file and then display the content as a string

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