What is BufferReader ? why is it resource ?

simpler way to understand `BufferedReader` as a resource:

### What is `BufferedReader`?

`BufferedReader` is a tool in Java that helps read text from sources like files or keyboard input efficiently. It's like a helper that manages how data is fetched from these sources to your program.

### Why is it a Resource?

It's called a resource because:

- **Efficient Reading**: It reads chunks of text at once, which is faster than reading character by character.

- **Uses System Resources**: It needs memory and system connections to do its job (like opening files or connecting to input streams).

### How to Use it Safely?

When you're done using `BufferedReader`, you should:

- **Close it**: This releases the memory and connections it used. If you forget, it can waste resources or cause errors.

### Example:

```java

import java.io.BufferedReader;

import java.io.FileReader;

import java.io.IOException;

public class BufferedReaderExample {

    public static void main(String[] args) {

        try (BufferedReader br = new BufferedReader(new FileReader("example.txt"))) {

            String line;

            while ((line = br.readLine()) != null) {

                System.out.println(line);

            }

        } catch (IOException e) {

            e.printStackTrace();

        }

    }

}

```

### Explanation:

- **Reading File**: `BufferedReader` reads lines from a file (`example.txt`).

- **Automatic Closing**: `try-with-resources` ensures `BufferedReader` is closed after use, preventing resource leaks.

### In Short:

`BufferedReader` is a tool for reading text efficiently. Treat it like a valuable resource by closing it when you're done to avoid problems. This way, your Java programs run smoothly and use resources wisely.