Java scanner word count It sounds like you need to write yourself a fully fledged scanner of your own as in a hand-written compiler scanner. print("Input name, age, address, city: "); user will This static method does returns the number of occurrences of a string on another string. Here I am able to print the words but not able to count those words. If you need a count of words: for each word on the line, check if the word is in the map, if it is, increment the count. Viewed 567 times 1 Here's the code: Java program - Counts all the words from a text file, and counts frequency of each word. findall (r " \\. Executors; import java. java. Modified 8 years, 6 months ago. 5 and above to access Scanner class In this program, we are counting alphabets just after space. nextLine method to read in names. * * @param source a string to use as source of the match * @param sentence a string that is a substring of source * @return the number of occurrences of sentence on source */ public static int import re # Function to count the number of words in a string def count_words (string): word_count = 0 state = 0 # Initial state is OUT # Traverse all characters of the input string for char in re. hasNextXXX methods. Please help me solve this problem, I don't know how to count the frequency of each word. Scanner; public class MyClass { public static void main(String args[]) { Scanner scanner = new Scanner(System. And to print out the amount of occurrences for a specific letter, you obviously just To write a java program to count the total number of words in a given string, and to print the count of each word in alphabetical order. StringTokenizer; import java. Here is my code: public class wc { public static Implementing OOP in this Java word count program. split(" ") and giving it as argument the space itself, this will return a String array with each different words, then you can simple check its lengthwords. Reload to refresh your session. BufferedReader; import java. Split nextLine into words (head about the read String. atomic. wordCounter I am trying to write a simple code that will give me the word count from a text file. nextLine(); // Gets the next line the user enters (as a String) String[] inputWords = input. If you need to process every character, you can't use an input mechanism that doesn't give them all to you. If you want a count for each word then in java this requires a Map. java. NoSuchElementException at java. Within the loop, you would need to call s. Ask Question Asked 9 years, 6 months ago. This class is used to take user input in Java. How would I implement I have a text file and i want to check - total words count in file - total vowels count in file - total special character in file By using Java 8 Streams. java:838) at java. txt")); int count = 0; while (in. public static int countWords(String text) { if (text == null || text. Stephan Hogenboom. I am writing a program that counts the number of vowels and consonants from a sentence entered by the user. – TA Nguyen. Here is my code so far: import java. The reason the scanner class does this is because scanner. BTW: If you only wanted to count the number of words in your string, why not just count the spaces? You should reset your scanner in your getChar/Words/Lines methods, such as: with different counters. i have been given an problem to solve in class where i need to take in a string and then print out how many numbers are in the string. For each loop in Java with word count. Modified 1 year ago. Ask Question Asked 9 years, 7 months ago. It simply reads the bytes into a buffer and counts the \n characters. for(int w = 0;w < word. println("What is the If you want to only get the first two words (or strings delimited by spaces) you can use the str. It would work anywhere in the do loop, but it's logical to put it after the input was Java word counter: Count words in files using threads or not. When I run the following Can any one tell me that how to use Scanner Class of Java to find the frequency of a word in a sentence. util package used for obtaining the input of the primitive types like int, double, etc. split(" ")), the code will fail if you try to read a file with a different whitespace delimiter. import For the values of the array given by separated with space " "you can try this cool one liner Java 8 & onwards suppported streams based solution:. Then after every word read, you should check if it's in the set, if it isn't, increment the corresponding value in the result map (or add a new entry if it was empty, like you already do) and add the word to the set. rtf. Fastest Way to Read Number of Pages of Docx Files in Java (After Word Rendering)? 0. A list of useful Scanner methods can be found in the table below. The word count should only include words (containing only alphabetic letters, no punctuat Skip to main content. isWhitespace(). – Roalt. ExecutorService; import java. |[\w]", string): # Check for backslash first if char == ' \\ ': continue # If the current character is a word character if char How to search in text file any word and count how many it were repeated? For example test. 1,563 3 3 gold badges 19 19 silver badges 33 33 bronze Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, I have written the below code to calculate the number of words for a given string. Count the integers in a string. println("Please enter a word: "); wordname = scan. So basically, you should be incrementing the counter each time you invoke g = in. If you don't read from the file after this initial Check Guava's Multiset. I used the Scanner class to scan each In Java, Scanner is a class in java. Write a Java program to count the characters in each word in a given sentence? Examples: Input : geeks for geeksOutput :geeks->5for->3geeks->5 Recommended: Please solve it on PRACTICE first, before moving on to the solution. The initial integer indicates how many words will follow. nextLine(); You're creating 2 Neither does it care about writing something (to stdout, to a file, to the database). I updated the example to use hasNextLine/nextLine so For some ideas on how to rewind a Scanner, see Java Scanner "rewind". Scanner; public class Try changing. When you start counting the second word, your Scanner s is already at the end of the file, so it returns you nothing. Printing each word from a paragraph of words in Java while skipping some using Scanner class. Scanner; Note: Use java1. Using Collections, I need to sort and print the words in a given string with its corresponding count in I'm trying to write a program where it inputs/scans a file, logs the words in a HashMap collection, and count's the times that word occurs in the document, with only words over 5 characters being counted. Ask Question Asked 12 years ago. Trying to read 2 words from a file in Java. This uses the wordMap (you dont need wordSet for this solution). a BlockingQueue<String> or BlockingQueue<File> of input files; an AtomicLong; In a loop, you would get the next String/File from the queue, count its words, and increment the AtomicLong by that amount. When I run it I get the actual filename in each "letter" and then the program crashes. Add a counter to count the total words. Calling a scanner the number of times the user inputted in java. Scanner class is one of them. A Java scanner can be created by passing an input source to its constructor. The actual "math" of the code I've already completed, and it seems to be working quite well, but there are some odd house keeping things I need to address in How can I count the words of a sentence given as string? We are allowed to use only the following: for loops, if statemant, while, charAt, length(). The program needs to count word pa I tried to implement the functionality of command "wc file name" in linux. Iterate through the file like this: I tried to implement the functionality of command "wc file name" in linux. Open any . . Read words using scanner in Java. Scanner. Example input: 1 <-- ignore 1 2 3 <-- use this 1 2 <-- ignore java; In Java, counting the occurrences of each character in a string is a fundamental operation that can be done in various ways. Each string is at nextLine. Scanner; public For a start, booleans only hold a true or false value, you can't count with them. A map maps a set of keys to a set of values - something like mapping names to ages. out. Scanner scanner = new Scanner("There are This is the program I need to make, Make a class that represents a file. Exactly. h. split( " " ) but that wouldn't count consecutive spaces. countTokens(). Ask Question Asked 9 years ago. If you call hasNext() on this file, it will return true because there is a next token in the file, in this case the word this. First, turn words into a string with each word separated by "-". The Scanner class can be used to obtain data from the keyboard, files and strings. The Scanner classes next() method can be used for this as shown in the You also need a HashSet<String> in which you store each unique word you've read from the current file. while (sc. This class will have the ability to calculate the number of lines in that file and the ability to search through I'm new to reading text from a file. next() and I am trying to make a program on word count which I have partially made and it is giving the correct result but the moment I enter space or more than one space in the string, the result of word count show wrong results because I but I get java. This produces the sample output you asked for:. Scanner; public class ReadTextFi Solution:; The first line in the main method declares int i and int count and initializes the value of count to 1. counting how many times a word occurs in a document is something like:'. (System. txt" ); Scanner scanner = new Scanner ( file ); int words = 0 ; while ( scanner . First is the test for the end of line is going to cause problems since it usually isn't a single character denoting end of line. txt file? Ask Question Asked 12 years, 11 months ago. Also, it is nearly three times slower than using split(). You switched accounts on another tab or window. ; Then, a new Scanner class object is initialized and a reference variable sc is set to represent the object. Viewed 18k times 1 i wish to read multiple inputs on a single line in java. It only counts how often this java. However, I'm not being able to count the letters in each word. 8 million lines. Creating a Scanner Object. This is not homework. length() ); } } } How to find count of word What I want to do is put each word from this file into a string array that will contain each word, punctuation and all (an apostrophe or a dash would be included as the word). Scanner sc = new java. isEmpty()) or while(!done) depends on how you feed files into the queue: if you The method call count. split(" "); // inputWords[0] is first word, inputWords[1] // is second word etc String validInput = inputWords[0] + " " + inputWords[1]; // I'd suggest you to use Map<String, Set<String>> where key is a word and value is the list of people names that "typed" this word. Store occurences of words in a file and their count,using Scanner. A word is defined as only containing the characters a-z and A- Consider using a Map<String,Integer> for the word then you can implement this to count words and will be work for any number of words. Here is my code: public class wc { public static Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Visit the blog In this example, we will learn to count the number of lines present in a file in Java. Java, Tip 20. io. It uses 2 . Take second word in input. isEmpty()) { return 0; Explore the ins and outs of Java Scanner – from diverse constructors to a multitude of methods. Don't forget to reset the set when you start to read a Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I have created a Java program that goes out and returns search results from various social media API's based on a keyword text file and writes the returned results to another text file. isWhiteSpace * import java. I want to count total number of duplicate word or repeating word in a sentence. AtomicLong; public class Then move the part where the wikipedia article is read out of the inner loop. Scanner scan = new You should better use scanner. String nextLine = blam. next(); } Also, note that you are calling nextLine() prior to initializing your counting I want to count the appearance of each letter of the alphabet from a text file. util. map(str -> str. – The111. Let's see the code of creating Word Character Counter in java. *; import java. The reset() method will reset the value of the scanner's delimiter to There are multiple ways of writing and reading a text file in Java. Commented Mar 3, 2014 at 20:44. Later I tried to use the same scanner . length();w++) because when you set w to 0, obviously, your word. Modified 9 years ago. If split() expects you to write a regular I am trying to write a simple code that will give me the word count from a text file. ) This i what i have done so far import java. Use string methods to find and count vowels in a string? 1. For instance, one way of counting the number of spaces of your string and adding one using lambdas could be: I'm writing a program that'll scan a text file in, and count the number of words in it. Here's a brief overview of all of them: hasNext() - does it Extract words from string using split() method and store them in an array. public int countWords(String w, String fileName) { int count = 0; Scanner scanner = new Scanner(inputFile); scanner You may see it in the source of Scanner. The quick brown fox Hopefully245this---is a quick13947 task&&#%*for you to complete. charAt(0)) If you want to read the rest of the line as File with words "aa bb cc cc aa aa" has 3 unique words. Map; import java. Delve into examples, compare Scanner vs BufferedReader, and grasp import java. Count of of characters matched in sequence of two string. the task is to find the count of words in the given sentence that end with the given suffix I have wrote Java code to count sum of occurrences. I have a Map . 11. split( " " ) ; int countWords = words. I'm writing a Java program that calculates the frequencies of words in an input. hasNextLine ()) { Word Character Counter in Java with Source Code: We can develop Word Character Counter in java with the help of string, AWT/Swing with event handling. You find some code snippets how to do that without a MultiSet. step2:split the string into single word store in a arrays . Also, I need to count the frequency of each words. next(); count++; } and this is the answer to most of the questions i have seen although this counts everything including numbers punctuation etc. Search string frequency & find top 5 most frequent strings. @Holger Actually, wouldn't memory requirements have at multiplied by a lot more at that point? First, from Java 1. a variable that will keep count of the number of guesses, and you will want to increment the count by one each time you ask the user to make a guess. So start with a map declared like: If you're using Java 8, you can try lambdas and functional programming. next();, which returns the token up to white space in other way a word. I have this programming assignment and it is the first time in our class that we are writing code in Java. *; public class Duplicate { You are here: Home » Java » Using Scanner to read words from text file. Second, the Strings that are created need about 72-80 bytes of space, plus their actual length. Well organized and easy to understand Since Java 8 you can count words in this way: wordCnt scanner. next(), it's finding the next word, so each loop is testing whether one word is "aa" or the next word is "bb". hasNext()) { count++; in. Ask Question Asked 10 years ago. Java Program - Word Statistics. If a word is present I'm new to reading text from a file. ) may be How to search in text file any word and count how many it were repeated? For example test. length); Good thing is now you can even use words by indexes. length();w++) to. I need to read spaces (present before string and after String) given as input using Scanner Note : if there is no spaces given in input it should not add space in output How to use Scanner in java to count the number of words seperate by "," from a input . txt:. Here is my code: public class wc { public static Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Java: Count duplicate tokens on line using Scanner object. and strings. In your for loop, keep track of the starting index of each word (e. Each time you call s. replaceAll("[^aeiouAEIOU]",""). split(regex)). The Scanner classes next() method can be used for this as shown in the How do you use the Scanner class in java to store two words or more in a String variable, then the next input in another String variable? 2. strip() ; Is there a way to obtain the number of token in a string obtained by Method Scanner in Java? I mean, i can use s = sc. // Create a buffered reader with 1M buffer Scanner scn = new Scanner (new BufferedReader(new FileReader(fileLocation), 1048576)); I have a program, which users can enter a sentence, and it can split each word into an array. Commented Sep 22, 2010 at 12:32. this is required while dealing with many applications. The code is as follows: import java. As,it is used to create an new object in the scanner class where the variable named is sc. How to mimic transliterate in Java? 0. Rather than in your loop setting each element in the array that maps to a certain character to true, you could simply increment the counter. On the other hand, If you split by space (line. Exception in thread "main" java. java:1347) at WordCount. Can't get counter to work. length ; Loop that array to do your analysis. txt: hi hola hey hi bye hoola hi And if I want to know how many times are . This is awkward. Java provides various ways to read input from the keyboard, the java. in); You can directly use Scanner sc = new Scanner(System. println("enter word"); String I've been coming up against it recently while writing a line counting program in Java for the class I'm taking. For example, Apple is an apple is a phone, the result is that Apple-1; is-2; an-1; a-1; phone-1. util package where it is used for user input. Any help to get it to do letters would be I am trying to create a program as a tutorial for myself for hashmaps. "beautiful". 1. count(); e. for loop print - as many as the word length? 1. In the realm of text processing and analysis, counting words in a string is a fundamental operation. I am trying to write a code which would count the number of words of a certain length in a file. put(words, 1); Since I am mising your Input file i created a dummy that works fine. txt file and check with this program. I'm trying to use the Scanner class to calculate the number of words and lines from a user input, and this is my attempt: import java. As,it is used to create an new java. import java. util package. Whether the loop is while(!queue. 6× faster than the top rated answer when tested on a file with 13. txt files as input and gives words and frequencies as output. words) than it will count words instead. The definition for a word for the assignment is: 'A word is a non-empty string consisting of only of letters (a,. This article will dive deep into various methods As,Scanner class-It belong to java. put(words, 0); with. This import java. But, if the current word count is < 1, don't add anything. ) import java. Ask Question Asked 8 years, 6 months ago. I found a really cool class, that count Pages for Word, Excel and PowerPoint. in)-It is an object creation statement. 2. `import java. public static int countWords(String words I need to find repeated words on a string, and then count how many times they were repeated. txt file. Scanner; public class test1 { Java: Count frequency of specific words and write to file. Approach:Here we have to find out number of words in a sentence an. Commented Dec 6, 2012 at 7:05. Scanner; public class newCounter{ public static void m You can easily count the number of words in a string with the following example: Example String words = "One Two Three Four"; int countWords = words. |[\w]", string): # Check for backslash first if char == ' \\ ': continue # If the current character is a word character if char After you call hasNext() the first time if you don't read from the file hasNext() will always return true. Moreover, you can simply use I have a text file which has the string, - "!- ===== ALL OBJECTS IN CLASS: FENESTRATIONSURFACE:DETAILED =====" in it as you can see in the code below. I have asked my instructor and could not get any help. I've been able to split the phrase into words by using the Tokenizer, and then count and print the amount of words with . File; //to read file import java. Modified 12 years, 8 months ago. Limiting the number of characters in a user Scanner input in String in Java. How would I get around the NoSuchElementException and count the tokens instead of returning them? Here is what I have so far: import java. Scanner; public class WordCount { /** * Scans a string and returns the # of newline characters, words, and * characters in an array object. The user is prompted to enter the number of words and Word count with Java // Main logic File file = new File ( "how_to_live_on_24_hours_a_day. See Documentation for Map. Imagine you have a file with this line in it: this is input. in); System. For example: String input = in. If a digit comes before a word, the word should not be counted. Community Bot. I'm using TextEdit on mac OS which ends in . for( String word : words ) { String w = word. 1 1 1 silver badge. Check if the word is already present in the Map or not. 2014 1 Comment. In the inner loop, count the word occurrences in one article, read out the old sum from the map, add both, and write the new sum back to the map. Now, you can check the first character of String returned by next() is in uppercase or not. split(" "); method. g. I ask the user into text and try to split it into hashmaps and then increase the count if the word repeats. We also need to take care that any special character or number should not be counted as a word. My code below counts the number of vowels but it give me The default whitespace delimiter used by a scanner is as recognized by Character. Reading # of vowels from This program will help you to find and count a specific word or substring from a text file in Java. Modified 12 years, 11 months ago. How do I do this? We are assuming that the file contents may look something like this: it's Stop the malformed yes-man Just random words either separated by returns or . Scanner; public class I'm currently dealing with 20 txt files, the task is to count words frequency for each word, and then output the result into a single txt file For example: word --"news" appears 47 times in 20 I am doing a program to count the length of each word followed by the number of occurrences of that length. Map<String,StringBuilder> files_and_text = new TreeMap<String,StringBuilder>(); String is a I'm attempting to make my program in java count the number of letters in each word. Counting the number of scanner inputs by a user without using a loop. However, only the amount of words is correct, it always prints 0 for the I need to read spaces (present before string and after String) given as input using Scanner Note : if there is no spaces given in input it should not add space in output java. Scanner; public class ReadTextFi String string = "Simple Java Word Count Program"; String[] words = string. next(Scanner. IOException; import System. *; /**Cound lines, characters and words Assumes all non white space are words so even is a word*/ public class ChrCounts I am trying to get into java and i am stuck on a problem which is to count only words in a java file using a scanner. *; public final class CountLetters { public static void main (String[] args) { Scanner sc = new Scanner(System. Java Scanner Input String. Using the Scanner class in Java is the easiest Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about I am trying to take input from a user, and print the amount of lines, words, and characters in a text file. in); // create and attach the scanner System. in)-As, it an standard input stream,means keyborad when the program is executing. ,z,A,. length. Hint, if it is counting words you want, then Scanner. Tested on 1200 txt files. println(str1. Add a I am having one problem to count words in Java. Viewed 7k times 2 My input file look like this: 1,2,3,4,5,6 3,4,5,6,7,8 5,6,7,8,9,9 1,2,3,4,5,6 I want to count the number of word in a column and the number of rows so Solution:; The first line in the main method declares int i and int count and initializes the value of count to 1. Counting words and lines using scanner Scanner (Java) Hot I am attempting to calculate the average word length of user input in Java in a very simplistic way. My code below counts the number of vowels but it give me I tried to implement the functionality of command "wc file name" in linux. of words of length 1 are 1. next() method Scanner deliminates I am having one problem to count words in Java. */ public class WordFrequencyCounter { /** * Reads a list of words from the user and outputs the words and their frequencies. You should better use scanner. The first time I called Just add one incrementation into your do while loop count = count + 1; as the last command. Right now I have it counting words, not letters. Other method is to count the number of spaces instead, and then number Is there a way to obtain the number of token in a string obtained by Method Scanner in Java? I mean, i can use s = sc. nextInt(); So here is what your code should probably be doing Java Count Words IndexOf. */ public class I have been asked to write a program that checks if the team name is present in the text file I had created on my computer and also say how many times it has been repeated on you could make the counting of the words a method of the dictionary where you build a new map with only a count for the words encountered in the new text file(s) and return My task is to get the word frequency of this file: test_words_file-1. What if your Runnable took two arguments:. You will generate a decent amount of garbage for the GC with large files. Follow edited May 23, 2017 at 11:58. I am confused as to enter a line in java i have to use nextInt() function This is a word count application using the implementation of map and reduce functions. split() method). Improve this question. The Java Scanner import java. Follow edited Jun 13, 2019 at 10:27. In this case you're going to require an int as opposed to a boolean. Alternatively sometimes you want to read text word by word (for example to count the occurrence of different words). 3. - IMUSARAZA/Word-Counter-Java If you want count vowel Using regular expressions you can try. As the speed of I/O is slow, you may want to increase the buffer size and read from file with less frequency. next(), store the result in a variable, then check that with your two words. So basically, if the input string is this: String s = "House, House, House, Dog, Dog, Dog, Dog"; I nee You are on the right path but you will need to alter the collections storing the data. split("\\s"). Also why r u doing inFile. By that I It's easier to parse a string. In your case you want to map words to counts. If I am using Scanner in Java, how do I count the elements on the line so I know not to process the input if it doesn't have the required elements or continue to next line? All are integers. public static void main(String[] args) Scanner in = new Scanner(System. Note that String is immutable, so when you create String token = "" outside the while statement, that is a String by itself that will never be used again. util package and hence the import statement in the beginning is stated to import the Using Scanners, you will end up spawning a lot of objects for every line. Skip to main content try using java. Improve this answer. \$\endgroup\$ – Each time you call s. g. This is the program I need to make, Make a class that represents a file. This process involves identifying the frequency of each character in the input string and displaying it in a readable format. ConcurrentHashMap; import java. split("\\s+"); System. This solution is about 3. Often you need to read a file line by line. So in order to access those tokens, you have to save them in a list: I want to count the appearance of each letter of the alphabet from a text file. length and this will give you the exact number. util package and hence the import statement, in the beginning, is stated to import the By calling str. . Comparator; import java. How to count the number of occurrences of Im trying to write a method that returns the number of words from the "words" parameter that have at least the min" but no more than the "max c"haracters. First split on spaces. Read scanner input java. It is a very simple program. Iterate over the word array. Contribute to leventov/java-word-count development by creating an account on GitHub. Their description starts with 'The traditional Java idiom for e. You are here: Home » Java » Using Scanner to read words from text file. This program works fine, step1:input the string. Because the front of the input doesn't change. throwFor(Scanner. just a loop over each char, check if its a new word etc, increase counts , use Charater. IF the text file contains this string I need to read it from the text file and then print it out again. /** * Returns the number of appearances that a string have on another string. Like this (would require modification for case insensitive) public Map<String,Integer> words_count = new HashMap<String,Integer>(); //read your line (you will have to determine if this line should be import re # Function to count the number of words in a string def count_words (string): word_count = 0 state = 0 # Initial state is OUT # Traverse all characters of the input string for char in re. First I had to get rid of the punctuation in all of the words. sc=new Scanner(System. I need to count each word the phrase has and then count how many letters each word has. util package and hence the import statement in the beginning is stated to import the Your solution does not look that bad. Here is my code: You signed in with another tab or window. split(" "); for (String str1 : letters) { System. I tested this on Amazon Web Services (AWS) through a double instance cluster First you need to split your String, presumably on ";" - then you can whack that into a TreeSet to sort it and make then words unqiue. println("?"); String str = s. Scanner; public I want to get a string count any letter in the string how many time it's appeared in the string,and print the letter and the number So that what i did: import java. hasNextLine()) { sc. Scanner; Then you go: Scanner s = new Scanner(System. 0. You may change the creation of your Scanner with below code instead. String[] words = input. You The output you described and the code contradict with the sample output you gave. First word in the string would be words[0], second word would be words[1] and so on. Java word count program. next() will pickup the next word for you. Scanner class is part of the java. public class GFG { // Method 1 - getWords() // Reading out words from the file and In Java, counting the Please Enter String to Count Words = abc working at abc company Total Number of Words = 5 Count Total Words using functions. Scanner; import java. 7 onwards, substring() creates a copy of the needed chars. Trying to read 2 words from a file in \t will match tabs, rather than spaces and should also be referred to with a double slash: \\t. using scanner to evaluate words in a string. :-) I was hoping with that he could piece together the rest. length() is returning the length of each word because the loop is assigning each word to variable count. Scanner; /** * A class to demonstrate a method for counting word frequencies in a list of words. length; Write a Java program to count number of words and characters in a text or string, the following java program has been written in multiple ways along with sample outputs as well. stream. This code is for counting the number of words in Write a Java method to count all the words in a string. But if you want to make changes in the above program, you could simply do a simple check statement before the main if condition that if the I == length-1, because this means that you are at the last character and there is nothing after this, for this Read words using scanner in Java. File; import java. Counting words in a string in JAVA. Scanner(System. For statement This is StackOverflow you will have three tokens, This, is and StackOverflow and you can use String. println("Words Count: " + words. But for initialization i would replace. lines(). For example: Enter a String :I love my work The word count is - No. Java scanner and count not working. This class will have the ability to calculate the number of lines in that file and the ability to search through The scanner object was used earlier in the code to first read some ints. Words will be separated by one or more spaces. Viewed But what I am currently struggling to do is create a method where I can count the recurrence of each name in the file. Your code should go into a method with the following signature. Java Count Words IndexOf. In the inner loop, count the word occurrences in one article, read out the old sum from the map, add How do you use the Scanner class in java to store two words or more in a String variable, then the next input in another String variable? 2. in object, which represents the standard input stream, a File object, which The best way to count the amount of words in a String String phrase is simply to get a String array from it using the String method split String[] words = phrase. scanner; counting; string-length; Share. Arrays; import java. Ex: System. Non-letter characters (spaces, punctuation, digits, etc. NoSuchElementException. Structures and functions public class WordTypeCount A simple way to count words in a string in Java is to use the StringTokenizer class: assertEquals(3, new StringTokenizer("three blind mice"). The function of a scanner is to deliver you tokens and ignore the white space. (ArrayList<String> fn, ArrayList<String> ln) throws IOException { Scanner kb = new Scanner(System. Scanner; public class WordSent I need to count the words, lines, and characters in the text file. Share. FileReader; import java. It counts wrong, every time it gives me the number 297, even there're more than 20 000 strings. HashMap; import java. step3 :return the length of the arrays Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company (I will eventually want to enhance the program to output on what line of the file the word is. printStackTrace(); One of the simplest ways to count words in a string is by using the split() method of the String class. Map<String,StringBuilder> files_and_text = new TreeMap<String,StringBuilder>(); String is a As,Scanner class-It belong to java. Start by stripping away whitespace. So, here is how you can define your collection: Map<String, Set<String>> word2people = HashMap>();` How do I get it to output the rest of the words? import java. Fastest word count in Java. (This variable name is very confusing. Java scanner count lines in file. If not, add it to the map. charAt(0) on this String. in) since you have already imported Scanner class. next(); String[] letters = words. Nikem Nikem Count Method Java. You have a couple of issues in here. You signed in with another tab or window. Unfortunately, Scanner cannot do token counting without consuming these tokens from the input. With help of Apache POI. split(inside your for loop, you are needlessly splitting the entire string over and over again. The answer to that question: use two variables. frequency. Moreover there are many functions in Java that you can use here to do this very easily like using string tokenizer, etc. You could play with the buffer size, but on my machine, anything above 8KB didn't make the code faster. The alphabet can be of lower case or upper case. i want output as a Map in a I am writing a program that counts the number of vowels and consonants from a sentence entered by the user. The input source can be a System. You signed out in another tab or window. TreeMap; /** * Count number of word in file in Are you supposed to input a number of lines, and when it's finished, count the number of lines and the number of words in that input? Your functions takes the same type of Source of WordTypeCount. Modified 3 years, 4 which was how to compare two words returned in sequence by the scanner. The code I have written takes as input just a single string and not a whole sentence and I want a whole sentence to be taken as input: import java. Scanner class in Java is found in the java. Modified 8 years, 8 months ago. equals() in file your Scanner so that would equal a Scanner object not a string. public int countWords(String w, String fileName) { int count = 0; Scanner scanner = new Scanner(inputFile); scanner Declare a new scanner for your count words method, the problem lies under s. int count = word. We are inserting a space at the beginning since people don't start a sentence with space. From this line I have to scan the file, count the number of times a word appears (regardless of capitalization), and then output it to a formatted file. countTokens()); assertEquals(4, new One of the simplest solutions would be to create a Map, store words as keys and the number of occurrences as values: for (String country : COUNTRY_NAMES) { . Hot Network Firstly, you need to have import java. Getting page count in Word doc is not working using java. ( Java ) Ask Question Asked 12 years, 8 months ago. ) If you want the number of words in the sentence, you need the size of the count_words array, which is count_words. I've got a task for which I need to print the amount of words which are in a file. I want to make a program to count characters, words and lines from an input text and stops when read a point(. Java Program to find a specific word in a text file and print its count. Stack Overflow import java. For example: How are you? would print: Proportion of 3-letter words: 100% (3 words) In your for loop, keep track of the starting index of each word (e. in); String words = sc. in); The Java Word Frequency Counter is a program that reads a list of words from the user and outputs the frequencies of each word. Scanner has many hasNextXXX methods that can be used to validate input. Now, you can check the first character of String returned by next() is in Then move the part where the wikipedia article is read out of the inner loop. Modified 9 (unless it is an exercise for you), do not use BufferedReader and But if you want to get the whole sentence you will have to call scanner like an iterator and then get each next token bu calling scanner. store it in a variable). Input the string: The quick brown fox jumps over the lazy dog. However, it does not account for whitespaces. Count pages/lines in a word file that was edited with docx4j. nextLine(); f. concurrent. Scanner; // Class // To find maximum occurrences. next(); it reads the next word in your buffer and discard the previous ones, so after you called your longest word method, the scanner buffer has been used up. There are several ways to read a plain text file in Java Please enter in a message: aaat is is this are that "is" is an English word "is" is an English word "this" is an English word "are" is an English word "that" is an English word the I am trying to count the number of times each word is in the array in java and then display it, but I can't figure out how I am using a scanner to add to the array and then trying to If you scan for whitespace (e. The Java Word Frequency Counter is a program that I want to count the number of words from my html page and using hashmap i want to print the words and the occurences of the word from the html page Java code public class CountWords { public I am creating a simple program that counts the number of words, lines and total characters (not including whitespace) in a paper. If t is a String that has no whitespace in it, and the Scanner you are passing in still has the default delimiter set, then this should work. length(); Approch 2: first count the word length and then Scanner in = new Scanner(new FileReader(dir + "/input5. Whether you're developing a word processor, analyzing text data, or creating a simple word counter tool, understanding how to count words in a string using Java is an essential skill. This command counts the number of: lines words bytes in a file. Viewed 2k times Apart from what is causing your current issue, if you just want to count the number of word occurence in a sentence, there's a simple way without using the loops. Counting for only words in a file using a scanner Java. Java Scanner get char. Follow answered May 24, 2016 at 13:37. This Program to Count the number of Words in a String is There are three ways to approach this problem: Call next() on the Scanner, and extract the first character of the String (e. When I run the following I have to count the number of unique words from a text document using Java. for(int w = 0;w > word. You could call s. nextLine() to obtain an input line as a string. Basically the output should be something like this: Write your code in the file WordCount. So in order to access those tokens, you have to save them in a list: Is there a way to count the number of words in a string input at the start of a program and use that number as number of command line arguments in a public static void main (String[] args) program? I want a scanner that will ask the user to input a character, however if more than one character is entered it should prompt the user again for only one character. Since you're scanning the whole string anyway you can build a full character count and do any number of lookups, all for the same big-Oh cost (n): Character counter in Java. For example, if the minimum length given is 4, your program should only count words that are at least 4 letters long. So you would want to maintain a counter, i. e. String: "aa-bb-cc-cc-aa-aa-" Get the first word: "aa", set Java program to find the duplicate words in a string; Java Program to find the frequency of characters; Java Program to find the largest and smallest word in a string; Java Program to Overview of Scanner. Whenever you hit a new space, print out the word using substring with the number appended to it. *; public class WordCount { public static I've created a simple scanner to count the number of strings in a . nextLine(); // gets what the user typed Java - Counting the vowels in string. length() is greater than Java Scanner. Solution:; The first line in the main method declares int i and int count and initializes the value of count to 1. ykqz ugmllr bdko fceqsr mhglns lbsb akmu fpiu xocuzt luer