import java.io.*;

public class ReadBinaryData {
    public static void main(String[] args) {
        // Step 1: Declare InputStream and DataInputStream
        InputStream fileStream = null;
        DataInputStream dataStream = null;

        try {
            // Step 2: Create FileInputStream to read from binary file
            fileStream = new FileInputStream("data1.txt");

            // Step 3: Wrap FileInputStream with DataInputStream
            dataStream = new DataInputStream(fileStream);

            // Step 4: Read data using DataInputStream methods
            int number = dataStream.readInt();           // Reads 4 bytes as int =42
            double value = dataStream.readDouble();      // Reads 8 bytes as double = 3.14159
            String message = dataStream.readUTF();       // Reads UTF-encoded string = pvpsit

            // Step 5: Display the read values
            System.out.println("Integer: " + number);
            System.out.println("Double: " + value);
            System.out.println("Message: " + message);

        } catch (IOException e) {
            System.out.println("Error reading file: " + e.getMessage());
        } finally {
            // Step 6: Close streams
            try {
                if (dataStream != null) dataStream.close();
                if (fileStream != null) fileStream.close();
            } catch (IOException e) {
                System.out.println("Error closing streams: " + e.getMessage());
            }
        }
    }
}