Java 8 Stream API Interview Questions: Count the Number of Digits in a String in Java 8 Streams API

Q61. Count the Number of Digits in a String using The Java 8 Streams API
In this video, learn how to count the number of digits in a string using the powerful Java 8 Streams API. We'll walk through a simple yet effective program that takes a sample input string and calculates the total digit count using functional programming techniques.

Code Overview:
Input: "Hello12345"
Output: Digit count: 5
Key Concepts Covered:
✅ Using chars() method of String in Java.
✅ Filtering characters with Character::isDigit.
✅ Counting the digits using count() method in Streams API.

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