Java Program to Count Character Frequency in a String | HashMap Interview Question

In this video, you'll learn how to write a Java program to count the frequency of each character in a string using a HashMap. This is a frequently asked Java interview question that tests your understanding of maps, loops, and string manipulation.

✅ What you'll learn:
- Using HashMap to store character counts
- How to remove spaces from a string
- Iterating through a string using toCharArray()
- Java logic to solve real interview questions
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