Java Program to Count Words in a Given String

• Java Program to Count Words in a Given String using loop
• Java Program to Count Words in a String using Split Method

Java Program to Count Words in a Given String using loop

We will write a Java program to count the number of words in a given string using the following steps:

1. Initialize a variable to store the String for which we want to count the number of words
2. Initialize a variable to store the count of words
3. Iterate through the input string and count the number of spaces
4. Increment the count of words by 1
5. Display the count of words in the input string

public class CountWordsInString {
    public static void main(String[] args) {
        String str = "Hello World Java Programming";
        int count = 1;
        
        for (int i = 0; i < str.length(); i++) {
            if (str.charAt(i) == ' ' && str.charAt(i + 1) != ' ') {
                count++;
            }
        }

        System.out.println("Number of words in the string: " + count);
    }
}

Number of words in the string: 4

Java Program to Count Words in a String using Split Method

In this method, we will use the split method to count the number of words in a given string. The split method is used to split a string into an array of substrings based on a delimiter. We will use the split method to count the number of words in a given string. We will follow the following steps to count the number of words in a string using the split method:

1. Initialize a variable to store the String for which we want to count the number of words
2. Initialize a variable to store the count of words
3. Split the input string into an array of substrings based on the space delimiter
4. Get the length of the array to get the count of words
5. Display the count of words in the input string

public class CountWordsInString {
    public static void main(String[] args) {
        String str = "Hello World Java Programming";
        String[] words = str.split(" ");
        int count = words.length;
        System.out.println("Number of words in the string: " + count);
        }
}

Number of words in the string: 4