DataOutputStreamDemo.java

//Java program to demonstrate DataOutputStream
// This program uses try-with-resources. It requires JDK 7 or later.

import java.io.*;

public class DataOutputStreamDemo {
    public static void main(String args[]) throws IOException {
        // writing the data using DataOutputStream
        try (DataOutputStream dout = new DataOutputStream(new FileOutputStream("test.txt"))) {
            dout.writeDouble(1.1);
            dout.writeInt(55);
            dout.writeBoolean(true);
            dout.writeChar('4');
        } catch (FileNotFoundException ex) {
            System.out.println("Cannot Open the Output File");
            return;
        }

        // reading the data back using DataInputStream
        try (DataInputStream din = new DataInputStream(new FileInputStream("test.txt"))) {
            double a = din.readDouble();
            int b = din.readInt();
            boolean c = din.readBoolean();
            char d = din.readChar();
            System.out.println("Values: " + a + " " + b + " " + c + " " + d);
        } catch (FileNotFoundException e) {
            System.out.println("Cannot Open the Input File");
            return;
        }
    }
}