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Why cant the system find the file that is specified?

in the assignment, the code is suppose to print on a single word from each file that repeats the most. I used a path to get to the list of files used for this assignment and i put them into an array. i cannot seems to find the problem as the array has all the files in it set to string. So why cant it find my file?
below is my code for single thread:
import java.io.*;
import java.util.*;
public class SingleThreaded {
public static void main(String[] args) throws IOException {
File directoryPath = new File("C:\\assignment 3\\links");
String[] dir = directoryPath.list();
System.out.println(Arrays.toString(dir));
String result;
//Scanner scan;
//try{
//Scanner scan = new Scanner(System.in);
long startTime = System.nanoTime();
for (String file : dir) {
//if(file.isFile()){
//BufferedReader inputStream = null;
String line;
//int i;
try{
//inputStream = new BufferedReader(new FileReader(file));file
Scanner scan = new Scanner(new File(file));
HashMap<String, Integer> map = new HashMap<>();
while (scan.hasNextLine()){
line = scan.nextLine().replaceAll("\\p{Punct}", " ");
String[] word = line.split("\s+");
for (int i = 0; i < word.length; i++) {
String string = word[i].toLowerCase();
if (string.length() >= 5) {
if (map.containsKey(string)) {
map.put(string, map.get(string) + 1);
} else {
map.put(string, 1);
}
}
}
}
result = Collections.max(map.entrySet(), Comparator.comparingInt(Map.Entry::getValue)).getKey();
System.out.println( file + ": " + result);
}catch (FileNotFoundException e) {
e.printStackTrace();
}
/* }finally{
if(inputStream != null){
inputStream.close();
}
}
*/
// }
}
long endTime = System.nanoTime();
long totalTime = (endTime - startTime)/1000;
System.out.print("Total Time: " + totalTime);
//} catch (FileNotFoundException e) {
//e.printStackTrace();
//}
}
}
I tried changing the path and using different built-in methods but nothing seems to work.

Try this:
public static void main(String[] args) throws IOException {
File directoryPath = new File("C:\\assignment 3\\links");
File[] files = directoryPath.listFiles();
for (File file : files) {
Scanner scan = new Scanner(file);
Notice the difference, using File.listFiles() instead of File.list().

Create text file dynamically in a specified directory, write data,read data from that file in java

Recently i have tried to write code of above given title and the problem is that i could not get sufficient date to write upon have a look at my code .it is showing some errors like
it is showing invalid token for semicolon after tagfile.createnewfile();
let us look at code:
public class WriteToFileExample {
String path = "G:"+File.separator+"Software"+File.separator+"Files";
String fname= path+File.separator+"fileName.txt";
boolean bool=false;
File f = new File(path);
File f1 = new File(fname);
try {
f1.createNewFile();
bool=f.mkdirs() ;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private static final String FILENAME = "G:\\Software\\Files\\anil.txt";
static Scanner sc = new Scanner(System.in);
public static void main(String[] args) {
String content = null;
String[] str = new String[100];
try (BufferedWriter bw = new BufferedWriter(new FileWriter(FILENAME))) {
System.out.println(" enter no.of line to be inserted into file");
int k = sc.nextInt();
for (int i = 0; i <= k; i++) {
System.out.println(" enter " + i + " line data");
content = sc.nextLine();
bw.write(content);
str[i] = content;
}
System.out.println("The content present in\n
G:\Software\Files\anil.txt is:");
for (int i = 1; i <= k; i++)
System.out.println(str[i]);
} catch (IOException e) {
e.printStackTrace();
}
}
}

Please find the code and then you can use
**Writing** : PrintWriter,Scanner,BufferedWriter etc to write to that file
**Reading** :FileReader,BufferReader,Scanner with these readers etc
String path = "G:"+File.separator+"Software"+File.separator+"Files";
String fname= path+File.separator+"fileName.txt";
File f = new File(path);
File f1 = new File(fname);
f.mkdirs() ;
try {
f1.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Ref : https://www.lynda.com/Java-tutorials/Reading-writing-text-files/107061/113497-4.html
Refer above video which may help

Searching string from text file

I'm trying to search a certain string from an input file. Firstly, the code stores data from input file and then it searches the user input data in the text file, but when i try to print one of the variables it ends up being null.
public class Test {
public static void main(String args[])throws IOException, FileNotFoundException {
BufferedReader input = null;
PrintWriter output = null;
try {
input = new BufferedReader (new FileReader ("kolej.txt"));
Scanner in = new Scanner(System.in);
in.useDelimiter("\n");
int index = 0;
String indata = null;
System.out.println("UITM College and Non-Residents Registration System");
System.out.println("Enter your student id: ");
String matrix = in.next();
UITM student[] = new UITM[10];
//storing data into array
while ((indata = input.readLine())!= null) {
StringTokenizer st = new StringTokenizer(indata,";");
student[index] = new Kolej(st.nextToken(), st.nextToken(), st.nextToken(), Integer.parseInt(st.nextToken()), st.nextToken(),Integer.parseInt(st.nextToken()), st.nextToken(),Integer.parseInt(st.nextToken())) ;
index++;
}
//searching
Scanner txtscan = new Scanner(new File("kolej.txt"));
while(txtscan.hasNextLine()) {
matrix = txtscan.nextLine();
if(matrix.indexOf("word") != -1) {
System.out.println(student[0].getName());
}
}
input.close();
output.close();
}
catch (FileNotFoundException fnfe) {
System.out.println("File not found");
}
catch (IOException ioe) {
System.out.println(ioe.getMessage());
}
catch (Exception e) {
System.out.println(e.getMessage());
}
}
}

Reading into a string from a file, but any text after space on a line removed?

I have a large text file with phrases such as:
citybred JJ
Brestowe NNP
STARS NNP NNS
negative JJ NN
investors NNS NNPS
mountain NN
My objective is to keep the first word of each line, without the spaces, and also make them lowercase.
EX:
citybred
brestowe
stars
negative
investors
mountain
Would be returned if the above text was evaluated.
Any help?
Current code:
public class FileLinkList
{
public static void main(String args[])throws IOException{
String content = new String();
File file = new File("abc.txt");
LinkedList<String> list = new LinkedList<String>();
try {
Scanner sc = new Scanner(new FileInputStream(file));
while (sc.hasNextLine()){
content = sc.nextLine();
list.add(content);
}
sc.close();
} catch(FileNotFoundException fnf){
fnf.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
System.out.println("\nProgram terminated Safely...");
}
Collections.reverse(list);
Iterator i = list.iterator();
while (i.hasNext()) {
System.out.print("Node " + (count++) + " : ");
System.out.println(i.next());
}
}
}

If your token and its POS tag is separated by space :
public class FileLinkList{
public static void main(String[] args) {
BufferedReader br = null;
LinkedList<String> list = new LinkedList<String>();
String word;
try {
String sCurrentLine;
br = new BufferedReader(new FileReader("LEXICON.txt"));
while ((sCurrentLine = br.readLine()) != null) {
System.out.println(sCurrentLine);
word = sCurrentLine.trim().split(" ")[0];
list.add(word.toLowerCase());
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
if (br != null)
br.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
}

Add the following:
content = sc.nextLine();
string[] tokens = content.split(new char[] {' '}, StringSplitOptions.RemovEemptyEntries);
// You can add some validations here...
string word = tokens[0].ToLowerCase();

Try this :
public class FileLinkList {
public static void main(String args[])throws IOException{
String content = new String();
int count=1;
File file = new File("abc.txt");
LinkedList<String> list = new LinkedList<String>();
try {
Scanner sc = new Scanner(new FileInputStream(file));
while (sc.hasNextLine()){
content = sc.nextLine();
if (content != null && content.length() > 0)) {
list.add(content.trim().split(" ")[0].toLowerCase());
}
}
sc.close();
} catch(FileNotFoundException fnf){
fnf.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
System.out.println("\nProgram terminated Safely...");
}
for (String listItem : list) {
System.out.println(listItem);
}
}
}

With Apache Commons IO it is much simpler to read a file into a list of Strings.
import org.apache.commons.io.FileUtils;
List<String> lines = FileUtils.readLines(new File("abc.txt"));
List<String firstWords = new ArrayList<>();
for (String line : lines) {
String firstWord = line.split(" ")[0].toLowerCase();
firstWords.add(firstWord);
}

Reading text from file and storing each word from every line into separate variables

I have a .txt file with the following content:
1 1111 47
2 2222 92
3 3333 81
I would like to read line-by-line and store each word into different variables.
For example: When I read the first line "1 1111 47", I would like store the first word "1" into var_1, "1111" into var_2, and "47" into var_3. Then, when it goes to the next line, the values should be stored into the same var_1, var_2 and var_3 variables respectively.
My initial approach is as follows:
import java.io.*;
class ReadFromFile
{
public static void main(String[] args) throws IOException
{
int i;
FileInputStream fin;
try
{
fin = new FileInputStream(args[0]);
}
catch(FileNotFoundException fex)
{
System.out.println("File not found");
return;
}
do
{
i = fin.read();
if(i != -1)
System.out.print((char) i);
} while(i != -1);
fin.close();
}
}
Kindly give me your suggestions. Thank You

public static void main(String[] args) throws IOException {
File file = new File("/path/to/InputFile");
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
String line = null;
while( (line = br.readLine())!= null ){
// \\s+ means any number of whitespaces between tokens
String [] tokens = line.split("\\s+");
String var_1 = tokens[0];
String var_2 = tokens[1];
String var_3 = tokens[2];
}
}

try {
BufferedReader fr = new BufferedReader(new InputStreamReader(new FileInputStream(file), "ASCII"));
while(true)
{
String line = fr.readLine();
if(line==null)
break;
String[] words = line.split(" ");//those are your words
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
catch(IOException e)
{
e.printStackTrace();
}
Hope this Helps!

Check out BufferedReader for reading lines. You'll have to explode the line afterwards using something like StringTokenizer or String's split.

import java.io.*;
import java.util.Scanner;
class Example {
public static void main(String[] args) throws Exception {
File f = new File("main.txt");
StringBuffer txt = new StringBuffer();
FileOutputStream fos = new FileOutputStream(f);
for (int i = 0; i < args.length; i++) {
txt.append(args[i] + " ");
}
fos.write(txt.toString().getBytes());
fos.close();
FileInputStream fis = new FileInputStream("main.txt");
InputStreamReader input = new InputStreamReader(fis);
BufferedReader br = new BufferedReader(input);
String data;
String result = new String();
StringBuffer txt1 = new StringBuffer();
StringBuffer txt2 = new StringBuffer();
File f1 = new File("even.txt");
FileOutputStream fos1 = new FileOutputStream(f1);
File f2 = new File("odd.txt");
FileOutputStream fos2 = new FileOutputStream(f2);
while ((data = br.readLine()) != null) {
result = result.concat(data);
String[] words = data.split(" ");
for (int j = 0; j < words.length; j++) {
if (j % 2 == 0) {
System.out.println(words[j]);
txt1.append(words[j] + " ");
} else {
System.out.println(words[j]);
txt2.append(words[j] + " ");
}
}
}
fos1.write(txt1.toString().getBytes());
fos1.close();
fos2.write(txt2.toString().getBytes());
fos2.close();
br.close();
}
}