Count Words in Java: Explanation & Practice

Problem summary

Write a program that counts the number of words in a sentence.

Starter code

public class Main {
    public static void main(String[] args) {
        String sentence = "Java is a programming language"; // Test case 1
        
        // Count words
        // Print: Word count: <result>
    }
}

Expected output and test cases

• 5 words in sentence

  Word count: 5

• Single word

  Word count: 1

• Three words

  Word count: 3

Hints

1. Split by space: .split(" ")
2. Count array length after split
3. Handle multiple spaces with .split("\\s+")

Related Strings exercises

• Practice String Palindrome in Java
• Practice Count Vowels in Java
• Practice First Non-Repeating Character in Java

Practice all Strings exercises · Run this idea in the Java compiler