Example4.java

import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.IOException;

public class Example4 {
	public static void main(String[] args) {
		String filePath = "data.txt";

		int bufferSize = 100; // number of bytes

		try (FileInputStream fis = new FileInputStream(filePath);
				ByteArrayOutputStream baos = new ByteArrayOutputStream()) {
			byte[] buffer = new byte[bufferSize];
			int bytesRead;

			while ((bytesRead = fis.read(buffer)) != -1) {
				baos.write(buffer, 0, bytesRead);
				// do something with each chunk
			}

			byte[] fileContent = baos.toByteArray();
			System.out.println(new String(fileContent));

		} catch (IOException e) {
			System.out.println("An error ocurred reading the file: " + e.getMessage());
		}

	}