Reading Input From Text File Not Working?

Apr 7, 2014

public void savePlants(ArrayList flowerPack) throws IOException
{
Scanner input = new Scanner(System.in);
String name;

[Code].....

When I open the saved file the information I need seems to be saved, but when I try to load and search it the data is not there. This is homework that was due about 2 days ago. I just want to get it right in my head for next time.

This is my text file: ¬í sr java.util.ArrayListxÒ™Ça I sizexp w sr FlowerNÏŠ¨r;¾  Z hasScentZ hasThornsL flowerColort Ljava/lang/String;xr Plant"ô²Ò0¢ I IDL Nameq ~ xp t Roset redsr Fungus“ +) Z isPoisonousL fungusColorq ~ xq ~  t toadstool t brownsr Weed #©éÇÙN Z isEdibleZ isMedicinalZ isPoisonousL weedColorq ~ xq ~  t dandylion t yellowsq ~  t tulip t pinkxq ~ q ~ q ~ 

View Replies


ADVERTISEMENT

Reading Text File With Specific Input Format - Output Formatted Report

Apr 10, 2014

Here's a link to it : [URL] ....

The basic gist is it's "A program that reads in a text file that uses a specific input format and uses it to produce a formatted report for output."

Specifically :"For this lab you will write a Java program that produces a simple formatted report. The program will prompt the user to enter a file name. This file must contain information in a specific format (detailed below). Each "block" of the file contains information for one player in a competition -- the name of the player followed by a number of different scores that that player achieved. The program should find each player's average score, median score and best and worst scores and display them in a line on the final summary report. The program should also determine which player has the highest average score and which player has the lowest average score."

I get the following errors when I try and compile it:

Enter an input file name: Project11.txt
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException... -1
at java.util.ArrayList.elementData(Unknown Source)
at java.util.ArrayList.get(Unknown Source)
at Project11.getMedian(Project11.java:68)
at Project11.main(Project11.java:27)

I get that the error(s) reside in lines 68 and 27, among problem other areas, but I'm not exactly sure how I can fix them.

Here's my code:

import java.io.*;
import java.util.*;
public class Project11 {
public static void main(String[] args) throws IOException{
Scanner in = new Scanner(System.in);
System.out.print("Enter an input file name: ");
String input = in.nextLine();

[Code] ....

View Replies View Related

Reading Text File Into Object Array And Create Random Access File

Dec 9, 2014

I am working on a project that requires me to build a database with random access file, representing products, the base product contains a name (about 30 characters), a price (double), and a quantity (integer). I have worked on this project for probably 15+ hours and have tried so many things and feel like I've barley made any progress...

The part i am really struggling with is taking the data from the text file and creating an object array with it using the product class. Once ive accomplished that, i have to use that data to create a random access file with the data. Here is the base Product class that must be used to create the objects for the array.

public class Product
{
public String pName;
public String stringName;
public double price;
public int quanity;

[Code]...

these continue for about 40-50 entries, they are not seperated by a blank line though i had to add those so it would display correctly, each entry is on its own line with name seperated with spaces, then price after a comma, then quanity after the second comma.....

View Replies View Related

Reading Text File Into Object Array And Creating Random Access File?

Dec 8, 2014

I am working on a project that requires me to build a database with random access file, representing products, the base product contains a name (about 30 characters), a price (double), and a quantity (integer). I have worked on this project for probably 15+ hours and have tried so many things and feel like I've barley made any progress...

The part i am really struggling with is taking the data from the text file and creating an object array with it using the product class. Once ive accomplished that, i have to use that data to create a random access file with the data.

Here is the base Product class that must be used to create the objects for the array.

public class Product
{
public String pName;
public String stringName;
public double price;
public int quanity;
//Constructor
public Product( String pName, double price, int quanity )

[code]....

and then here is the data from the text file that i must extract to use to create product objects.

Dill Seed,938,34

Mustard Seed,100,64

Coriander Powder,924,18

Turmeric,836,80

Cinnamon (Ground Korintje),951,10

Cinnamon (Ground) Xtra Hi Oil (2x),614,31

Cinnamon (Ground) High Oil (1X),682,19

these continue for about 40-50 entries, they are not separated by a blank line though i had to add those so it would display correctly, each entry is on its own line with name separated with spaces, then price after a comma, then quanity after the second comma.....

View Replies View Related

Reading Text File

Feb 28, 2014

I'm trying to read a .txt file and put each line in a array of strings but it's not working! What is wrong with this code?He stops in "while" loop.

import java.io.File;
import java.io.FileReader;
import java.io.BufferedReader;
import java.lang.Character;
import java.lang.String;

[code]...

View Replies View Related

Reading Off A Text File

Apr 26, 2010

What I am trying to use this code for is to scan the files for a match that was typed with the corresponding name. here is what i have:

import java.util.Scanner;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

[code]...

View Replies View Related

Reading Files From A Text File

May 26, 2014

So I have a text file, and I want my Java program to store names from the text file. How do I do that? This is what I have so far.

Java Code: import java.util.Scanner;
import java.io.File;
BingoCard[] cards = new BingoCard[n]; //Array of BingoCard objects, n being the length of the Array
Scanner sc = new Scanner(File("Names")); //Names is the name of the file
for(int c = 0; c < cards.length; c++)
cards[c] = new BingoCard(sc.nextLine); mh_sh_highlight_all('java');

Here's the constructor.

Java Code: private string myName;
public BingoCard(String name)
{
myName = name;
} mh_sh_highlight_all('java');
Whenever I compile, I get this error message.

View Replies View Related

Reading A Text File For A Graph?

May 2, 2014

I'm trying to print the number of vertices in a text file on a graph which is the first integer in the file and then the type of graph is an undirected graph for a 0 or a 1 for a directed graph. Right now I'm just trying to print the number of vertices which is a 6 in the text file.

Here's the text file:

6,1
0,2 0,4 1,4 1,5 2,1 2,3 2,5 3,2 3,4 4,1 4,5 5,1 5,3 5,2
Im getting the following error:
Exception in thread "main" java.lang.IndexOutOfBoundsException: Index: 6, Size: 0
at java.util.ArrayList.rangeCheckForAdd(Unknown Source)
at java.util.ArrayList.add(Unknown Source)
at Vertices.main(Vertices.java:21)

Then I need to know how to go about reading the next line in the file, do you read it with the nextLine and put it into an arrayList or do I read each index in the graph?

public class Vertices
{
public static void main(String[] args) throws Exception
{
Scanner inFile = new Scanner(new File("graphs.txt"));
// Read the number of vertices
String line = inFile.nextLine();
ArrayList<Integer> list=new ArrayList<Integer>();
String[] data=line.split("[\,]");
int numberofvertices=Integer.parseInt(data[0]);
int typeOfGraph=Integer.parseInt(data[1]);
list.add(numberofvertices,typeOfGraph);
System.out.println("The number of vertices is " + numberofvertices);
}
}

View Replies View Related

Reading Text File Output

Mar 16, 2014

I have to write a program that reads the input from a text file!

Beware the Jabberwock, my son,

the jaws that bite, the claws that catch,

Beware the JubJub bird and shun

the frumious bandersnatch.

I should print the number of lines, the longest line, the number of tokens on each line and the length of the longest token on each line.

I was able to find the number of tokes in the line but im having having problems reading the longest word ,, my program gives me the number of letter of each line instead of only the number of letter of the longest word!!

this should be my output:

Line 1 has 5 tokens (longest = 11)
Line 2 has 8 tokens (longest = 6)
Line 3 has 6 tokens (longest = 6)
Line 4 has 3 tokens (longest = 13)

Longest line : the jaws that bite, the claws that catch,

import java.io.*;
import java.util.*;
public class InputStats{
public static void main (String [] args )

[Code] .....

View Replies View Related

Swing/AWT/SWT :: Reading Text File Into GUI

Jul 2, 2006

I am using a JFrame with JPanel (with radiobuttons and jtextfields) and am wanting to get data from a text file (around 100 words) and input 4 words at a time into my gui. I have been trying to do this by filling an string array with the data, (no problems here) then using jTextField to read the array. (having a few problems in this area though) Am about 80% there...but just wondering is there a better way to approach this problem, that is, inputing words into gui, refreshing, input 4 new words, refreshing, etc.

View Replies View Related

Error In Reading Text File

May 2, 2014

I have a problem in reading the text file. I have my source text file at "D:/input.txt".When the below code is executed the following errors are coming.

" java.lang.NoClassDefFoundError: Try
Caused by: java.lang.ClassNotFoundException: Try
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)

[Code] ....

View Replies View Related

Program Is Not Reading The Text File

Apr 29, 2014

I'm working on a project for my Java class and I've got the code compiled and running, I just don't think that the program is reading the text file the way I want it to.

The text file looks like this:

1168,4.25,10
1305,1.80,42
1345,12.56,16
1388,7.42,30
1480,6.54,80
1495,8.36,48
1560,15.27,65
...

The first number being product number, second being price, and 3rd being quantity. I want to be able to enter the product number and have the Textfields for price and quantity be filled accordingly.

But when I enter a product number (e.g., '1168') no match for the item is being found, regardless of what I enter. Really stumped on this. Here's my code so far --

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.Scanner;
public class Project3
{
private static Frame myframe;
private static TextField productCode;
private static TextField invNumberField;

[Code]...

View Replies View Related

Reading XML File - Get Text Using JAXB

Feb 25, 2015

In my app, I'm reading a xml file (with JAXB) but there is times that I have empty segments. I put some examples :

<tuv> <seg>Unknown: the action taken should always be known</seg> </tuv>

Here I read well the tag "seg", I can get all text "Unknown: the action taken should always be known" but if this text is like this:

<tuv> <seg><bpt i="1" x-wb-tag="b1" />Unknown<ept i="1" x-wb-tag="/b1" />: the action taken should always be known</seg> </tuv>

I don't get anything, my variable is empty and I want to get all text "Unknown: the action taken should always be known"

Could I get this text

"<bpt i="1" x-wb-tag="b1" />Unknown<ept i="1" x-wb-tag="/b1" />: the action taken should always be known"

Or only "Unknown: the action taken should always be known" (without tag "ept" and "bpt"? (I want this like a string)

My variable's value is a "string" ....

View Replies View Related

Histogram Not Reading Input File

May 1, 2015

The following program should read in a file on my desktop (I have the path set in Netbeans to that location) and produce a Histogram. Instead I am receiving this error.

Exception in thread "main" javax.imageio.IIOException: Can't read input file!
at javax.imageio.ImageIO.read(ImageIO.java:1301)
at Histogram.main(Histogram.java:9)
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

Here is the code for the Histogram:

import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
public class Histogram {
public static void main(String[] args) throws Exception {
int[][][] ch = new int[4][4][4];

[code]...

Why it's not reading the file?

View Replies View Related

Reading Text File Content To String

Aug 6, 2014

Show me a code where I can get text file all content to String?

View Replies View Related

Reading Text From File And Saving Parts Of It

Apr 16, 2015

I have a file that has the following text in it:

# Main configuration file for DEDServer
# Starting resource values
startingGold=1000000000
startingElixir=1000000000

[Code] ....

View Replies View Related

Why Is BufferedReader Not Reading But Clearing Text File

Mar 30, 2014

Followed this: [URL]

public static final String FILENAME="BinarySearchTree.txt";
....
public BinarySearchTree(TNode r) throws IOException {
root = r;
textfile = new File(FILENAME);
fw = new FileWriter(textfile.getAbsoluteFile());
bw = new BufferedWriter(fw);
br = new BufferedReader(new FileReader(FILENAME));

[code].....

In the constructor I create the BufferedReader using the FileReader and path to the input text file(in same dir as this project). When I am done reading I close it. In the debugger it is unable to read a single line, then goes to close the file.

View Replies View Related

Scanner Only Reading First Line Of Text File?

Feb 6, 2015

I have a code that imports a text file [URL] .... and has a variety of methods for sorting through it. The file is structured differently when loaded into the environment, as each line begins with a movie and lists all of its actors. Each line has a movie title, then its release date in parentheses, and then the actors in the movie all listed and separated by slashes (Ex: /lastname 1, firstname 1/lastname 2, firstname 2/etc.....

Well I tried to create a method to search all the actors in the file for an inputted word and return the ones that have that word somewhere in their names. I managed to get it to work, but the code only runs for one line of it. How should I get this to do what its doing, but for EVERY line?

Code is here: [URL] ....

View Replies View Related

Reading File Input - Display All Values

Apr 8, 2014

I've been trying to learn how to read in file input and have a question about this piece of code:

Java Code:

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Scanner;
public class readFile {

public static void main(String args[]) throws FileNotFoundException{
File file = new File("file.txt");
int sum[]=new int[5];
int i=0;

[Code] .....

"file.txt" holds the following information:

1
2
88
42
56
89

But my output looks like:

2
42
89

if I take out sum[i]=input.nextInt(); it will display all values in the file.

View Replies View Related

Reading / Outputting A Text File With Modified Content

Feb 15, 2014

This is sort of like the last problem I had but it's all about the formatting at the end. I have a file that reads something like:

Name
a bunch of text here
and perhaps a second
or even a third line

I need to output this as:

Name; "a bunch of text here and perhaps a second or even a third line"

Right now I find 'Name' and it outputs:

Namea bunch of text here and perhaps a second or even a third line

How would I add ";" and quotes in the middle? I can imagine that I may need to find name, then skip to the next line and just add name manually as the variable output of the search string.

This is where I am now

public static void main(String[] args) {
boolean output=false;
String name="";
String junk="CHAMBERS";
TextIO.putln("Search for a name");
name = TextIO.getln();
TextIO.readFile("doc.txt");

[Code] .....

So I'm almost there, but those dange double Names are killing me. I tried to add a bit of code where:

if (line.indexOf(name) >= 0){}

View Replies View Related

Swing/AWT/SWT :: Reading Text File And Display In A Pane

May 15, 2014

I have my below Swing GUI code in which I want to read and display some contents present in text file say (test.txt) which is located in my local disk (C: est.txt). My pane tab 2 is divided into two halves horizontally. How can I read and write the test.txt file contents under the tab tab2 in the first half of the pane(where currently it is 2 written)?

Sample test.txt present in my local hard disk location
username:test1
Password:test1
DataBasename: testDB

CODE FOR TABBED PANE

import javax.swing.*;
import java.awt.*;
public class SplitPaneExp {
public static void main(String[] args){
Runnable r = new Runnable() {
public void run() {
JFrame frame = new JFrame("WELCOME");

[Code] ......

View Replies View Related

Reading A Text File And Inserting Line Into String?

Dec 6, 2014

I am having issues insert each line of the simple textfile into a specific varible I want it to go to. For example my text file is ordered like this

Dallas
78 F
North, 15 mph
dallasimage
Denver
29 F
South, 10 mph
denverimage

and I want Dallas in city variable, 78f in temperature variable, and so on until text ends, at the moment is all goes into city variable, it all prints from there! I tried inserting it into an array but it would read all the lines previous to it in addition to reusing readline and all failed.

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
public class Textreader {
public static void main(String[] args) {

[code]....

View Replies View Related

Reading User-specified Text File Into ArrayList Of Strings Using Java?

Apr 23, 2015

I am advised to use a while loop the Scanner method hasNextLine() and in the while loop body, call the Scanner method nextLine(), and add the returned String to the ArrayList of Strings. what I have gotten so far:

Scanner input = new Scanner(new File(""));
while(input.hasNextLine()) {
String line = input.nextLine();
System.out.println(line);

View Replies View Related

Reading From Text File - Array Index Out Of Bounds Exception

Oct 21, 2014

I need to read from a text file given to us that has a list of books with authors names and book titles separated by an @ symbol for our delimiter. Here is the code I have right now, but it throws an ArrayIndexOutOfBoundsException at line 7...and I am unsure why?

import java.io.*;
import java.util.*;
public class Driver {
public static void main(String[] args) {
new Driver(args[0]);

[Code] ....

I realize that it must have something to do with my command line argument...but I am unsure what. Am I not entering the file name correctly?

View Replies View Related

Reading From Text File - Print Linked List On Console

Mar 9, 2015

How can i convert this linked list code to a read from input.txt

The first line in the input file will give the elements to initialize the linked list with. Consecutive lines will provide operation instructions.

Your code should read one line at a time. After reading each line, it should perform the corresponding operation and print the linked-list on the console.

If an operation is not possible, it should print "N/A".

Sample input file. Please note, the comments (// ...) are given for explanation, the input file will not have them:

4, 5, 6, 3// First line. This will provide the initial values for the linked list : 4->5->6->3
1, 9// Add a 9 at the front of the linked-list. After this operation the linked-list should be: 9->4->5->6->3
2, 1// Add a 1 at the end of the linked-list. After this operation the linked-list should be: 9->4->5->6->3->1
3, // Delete the first node in the linked-list. After this operation the linked-list should be: 4->5->6->3->1
4, // Delete the last node in the linked-list. After this operation the linked-list should be: 4->5->6->3
5, 11// Delete the node with the value 11 in it. Since this is not possible, it should print "N/A"
5, 6// Delete the node with the value 6 in it. After this operation the linked-list should be: 4->5->3

Sample output to the console:

4->5->6->3
9->4->5->6->3
9->4->5->6->3->1
4->5->6->3->1
4->5->6->3
N/A
4->5->3

My Code:

LinkedList.Java

class linkedList
{
protected Node start;
protected Node end ;
public int size ;
 
[Code] .....

View Replies View Related

Reading Entire Integer Text File And Putting Inside Array?

Apr 5, 2014

I have an assignment on sorting, i kno i can get the sorting down but im having an issue with inputing the 512 ints in a file into an array. the instructor provided us with a file with 4 equal sets of ints. i tried to make my array of size [scan.nextInt()] and it cuts off the last 21 ints. and skips the first int. how can i get all of the integers in the text file into my array? this is what i have so far. if i hard code the array to size 50000 and then try to print the array it compiles but errors out when running it.

System.out.println("Please Enter text file in this format, XXXXX.txt :");
String file =fileName.nextLine();
Scanner scan = new Scanner(new File(file));
int [] data = new int[scan.nextInt()]; <-------here it skips first int
int count= data.length;
for (int i=0; i<data.length-1;i++) {
data[i]=scan.nextInt();
}
System.out.print(Arrays.toString(data));

rst 4 ints in output are: 501, 257, 390, 478...., supposed to be 492,501,390....and last ints are: ....88, 83, 79, 0 and supposed to be :88 83 79 77 76 72 71 71 66 57 56 48 48 41 33 30 23 23 18 17 15 13 9....it replace last ints with 0. why ? and how do i fix this. attached it the text file

View Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved