Java Program to Count Total Words in a String

Write a Java Program to Count Total Words in a String with an example. In this count number of words in a string example, we first used for loop to iterate strTWords. Inside the loop, to keep the code simple, we assigned (TWord_ch = strTWords.charAt(i)) each character to TWord_ch. Next, we used the If statement.

We check whether the character is empty or tab space within the first if condition (TWord_ch == ‘ ‘ )|| TWord_ch == ‘\t’). If true, we increment the totalWords value. Next, we print the totalWords as the result.

import java.util.Scanner;

public class CountTotalStrWords1 {
	private static Scanner sc;
	public static void main(String[] args) {
		String strTWords;
		int i, totalWords;
		totalWords = 1;
		char TWord_ch;
		
		sc= new Scanner(System.in);

		System.out.print("\nPlease Enter String to Count Words =  ");
		strTWords = sc.nextLine();
		
		for(i = 0; i < strTWords.length(); i++)
		{
			TWord_ch = strTWords.charAt(i);
			if((TWord_ch == ' ' ) || TWord_ch == '\t') {
				totalWords++;
			}
		}		
		System.out.println("\nTotal Number of Words  =  " + totalWords);
	}
}

Java Program to Count Total Words in a String using if else

In this Java program, first, check whether the given text is empty. If not, we used the Java split function to split strTWords and assigned them to a string array. Later, we print the length of a string array in Java.

import java.util.Scanner;

public class CountTotalStrWords2 {
	private static Scanner sc;
	public static void main(String[] args) {
		String strTWords;
		
		sc= new Scanner(System.in);

		System.out.print("\nPlease Enter Text =  ");
		strTWords = sc.nextLine();
		
		if(strTWords == null || strTWords.isEmpty()) {
			System.out.println("\nPlease enter the Non-Empty String");

		}
		else {
			String[] words = strTWords.split("\\s+");
			System.out.println("\nTotal Number of Words =  " + words.length);
		}
	}
}

Please Enter Text =  learn java programming

Total Number of Words =  3

Using StringTokenizer

The below mentioned program accepts the text and count the Total number of Words in a String using StringTokenizer. Refer to the Java Programs.

import java.util.Scanner;
import java.util.StringTokenizer;

public class CountTotalStrWords3 {
	private static Scanner sc;
	public static void main(String[] args) {
		String strTWords;
		
		sc= new Scanner(System.in);

		System.out.print("\nPlease Enter Words =  ");
		strTWords = sc.nextLine();
		
		if(strTWords == null || strTWords.isEmpty()) {
			System.out.println("\nPlease enter the Non-Empty String");

		}
		else {
			StringTokenizer tk = new StringTokenizer(strTWords);
			System.out.println("\nTotal Number of Words  =  " + tk.countTokens());
		}
	}
}

Please Enter Words =  abc working at abc company

Total Number of Words  =  5

Using functions

This Program to Count the number of Words in a String is the same as the above. Here, we separated the string word count logic using Java functions.

import java.util.Scanner;

public class CountTotalStrWords4 {
	private static Scanner sc;
	public static void main(String[] args) {
		String strTWords;
		int totalWords;
		
		sc= new Scanner(System.in);

		System.out.print("\nPlease Enter Text =  ");
		strTWords = sc.nextLine();
		
		totalWords = 	CountTotalWords (strTWords);	
		System.out.println("\nTotal Number of Words  =  " + totalWords);
	}
	public static int CountTotalWords (String strTWords) {
		int i, totalWords;
		totalWords = 1;
		
		for(i = 0; i < strTWords.length(); i++)
		{
			if((strTWords.charAt(i) == ' '  && strTWords.charAt(i - 1) != ' ')
					|| strTWords.charAt(i) == '\t') 
			{
				totalWords++;
			}
		}
		return totalWords;
	}
}

Please Enter Text =  learn java programming at tutorial gateway

Total Number of Words  =  6

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