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When I run my code I get (0, null) and cant figure out why

I am creating a program that is reading a file of names and ages then printing them out in ascending order. I am parsing through the file to figure out the number of name age pairs and then making my array that big.
The input file looks like this:
(23, Matt)(2000, jack)(50, Sal)(47, Mark)(23, Will)(83200, Andrew)(23, Lee)(47, Andy)(47, Sam)(150, Dayton)
When I am running my code I get the output of (0,null) and I am not sure why. I have been trying to fix it for a while and am lost. If anyone can help that would be great My code is below.
public class ponySort {
public static void main(String[] args) throws FileNotFoundException {
int count = 0;
int fileSize = 0;
int[] ages;
String [] names;
String filename = "";
Scanner inputFile = new Scanner(System.in);
File file;
do {
System.out.println("File to read from:");
filename = inputFile.nextLine();
file = new File(filename);
//inputFile = new Scanner(file);
}
while (!file.exists());
inputFile = new Scanner(file);
if (!inputFile.hasNextLine()) {
System.out.println("No one is going to the Friendship is magic Party in Equestria.");
}
while (inputFile.hasNextLine()) {
String data1 = inputFile.nextLine();
String[] parts1 = data1.split("(?<=\\))(?=\\()");
for (String part : parts1) {
String input1 = part.replaceAll("[()]", "");
Integer.parseInt(input1.split(", ")[0]);
fileSize++;
}
}
ages = new int[fileSize];
names = new String[fileSize];
while (inputFile.hasNextLine()) {
String data = inputFile.nextLine();
String[] parts = data.split("(?<=\\))(?=\\()");
for (String part : parts) {
String input = part.replaceAll("[()]", "");
ages[count] = Integer.parseInt(input.split(", ")[0]);
names[count] = input.split(", ")[1];
count++;
}
}
ponySort max = new ponySort();
max.bubbleSort(ages, names, count);
max.printArray(ages, names, count);
}
public void printArray(int ages[], String names[], int count) {
System.out.print("(" + ages[0] + "," + names[0] + ")");
// Checking for duplicates in ages. if it is the same ages as one that already was put in them it wont print.
for (int i = 1; i < count; i++) {
if (ages[i] != ages[i - 1]) {
System.out.print("(" + ages[i] + "," + names[i] + ")");
}
}
}
public void bubbleSort(int ages[], String names[], int count ){
for (int i = 0; i < count - 1; i++) {
for (int j = 0; j < count - i - 1; j++) {
// age is greater so swaps age
if (ages[j] > ages[j + 1]) {
// swap the ages
int temp = ages[j];
ages[j] = ages[j + 1];
ages[j + 1] = temp;
// must also swap the names
String tempName = names[j];
names[j] = names[j + 1];
names[j + 1] = tempName;
}
}
}
}
}
output example
File to read from:
file.txt
(0,null)
Process finished with exit code 0

What your code does is to Scan the file twice.
In the first loop you do
String data1 = inputFile.nextLine();
Code reads first line and then scanner goes to the next (second) line.
Later you do again inputFile.nextLine(); The second line is empty and the code never goes into the second loop and content is never read.
If you can use Lists, you should create two array lists and add ages and names into the arraylists in the first scan, so you scan the file once. When done, you could get the Array out of the arraylist.
If you should only use arrays and you want a simple update, just add another Scanner before the second loop:
ages = new int[fileSize];
names = new String[fileSize];
inputFile = new Scanner(file); // add this line

How to print out a line in a textfile into 2 different lines on console Java

public static FAQ_Alisa_QnA[] oipReadQuestion(){
String questionA1,thisUser;
int indexQuestion;
String [] entryDetails;
FAQ_Alisa_QnA [] entries = new FAQ_Alisa_QnA[100];
//Read file = "activities.txt".
File file = new File ("ReadOIP.txt");
int count = 0;
try{
Scanner sc = new Scanner(file);
//do this while there is a next line in file.
while(sc.hasNextLine()){
String line = sc.nextLine();
entryDetails = line.split(";");
// index = entryDetails[0];
indexQuestion = Integer.parseInt(entryDetails[0]);
thisUser = entryDetails[1];
questionA1 = entryDetails[2];
//Object to store values of entry.
FAQ_Alisa_QnA a = new FAQ_Alisa_QnA();
// a.index = Integer.parseInt(index);
a.indexQuestion = indexQuestion;
a.thisUsername = thisUser;
a.questionA1 = questionA1;
entries [count] = a;
count++;
}
}catch(FileNotFoundException fnfe){
System.out.println(fnfe.getMessage());
}
FAQ_Alisa_QnA [] allQuestions = new FAQ_Alisa_QnA [count];
for(int i = 0; i < count; i++){
allQuestions[i] = entries[i];
}
return allQuestions;
}
public static FAQ_Alisa_QnA[] oipReadAnswers(){
String indexAnswer, answer11, thisUser;
String [] answerDetails;
FAQ_Alisa_QnA [] answers = new FAQ_Alisa_QnA[100];
//Read file = "activities.txt".
File thisFile = new File ("AnsReadOIP.txt");
int count1 = 0;
try{
Scanner sc1 = new Scanner(thisFile);
//do this while there is a next line in file.
while(sc1.hasNextLine()){
String line = sc1.nextLine();
answerDetails = line.split(";");
// index = entryDetails[0];
indexAnswer = answerDetails[0];
thisUser = answerDetails[1];
answer11 = answerDetails[2];
//Object to store values of entry.
FAQ_Alisa_QnA a = new FAQ_Alisa_QnA();
// a.index = Integer.parseInt(index);
a.indexAnswer = Integer.parseInt(indexAnswer);
a.thisUsername = thisUser;
a.answer11 = answer11;
answers [count1] = a;
count1++;
}
}catch(FileNotFoundException fnfe){
System.out.println(fnfe.getMessage());
}
FAQ_Alisa_QnA[] allAnswers = new FAQ_Alisa_QnA[count1];
for(int i = 0; i < count1; i++){
allAnswers[i] = answers[i];
}
return allAnswers;
}
public static void oipPrintQnA(){
FAQ_Alisa_QnA [] allQuestions = oipReadQuestion();
FAQ_Alisa_QnA [] allAnswers = oipReadAnswers();
System.out.println("Organization in project work");
System.out.println("=============================");
for(int i = 0; i < allQuestions.length; i++){
System.out.println( allQuestions[i].indexQuestion + "-" + "Question" + ":");
System.out.println(allQuestions[i].thisUsername + ":" +allQuestions[i].questionA1);
System.out.println(" ");
for(int j = 0; j < allAnswers.length; j++){
if(allQuestions[i].indexQuestion == allAnswers[j].indexAnswer){
System.out.println("Answer for question "+ + allAnswers[j].indexAnswer+ ":" );
System.out.println(allAnswers[j].thisUsername+ ":" +allAnswers[j].answer11);
System.out.println(" ");
}
}
}
}
//So I have read answers and questions and I saved my qns and answers in 2 different text files. This is because I have add functions to it but i never put it here cuz my qn is not related to that. I just wanna know how to print out the qn and answer in 2 lines so that if the qn is so long then it can print out in two lines//
So these are how my text files look like:
ReadOIP.txt
1;Shafiq;How to organize your time well when you're juggling with so many project work and assignments on the same day? Best answer:The best solution to this is to early planning or schedule your time wisely. Write in a calendar beforehand the work you are going to do for an assignment.
2;Rohannah;Does having a timetable works to finish your project on time?
3;lymeoww;Is task allocation really important to be organized in project work?
AnsReadOIP.txt
1;Andy23;The best solution to this is to early planning or schedule your time wisely. Write in a calendar beforehand the work you are going to do for an assignment .2; Does having a timetable to do your project works? //For example this line, it will print out very long on the console//
2;Betty23;of course it does!
1;Ying Qian;just organize lorh
3;lymeoww;Yes, it is important!
//Refer to this picture//

Java Reading in Images Through a Loop

I'm reading a couple images with the exact same name but numbered from 1-6 so I've used and array to read in the images, for example AstroWalkLeft1, AstroWalkLeft2 into arimgAstroWalkleft[]. This is what I have:
public void GetImages() {
imgMonster = new ImageIcon("Assets\\MonsterSingle.png").getImage();
for (int i = 1; i <= nASTROIMGMAX; i++) {
arimgAstroWalkLeft[i] = new ImageIcon("Assets\\AstroWalkLeft" + i + ".png").getImage();
arimgAstroWalkRight[i] = new ImageIcon("Assets\\AstroWalkRight" + i + ".png").getImage();
}
imgAstroStandLeft = new ImageIcon("Assets\\AstroStandLeft.png").getImage();
imgAstroStandRight = new ImageIcon("Assets\\AstroStandRight.png").getImage();
imgBackground1 = new ImageIcon("Assets\\Hallway.png").getImage();
imgBackground2 = new ImageIcon("Assets\\Observation Room.png").getImage();
}
My problem is replacing the numbers in the image's name to the variable in my loop. I'm wonder how I put that variable in where the number once was.

Reading from file/array. No values. No errors

Any ideas what I am missing here? I am reading from a file array. The values in the text file don't get stored and there is no output. All I get is "names and totals" but no values.
I don't know.
private int[] totals;
private String[] names;
private String[] list;
private int count;
public void readData() throws IOException {
BufferedReader input = new BufferedReader(new FileReader("cookies.txt"));
//create the arrays
totals = new int[count];
names = new String[count];
list = new String[count];
//read in each pair of values
String quantityString = input.readLine();
for (int i = 0; i < count; i++) {
names[i] = input.readLine();
list[i] = input.readLine();
quantityString = input.readLine();
totals[i] = Integer.parseInt(quantityString);
}
}
public void display() {
System.out.println("names totals")
for (int i = 0; i < count; i++)
System.out.println(list[i] + " \t " + names[i] + " \t" + totals[i]);
}
//called to compute and print the result
public void printResults() {
//find the best teacher
int maxIndex = 0;
int maxValue = 0;
//for each record stores
for (int i = 0; i < count; i++) {
//if we have a new MAX value so far, update variables
if (maxValue < totals[i]) {
maxValue = totals[i];
maxIndex = i;
}
}
}

You never give the variable count a value, so it initialized to 0 by Java. This means that your arrays are of size 0 also.
So since count is zero, you never read anything from the file, which is why nothing is stored in your arrays and also why nothing is printed out.
Example: Reading a File line-by-line
// create temporary variable to hold what is being read from the file
String line = "";
// when you don't know how many things you have to read in use a List
// which will dynamically grow in size for you
List<String> names = new ArrayList<String>();
List<Integer> values = new ArrayList<Integer>();
// create a Reader, to read from a file
BufferedReader input = new BufferedReader(new FileReader("cookies.txt"));
// read a full line, this means if you line is 'Smith 36'
// you read both of these values together
while((line = input.readLine()) != null)
{
// break 'Smith 36' into an array ['Smith', '36']
String[] nameAndValue = line.split("\\s+");
names.add(nameAndValue[0]); // names.add('Smith')
values.add(Integer.parseInt(nameAndValue[1]); // values.add(36);
}

BufferedReader seems to only read last line of file

I'm trying to write a method to take a multiline tab-delimited file and return the contents of that file as an arraylist of String arrays (each line is a String[], and each such String[] is an element of an arraylist). My problem is, I can't tell if the output is correct or not. I've printed each arraylist element and String[] element as they are saved to the arraylist, and those printings look correct. But after the arraylist is returned and I print the String[] in it, they appear to only have the contents of the very last line of the file. I'm suspecting it might be something about FileReader or BufferedReader that I don't know. Anyhoo, here's the code:
public class DataParsingTest {
static File AAPLDailyFile = new File("./textFilesForMethodTests/dataParsingPractice2.tsv");
public static void main(String[] args) throws FileNotFoundException, IOException {
ArrayList<String[]> stringArrayList = fileToStringArray(AAPLDailyFile);
System.out.println("stringArray.size() = " + stringArrayList.size());
System.out.println(stringArrayList.get(0)[0]);
for (int i = 0; i < stringArrayList.size(); i++) {
for (int j = 0; j < stringArrayList.get(i).length; j++) {
System.out.println("index of arraylist is " + i + " and element at index " + j + " of that array is " + stringArrayList.get(i)[j]);
}
}
}
public static ArrayList<String[]> fileToStringArray(File file) throws FileNotFoundException, IOException {
ArrayList<String[]> arrayListOfStringArrays = new ArrayList<String[]>();
FileReader fileReader = new FileReader(file);
BufferedReader bufferedReader = new BufferedReader(fileReader);
int nextChar = 0;
int noOfTokens = 1; // because the first token doesn't have a tab or newline before it
int startIndex = 0, endIndex = 0, tokenIndex = 0;
String toRead = "";
toRead = bufferedReader.readLine();
for (int i = 0; i < toRead.length(); i++) {
if (toRead.charAt(i) == '\t') {
noOfTokens++;
}
}
System.out.println("noOfTokens = " + noOfTokens);
bufferedReader.close();
fileReader.close();
String[] productString = new String[noOfTokens];
startIndex = 0;
endIndex = 0;
tokenIndex = 0;
FileReader fileReader2 = new FileReader(file);
BufferedReader bufferedReader2 = new BufferedReader(fileReader2);
tokenIndex = 0;
int count = 1;
while ((toRead = bufferedReader2.readLine()) != null) {
System.out.println("toRead = " + toRead);
startIndex = -1; // [L - so that the first time an array element is assigned, it's upped to 0]
endIndex = 0;
tokenIndex = 0;
while (true) {
endIndex = toRead.indexOf("\t", startIndex + 1);
if (endIndex == -1) {
productString[tokenIndex] = toRead.substring(startIndex + 1);
System.out.println("tokenIndex = " + tokenIndex);
System.out.println("productString[" + tokenIndex + "] = " + productString[tokenIndex]);
tokenIndex++;
count++;
arrayListOfStringArrays.add(productString);
System.out.println("just added an array to the list. the first element is " + productString[0]);
break;
}
productString[tokenIndex] = toRead.substring(startIndex + 1, endIndex);
System.out.println("tokenIndex = " + tokenIndex);
System.out.println("productString[" + tokenIndex + "] = " + productString[tokenIndex]);
startIndex = endIndex;
tokenIndex++;
count++;
}
}
fileReader2.close();
bufferedReader2.close();
return arrayListOfStringArrays;
}
}
The input file is:
1 2
3 4
5 6
The output is:
noOfTokens = 2
toRead = 1 2
tokenIndex = 0
productString[0] = 1
tokenIndex = 1
productString[1] = 2
just added an array to the list. the first element is 1
toRead = 3 4
tokenIndex = 0
productString[0] = 3
tokenIndex = 1
productString[1] = 4
just added an array to the list. the first element is 3
toRead = 5 6
tokenIndex = 0
productString[0] = 5
tokenIndex = 1
productString[1] = 6
just added an array to the list. the first element is 5
stringArray.size() = 3
5 // from here on up, it looks like the method works correctly
index of arraylist is 0 and element at index 0 of that array is 5
index of arraylist is 0 and element at index 1 of that array is 6
index of arraylist is 1 and element at index 0 of that array is 5
index of arraylist is 1 and element at index 1 of that array is 6
index of arraylist is 2 and element at index 0 of that array is 5
index of arraylist is 2 and element at index 1 of that array is 6 //these 6 lines only reflect the last line of the input file.
Thanks a mil!

You're only creating a single string array, and reusing that for all lines. So your ArrayList just contains multiple references to the same object. You need to understand that when you call arrayListOfStringArrays.add(productString); that's not adding a copy of the array to the ArrayList - it's just adding a reference. (The value of productString is just a reference, not the array itself.)
Just move this:
String[] productString = new String[noOfTokens];
into the while loop, and all should be well. (In this respect, anyway. You should also be closing your file handles in finally blocks.)

That looks like too much code for me to process. Try this altered fileToStringArray method.
public static ArrayList<String[]> fileToStringArray(File file) throws FileNotFoundException, IOException {
ArrayList<String[]> returnVal = new ArrayList<String[]>();
// Scanner is a nifty utility for reading Files
Scanner fIn = new Scanner(file);
// keep reading while the Scanner has lines to process
while (fIn.hasNextLine()) {
// take the next line of the file, and split it up by each tab
// and add that String[] to the list
returnVal.add(fIn.nextLine().split("\t", -1));
}
return returnVal;
}