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Appending items from a txt file to an array

Hey I just started learning how to code. I am using netbeans and I want to transfer some data from a txt.file into an array in java. This might be a really simple fix but i just cant see whats wrong
This is the data in the txt.file:
58_hello_sad_happy
685_dhejdho_sahdfihsf_hasfi
544654_fhokdf_dasfjisod_fhdihds
This is the code I am using however smthg is wrong with the last line of code:
int points = 0;
String name = "";
String a = "";
String b = "";
public void ReadFiles() throws FileNotFoundException{
try (Scanner input = new Scanner(new File("questions.txt"))) {
String data;
while(input.hasNextLine()){
data = input.nextLine();
String[] Questions = data.split("_");
points = Integer.parseInt(Questions[0]);
name= Questions[1];
a = Questions[2];
b = Questions[3];
}
System.out.println(Arrays.toString(Questions));
}
}
This is the error I am getting:
error: cannot find symbol
System.out.println(Arrays.toString(Questions));
Thx soooo much guys.

You can also use the below code if you just want to print the data:
Files.readAllLines(Paths.get("questions.txt")).forEach(line -> {
System.out.println(Arrays.toString(line.split("_")));
});
Output is :
[58, hello, sad, happy]
[685, dhejdho, sahdfihsf, hasfi]
[544654, fhokdf, dasfjisod, fhdihds]
The correct version of your code should be like the below (you must access the variable Question in the declared scope by moving println into end of while loop) :
// definitions...
public void ReadFiles() throws FileNotFoundException{
try (Scanner input = new Scanner(new File("questions.txt"))) {
String data;
while(input.hasNextLine()){
data = input.nextLine();
String[] Questions = data.split("_");
points = Integer.parseInt(Questions[0]);
name= Questions[1];
a = Questions[2];
b = Questions[3];
System.out.println(Arrays.toString(Questions));
}
}
}

Identifying each word in a file

Importing a large list of words and I need to create code that will recognize each word in the file. I am using a delimiter to recognize the separation from each word but I am receiving a suppressed error stating that the value of linenumber and delimiter are not used. What do I need to do to get the program to read this file and to separate each word within that file?
public class ASCIIPrime {
public final static String LOC = "C:\\english1.txt";
#SuppressWarnings("null")
public static void main(String[] args) throws IOException {
//import list of words
#SuppressWarnings("resource")
BufferedReader File = new BufferedReader(new FileReader(LOC));
//Create a temporary ArrayList to store data
ArrayList<String> temp = new ArrayList<String>();
//Find number of lines in txt file
String line;
while ((line = File.readLine()) != null)
{
temp.add(line);
}
//Identify each word in file
int lineNumber = 0;
lineNumber++;
String delimiter = "\t";
//assess each character in the word to determine the ascii value
int total = 0;
for (int i=0; i < ((String) line).length(); i++)
{
char c = ((String) line).charAt(i);
total += c;
}
System.out.println ("The total value of " + line + " is " + total);
}
}

This smells like homework, but alright.
Importing a large list of words and I need to create code that will recognize each word in the file. What do I need to do to get the program to read this file and to separate each word within that file?
You need to...
Read the file
Separate the words from what you've read in
... I don't know what you want to do with them after that. I'll just dump them into a big list.
The contents of my main method would be...
BufferedReader File = new BufferedReader(new FileReader(LOC));//LOC is defined as class variable
//Create an ArrayList to store the words
List<String> words = new ArrayList<String>();
String line;
String delimiter = "\t";
while ((line = File.readLine()) != null)//read the file
{
String[] wordsInLine = line.split(delimiter);//separate the words
//delimiter could be a regex here, gotta watch out for that
for(int i=0, isize = wordsInLine.length(); i < isize; i++){
words.add(wordsInLine[i]);//put them in a list
}
}

You can use the split method of the String class
String[] split(String regex)
This will return an array of strings that you can handle directly of transform in to any other collection you might need.
I suggest also to remove the suppresswarning unless you are sure what you are doing. In most cases is better to remove the cause of the warning than supress the warning.

I used this great tutorial from thenewboston when I started off reading files: https://www.youtube.com/watch?v=3RNYUKxAgmw
This video seems perfect for you. It covers how to save file words of data. And just add the string data to the ArrayList. Here's what your code should look like:
import java.io.*;
import java.util.*;
public class ReadFile {
static Scanner x;
static ArrayList<String> temp = new ArrayList<String>();
public static void main(String args[]){
openFile();
readFile();
closeFile();
}
public static void openFile(){
try(
x = new Scanner(new File("yourtextfile.txt");
}catch(Exception e){
System.out.println(e);
}
}
public static void readFile(){
while(x.hasNext()){
temp.add(x.next());
}
}
public void closeFile(){
x.close();
}
}
One thing that is nice with using the java util scanner is that is automatically skips the spaces between words making it easy to use and identify words.

Unable to output ArrayList contents

I'm reading a txt file wich contains one word in each line, stripping the word from non-alphanumeric characters and storing the results into an Array List.
public class LeeArchivo
{
public static void main(String args[]) throws IOException
{
try
{
BufferedReader lector = null;
List<String> matrix = new ArrayList<String>();
lector = new BufferedReader(new FileReader("spanish.txt"));
String line = null;
while((line = lector.readLine())!=null)
{
//matrix.add(line);
matrix.add((line.split("[^a-zA-Z0-9']").toString()));
}
System.out.println(matrix);
System.out.println(matrix.size());
} catch (IOException e)
{
e.printStackTrace();
}
}
}
when I try to print the contents of the ArrayList all I get is each String Object's memory address. The funny thing is, if I don't split the line ie.: I just matrix.add(line) I get the Strings Ok.
I've tried StringBuilders, Iterators, .toString but nothing works.
Can somebody help me to understand what's going on here?
Thanks.

The line.split("[^a-zA-Z0-9']") call returns a String array. Not a String.
So, you are adding not a String instance to your array list, but the result of String array object toString() method call - the String array object's memory address.
If you need to get the whole string after splitting, you should concatenate all
elements of the array, for example:
while((line = lector.readLine())!=null) {
String[] arr = line.split("[^a-zA-Z0-9']");
String res = "";
for(String s : arr) {
res += s;
}
matrix.add(res);
}

reading from text file to string array

So I can search for a string in my text file, however, I wanted to sort data within this ArrayList and implement an algorithm. Is it possible to read from a text file and the values [Strings] within the text file be stored in a String[] Array.
Also is it possible to separate the Strings? So instead of my Array having:
[Alice was beginning to get very tired of sitting by her sister on the, bank, and of having nothing to do:]
is it possible to an array as:
["Alice", "was" "beginning" "to" "get"...]
.
public static void main(String[]args) throws IOException
{
Scanner scan = new Scanner(System.in);
String stringSearch = scan.nextLine();
BufferedReader reader = new BufferedReader(new FileReader("File1.txt"));
List<String> words = new ArrayList<String>();
String line;
while ((line = reader.readLine()) != null) {
words.add(line);
}
for(String sLine : words)
{
if (sLine.contains(stringSearch))
{
int index = words.indexOf(sLine);
System.out.println("Got a match at line " + index);
}
}
//Collections.sort(words);
//for (String str: words)
// System.out.println(str);
int size = words.size();
System.out.println("There are " + size + " Lines of text in this text file.");
reader.close();
System.out.println(words);
}

To split a line into an array of words, use this:
String words = sentence.split("[^\\w']+");
The regex [^\w'] means "not a word char or an apostrophe"
This will capture words with embedded apostrophes like "can't" and skip over all punctuation.
Edit:
A comment has raised the edge case of parsing a quoted word such as 'this' as this.
Here's the solution for that - you have to first remove wrapping quotes:
String[] words = input.replaceAll("(^|\\s)'([\\w']+)'(\\s|$)", "$1$2$3").split("[^\\w']+");
Here's some test code with edge and corner cases:
public static void main(String[] args) throws Exception {
String input = "'I', ie \"me\", can't extract 'can't' or 'can't'";
String[] words = input.replaceAll("(^|[^\\w'])'([\\w']+)'([^\\w']|$)", "$1$2$3").split("[^\\w']+");
System.out.println(Arrays.toString(words));
}
Output:
[I, ie, me, can't, extract, can't, or, can't]

Also is it possible to separate the Strings?
Yes, You can split string by using this for white spaces.
String[] strSplit;
String str = "This is test for split";
strSplit = str.split("[\\s,;!?\"]+");
See String API
Moreover you can also read a text file word by word.
Scanner scan = null;
try {
scan = new Scanner(new BufferedReader(new FileReader("Your File Path")));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
while(scan.hasNext()){
System.out.println( scan.next() );
}
See Scanner API

How do I read from a File to an array

I am trying to read from a file to an array. I tried two different styles and both aren't working. Below are the two styles.
Style 1
public class FileRead {
int i;
String a[] = new String[2];
public void read() throws FileNotFoundException {
//Z means: "The end of the input but for the final terminator, if any"
a[i] = new Scanner(new File("C:\\Users\\nnanna\\Documents\\login.txt")).useDelimiter("\\n").next();
for(i=0; i<=a.length; i++){
System.out.println("" + a[i]);
}
}
public static void main(String args[]) throws FileNotFoundException{
new FileRead().read();
}
}
Style 2
public class FileReadExample {
private int j = 0;
String path = null;
public void fileRead(File file){
StringBuilder attachPhoneNumber = new StringBuilder();
try{
FileReader read = new FileReader(file);
BufferedReader bufferedReader = new BufferedReader(read);
while((path = bufferedReader.readLine()) != null){
String a[] = new String[3];
a[j] = path;
j++;
System.out.println(path);
System.out.println(a[j]);
}
bufferedReader.close();
}catch(IOException exception){
exception.printStackTrace();
}
}
I need it to read each line of string and store each line in an array. But neither works. How do I go about it?

Do yourself a favor and use a library that provides this functionality for you, e.g.
Guava:
// one String per File
String data = Files.toString(file, Charsets.UTF_8);
// or one String per Line
List<String> data = Files.readLines(file, Charsets.UTF_8);
Commons / IO:
// one String per File
String data = FileUtils.readFileToString(file, "UTF-8");
// or one String per Line
List<String> data = FileUtils.readLines(file, "UTF-8");

It's not really clear exactly what you're trying to do (partly with quite a lot of code commented out, leaving other code which won't even compile), but I'd recommend you look at using Guava:
List<String> lines = Files.readLines(file, Charsets.UTF_8);
That way you don't need to mess around with the file handling yourself at all.