// Calculating term frequency
System.out.println("Please enter the required word :");
Scanner scan = new Scanner(System.in);
String word = scan.nextLine();
String[] array = word.split(" ");
int filename = 11;
String[] fileName = new String[filename];
int a = 0;
for (a = 0; a < filename; a++) {
try {
System.out.println("The word inputted is " + word);
File file = new File(
"C:\\Users\\user\\fypworkspace\\TextRenderer\\abc" + a
+ ".txt");
System.out.println(" _________________");
System.out.print("| File = abc" + a + ".txt | \t\t \n");
for (int i = 0; i < array.length; i++) {
int totalCount = 0;
int wordCount = 0;
Scanner s = new Scanner(file);
{
while (s.hasNext()) {
totalCount++;
if (s.next().equals(array[i]))
wordCount++;
}
System.out.print(array[i] + " ---> Word count = "
+ "\t\t " + "|" + wordCount + "|");
System.out.print(" Total count = " + "\t\t " + "|"
+ totalCount + "|");
System.out.printf(" Term Frequency = | %8.4f |",
(double) wordCount / totalCount);
System.out.println("\t ");
}
}
} catch (FileNotFoundException e) {
System.out.println("File is not found");
}
}
This is my code to calculate the word count, total words and the term frequency of a text file containing text. The problem is i need to access the variable wordcount and totalcount outside of the for loop. But changing the place to declare the variable wordcount and totalcount changes the results too making it not accurate. Can someone help me on the variables so that i can get accurate results and also access the variables outside of the for loop ?
Simply declare them outside the loop, but keep assigning them to 0 inside the loop:
int totalCount;
int wordCount;
for ( ... ) {
totalCount = 0;
wordCount = 0;
...
}
// some code which uses totalCount and wordCount
Related
At the moment my code is only giving me the first matching result. The user inputs their desired room price and at the moment it will only display the first match. In the case the user inputs '60' to the console it should display 3 results. I imagine i'll need another forloop and if statement after it prints to the console but not sure how to execute
public static void secondMain() {
BufferedReader reader;
var lines = new ArrayList<String>();
var rooms = new ArrayList<Room>();
Room selectedRoom = null;
try {
reader = new BufferedReader(new FileReader("rooms.txt"));
String line = reader.readLine();
lines.add(line);
while (line != null) {
line = reader.readLine();
lines.add(line);
}
reader.close();
for (int i = 0; i < lines.size() - 1; i++) {
String[] words = lines.get(i).split(" ");
var room = new Room();
room.roomNum = Integer.parseInt(words[0]);
room.roomType = (words[1]);
room.roomPrice = Double.parseDouble(words[2]);
room.hasBalcony = Boolean.parseBoolean(words[3]);
room.hasLounge = Boolean.parseBoolean(words[4]);
room.eMail = (words[5]);
rooms.add(room);
}
var searchRoomPrice = input.nextDouble();
for (int i = 0; i < rooms.size(); i++) {
if (rooms.get(i).roomPrice == searchRoomPrice) {
selectedRoom = rooms.get(i);
break;
}
}
System.out.println("Room Number: " + selectedRoom.roomNum);
System.out.println("Room Type: " + selectedRoom.roomType);
System.out.println("Room Price: " + selectedRoom.roomPrice);
System.out.println("Balcony: " + selectedRoom.hasBalcony);
System.out.println("Lounge: " + selectedRoom.hasLounge);
System.out.println("Email: " + selectedRoom.eMail);
System.out.println("-------------------");
} catch (Exception e) {
e.printStackTrace();
}
}
Any other information needed feel free to ask
If you only want to print the information move the print commands inside the loop and remove the break i.e.
for(int i = 0; i < rooms.size(); i++){
if(rooms.get(i).roomPrice == searchRoomPrice){
selectedRoom = rooms.get(i);
System.out.println("Room Number: " + selectedRoom.roomNum);
System.out.println("Room Type: " + selectedRoom.roomType);
System.out.println("Room Price: " + selectedRoom.roomPrice);
System.out.println("Balcony: " + selectedRoom.hasBalcony);
System.out.println("Lounge: " + selectedRoom.hasLounge);
System.out.println("Email: " + selectedRoom.eMail);
System.out.println("-------------------");
}
}
You could also save all the objects in a list with the first loop and then in a second loop iterate over the list and print the information i.e.
List<Room> roomList = new ArrayList<Room>();
for(int i = 0; i < rooms.size(); i++){
if(rooms.get(i).roomPrice == searchRoomPrice){
roomList.add(rooms.get(i));
}
}
for(Room room : roomList){
System.out.println("Room Number: " + room.roomNum);
System.out.println("Room Type: " + room.roomType);
System.out.println("Room Price: " + room.roomPrice);
System.out.println("Balcony: " + room.hasBalcony);
System.out.println("Lounge: " + room.hasLounge);
System.out.println("Email: " + room.eMail);
System.out.println("-------------------");
}
I notice 2 things:
You are using a break; here:
if(rooms.get(i).roomPrice == searchRoomPrice){
selectedRoom = rooms.get(i);
break;
}
So you are stopping the loop after the first match.
Here:
for (int i = 0; i < lines.size() - 1; i++)
Is there a reason to use that minus 1?
My code pulls from three text files in order to identify the date/time of the highest value in a list (and display the prior and following five values). Unfortunately, after exporting it as a runnable JAR from Eclipse (I'm including all three text files in the export), it produces absolutely no output. I tried Google and Stack Overflow, but can't seem to find the source of the error. Do you think it's more likely to be an issue with my code, or something I'm doing in Eclipse (e.g. when exporting the file)?
Here is how I'm exporting this as a Runnable Jar File
import java.util.Scanner;
import java.io.FileNotFoundException;
import java.io.File;
import java.util.Arrays;
import java.util.Collections;
public class FindTheMaxGeiger {
public static void main (String[] args) {
String [] dateStamp = getDate("4_22_18_dates.txt");
String [] timeStamp = getTime("4_22_18_times.txt");
try {
Scanner scanner1 = new Scanner(new File("4_22_18_radiation.txt"));
int radCtr = 0;
while (scanner1.hasNextLine()) {
radCtr++;
scanner1.nextLine();
}
Scanner scanner2 = new Scanner(new File("4_22_18_radiation.txt"));
int [] radiation = new int [radCtr]; //create the radiation array
int i = 0;
while(scanner2.hasNextLine()){
radiation[i++] = scanner2.nextInt();
}
int max = getMax(radiation);
System.out.println("Date Counts per Minute");
System.out.println("-------------------------------");
System.out.println(dateStamp[max-5]+ " " + timeStamp[max-5] + " " + radiation[max-5]);
System.out.println(dateStamp[max-4]+ " " + timeStamp[max-4] + " " + radiation[max-4]);
System.out.println(dateStamp[max-3]+ " " + timeStamp[max-3] + " " + radiation[max-3]);
System.out.println(dateStamp[max-2]+ " " + timeStamp[max-2] + " " + radiation[max-2]);
System.out.println(dateStamp[max-1]+ " " + timeStamp[max-1] + " " + radiation[max-1]);
System.out.println(dateStamp[max]+ " " + timeStamp[max] + " " + radiation[max] + "(This is the max)");
System.out.println(dateStamp[max+1]+ " " + timeStamp[max+1] + " " + radiation[max+1]);
System.out.println(dateStamp[max+2]+ " " + timeStamp[max+2] + " " + radiation[max+2]);
System.out.println(dateStamp[max+3]+ " " + timeStamp[max+3] + " " + radiation[max+3]);
System.out.println(dateStamp[max+4]+ " " + timeStamp[max+4] + " " + radiation[max+4]);
System.out.println(dateStamp[max+5]+ " " + timeStamp[max+5] + " " + radiation[max+5]);
}
catch (FileNotFoundException e){
}
}
//here we call the method to find the max
public static String[] getDate(String file) {
//step 1:
// count the number of lines in the file
//step 2 - create the array and copy the elements in
int ctr = 0;
try {
Scanner s3 = new Scanner(new File(file));
while (s3.hasNextLine()) {
ctr++;
s3.nextLine();
}
String[] dateStamp = new String[ctr]; //creation
Scanner s4 = new Scanner(new File(file));
for (int i = 0; i < ctr; i++) {
dateStamp[i] = s4.next();
}
return dateStamp;
}
catch (FileNotFoundException e){
}
return null;
}
//get time
public static String[] getTime(String file) {
//step 1:
// count the number of lines in the file
//step 2 - create the array and copy the elements in
int ctr = 0;
try {
Scanner s5 = new Scanner(new File(file));
while (s5.hasNextLine()) {
ctr++;
s5.nextLine();
}
String[] timeStamp = new String[ctr]; //creation
Scanner s6 = new Scanner(new File(file));
for (int i = 0; i < ctr; i++) {
timeStamp[i] = s6.next();
}
return timeStamp;
}
catch (FileNotFoundException e){
}
return null;
}
public static int getMax(int[] inputArray){
int maxValue = inputArray[0];
int maxLoc = 0;
for(int i=1;i < inputArray.length;i++){
if(inputArray[i] > maxValue){
maxValue = inputArray[i];
maxLoc = i;
}
}
return maxLoc;}}
as mentioned the files are now compressed and inside the jar and don't live on the file system
use something like InputStream in = this.getClass().getClassLoader().getResourceAsStream("SomeTextFile.txt");
look here for how to convert the inputStream to a String. or it seems that you can use a Scanner directly on the stream. you will need to know the char encoding
I wrote a program for my Computer Science class where it reads a file and imports the data and then just adds the numbers but it seems to be adding an extra addition sign.
import java.io.*; //necessary for File and IOException
import java.util.*; //necessary for Scanner
public class Tester
{
public static void main( String args[] ) throws IOException
{
Scanner sf = new Scanner(new File("/Volumes/DVLUP Flash/Numbers.txt"));
int maxIndx = -1; //-1 so when we increment below, the first index is 0
String text[] = new String[1000]; //To be safe, declare more than we
while(sf.hasNext( ))
{
maxIndx++;
text[maxIndx] = sf.nextLine( );
//System.out.println(text[maxIndx]); //Remove rem for testing
}
sf.close();
for(int j =0; j <= maxIndx; j++)
{
Scanner sc = new Scanner(text[j]);
}
String answer = ""; //We will accumulate the answer string here.
int sum; //accumulates sum of integers
for(int j = 0; j <= maxIndx; j++)
{
Scanner sc = new Scanner(text[j]);
sum = 0;
answer = "";
while(sc.hasNext())
{
int i = sc.nextInt();
answer = answer + i + " + ";
sum = sum + i;
}
//sc.next();
answer = answer + " = " + sum;
System.out.println(answer);
}
}
}
The output is
12 + 10 + 3 + 5 + = 30
18 + 1 + 5 + 92 + 6 + 8 + = 130
2 + 9 + 3 + 22 + 4 + 11 + 7 + = 58
There's an extra after the last number, how do I fix that?
After the last iteration you are having an "extra" plus sign because that´s the way you are printing it. You are ending the String with a + as it can be seen in your while loop.
to change it either add the + before the value as
if(sc.hasNext()) {
int i = sc.nextInt();
answer = i + "";
sum += i;
while(sc.hasNext())
{
i = sc.nextInt();
answer = answer + " + " + i;
sum = sum + i;
}
}
Or if you use Java 8 you could use the StringJoiner as
StringJoiner joiner = new StringJoiner(" + ");
while(sc.hasNext())
{
i = sc.nextInt();
// This automaticly includes a " + " between the values.
joiner.add(String.valueOf(i));
sum = sum + i;
}
After
while(sc.hasNext())
{
int i = sc.nextInt();
answer = answer + i + " + ";
sum = sum + i;
}
put
answer = answer.substring(0, answer.length()-1);
One option would be to conditionally prepend a plus sign before appending each number in any case other than the first number:
answer = "";
while(sc.hasNext()) {
int i = sc.nextInt();
if (answer.length() > 0) {
answer += " + ";
}
answer = answer + i;
sum = sum + i;
}
I have a text file, and I want to find the middle word of the whole file and print the number of characters it has. I can do this for one line:
System.out.println("'" + str[tok / 2] + "'");
But I don't know how to point to a certain line. Here is all of my code:
import java.io.*;
import java.text.*;
import java.util.*;
public class AmendClassify {
public static void main(String[] args) {
try {
System.out.println("Please enter the file name:");
Scanner sc = new Scanner(System.in);
String file = sc.next();
file = file + ".txt";
Scanner s = new Scanner(new FileReader(file));
System.out.println("You are scanning '" + file + "'");
PrintWriter output = new PrintWriter(new FileOutputStream("output.txt"));
double lineNum = 0;
double wordCount = 0;
double charCount = 0;
int tok = 0;
String str[] = null;
DecimalFormat df = new DecimalFormat("#.#");
String line = null;
while (s.hasNextLine()) {
line = s.nextLine();
lineNum++;
str = line.split((" "));
tok = str.length;
for (int i = 0; i < str.length; i++) {
if (str[i].length() > 0) {
wordCount++;
}
}
charCount += (line.length());
}
double density = (charCount / wordCount);
System.out.println("'" + str[tok / 2] + "'"); // middle word of the 1st/last line
gap();
System.out.println("Number of lines: " + lineNum);
System.out.println("Number of words: " + wordCount);
System.out.println("Number of characters: " + charCount);
gap();
System.out.println("The DENSITY of the text is: " + df.format(density));
System.out.println();
int critical;
System.out.println("Do you want to alter the critical value(Y/N)");
String answer = sc.next();
if (answer.equals("y") || answer.equals("Y")) {
System.out.println("Please enter a value: ");
critical = sc.nextInt();
} else {
critical = 6;
}
//So...
if (density > critical) {
System.out.println("NAME: '" + file + "'" + ", DENSITY: " + df.format(density) + ", TYPE: " + "Heavy");
} else {
System.out.println("NAME: '" + file + "'" + ", DENSITY: " + df.format(density) + ", TYPE: " + "Light");
}
System.out.print("--FINISHED--");
s.close();
output.close();
sc.close();
} //end of try
catch (FileNotFoundException e) {
System.out.println("Please enter a valid file name");
}
} // end of main
public static void gap() {
System.out.println("------------------------------");
}
}
A text file I have used to test is
Hello my name is Harry. This line contains 83 characters, 15 words, and 1 line(s).
This is the second line.
This is the third line.
This is the fourth line.
Since this looks like a homework assignment I'd recommend reading the entire file into a String and then removing all new-line characters with replaceAll() if need be (depending how you read the entire file into a String). You then would effectively have a single line ... so your existing code would work (taking into account that the middle word would actually be the word to the left of the middle if the file has an even number of words).
Note that this is not an optimal solution though. Don't use it at work.
Here is the main problem:
java.util.NoSuchElementException: No line found
at java.util.Scanner.nextLine(Unknown Source)
at ExamAnalysis.main(ExamAnalysis.java:21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at edu.rice.cs.drjava.model.compiler.JavacCompiler.runCommand(JavacCompiler.java:271)
The program compiles and runs. It's just that I am either getting the java.util.NoSuchElementException along with my five jother errors with (answer.charAt(i) == char) near the bottom. Here is my program:
import java.io.*;
import java.util.Scanner;
class ExamAnalysis
{
public static void main(String [] args) throws FileNotFoundException
{
Scanner keyboard = new Scanner(System.in);
System.out.println("Please type the correct answers to the exam questions, one right after the other: ");
String answers = keyboard.nextLine();
System.out.println("Where is the file with all the student responses? ");
String responses = keyboard.nextLine();
Scanner read = new Scanner(new File(responses));
while (read.hasNextLine())
{
for (int i = 0; i <= 10; i++)
{
responses = read.nextLine();
int p = 1;
p += i;
System.out.println("Student " + p + " responses: " + responses.substring(0,10));
}
System.out.println("Thank you for the data on 9 students. Here's the analysis: ");
resultsByStudents(responses, answers);
analysis(responses);
}
}
public static void resultsByStudents(String responses, String answers)
{
System.out.println ("Student # Correct Incorrect Blank");
System.out.println ("~~~~~~~~~ ~~~~~~~ ~~~~~~~~~ ~~~~~");
int student = 0;
int correct = 0;
int incorrect = 0;
int blank = 0;
for (int i = 0; i <= 9; i++)
{
for (int j = 0; j <= responses.length(); j++)
{
if ((responses.charAt(j)) == answers.charAt(j))
correct++;
else if ((responses.charAt(j)) != answers.charAt(j))
incorrect++;
else
blank++;
}
System.out.println(student + " " + correct + " " + incorrect + " " + blank);
student++;
}
}
public static void analysis(String responses)
{
System.out.println("QUESTION ANALYSIS (* marks the correct response)");
System.out.println("~~~~~~~~~~~~~~~~~");
//stores the percentage of each choice chosen
double A = 0;
double B = 0;
double C = 0;
double D = 0;
double E = 0;
double X = 0;
// tallys every variable chosen per question
for (int i = 0; i <= 10; i++) // go through all the questions
{
for (int j = 0; j <= responses.charAt(i); j++) //go through all the student responses
{
// variable that are being tallied
int chooseA = 0;
int chooseB = 0;
int chooseC = 0;
int chooseD = 0;
int chooseE = 0;
int chooseBlank = 0;
//variables take percentage of choices that have been chosen from each student
A = chooseA/9;
B = chooseB/9;
C = chooseC/9;
D = chooseD/9;
E = chooseE/9;
X = chooseBlank/9;
// variables that will print the asterisk with certain character of correct answer
String a = "A";
String b = "B";
String c = "C";
String d = "D";
String e = "E";
String blank = "blank";
if (responses.charAt(j) == A)
chooseA++;
else if (responses.charAt(j) == B)
chooseB++;
else if (responses.charAt(j) == C)
chooseC++;
else if (responses.charAt(j) == D)
chooseD++;
else if (responses.charAt(j) == E)
chooseE++;
else
chooseBlank++;
System.out.println("Question #" + i);
if (answers.charAt(i) == 'A') a = "A*"; // answers cannot be resolved(I already made it a global variable in my main method.)
else if (answers.charAt(i) == 'B') b = "B*";// answers cannot be resolved
else if (answers.charAt(i) == 'C') c = "C*";// answers cannot be resolved
else if (answers.charAt(i) == 'D') d = "D*";// answers cannot be resolved
else if (answers.charAt(i) == 'E') e = "E*";// answers cannot be resolved
System.out.println(a + " " + b + " " + c + " " + d + " " + e + " " + blank);
System.out.println (chooseA + " " + chooseB + " " + chooseC + " " + chooseD + " " + chooseE + " " + chooseBlank );
System.out.println (A + " " + B + " " + C + " " + D + " " + E + " " + X);
}
}
}
}
while (read.hasNextLine())
{
for (int i = 0; i <= 10; i++)
{
responses = read.nextLine();
int p = 1;
p += i;
System.out.println("Student " + p + " responses: " + responses.substring(0,10));
}
System.out.println("Thank you for the data on 9 students. Here's the analysis: ");
resultsByStudents(responses, answers);
analysis(responses);
}
}
Your logic here is confusing you. read.nextLine(); "Advances this scanner past the current line and returns the input that was skipped. This method returns the rest of the current line, excluding any line separator at the end. The position is set to the beginning of the next line."
So you are saying, does it have a line? If so, read the next 10...well...11 lines, which isn't what you want. You don't know if there are 11 lines past this point. Don't know what that text file looks like, but you will want to restructure this part to either say, "While it has a next line", or "Read 11 lines"
Remove the for loop may resolve the issue. You are checking only once by using while(hasNextLine() ) but calling read.nextLine() 10 times in for loop.
for (int i = 0; i <= 10; i++)
{
responses = read.nextLine();
.......
}
int i = 0;
int numberOfStudents = 9;
while (i < numberOfStudents && read.hasNextLine()){
responses = read.nextLine();
i++;
System.out.println("Student " + i + " responses: " + responses.substring(0,10));
}
System.out.println("Thank you for the data on "+ numberOfStudents +" students. Here's the analysis: ");
resultsByStudents(responses, answers);
analysis(responses);
i < numberOfStudents : makes the required number of inserts
read.hasNextLine() : checks if there is input from console. If not the program waits for input.
for (int i = 0; i <= 10; i++)
count from 0 -> 10 = 11 students