CIS 260 Binary01.java

Code

/*
    Binary01.java
    David Klick
    2005-01-26

    Writes and then reads binary data in a file.
*/

import java.io.*;

public class Binary01 {
    public static void main(String[] args) throws IOException {
        int n = 72;
        double x = 1.2, y = 3.4, z = 5.6;
        String filename = "Binary01.dat";

        // write data to file
        DataOutputStream ofile = new DataOutputStream(
            new FileOutputStream(filename));
        ofile.writeInt(n);
        ofile.writeDouble(x);
        ofile.writeDouble(y);
        ofile.writeDouble(z);
        ofile.close();

        // read data from file
        DataInputStream ifile = new DataInputStream(
            new FileInputStream(filename));
        System.out.println("Data read from file:");
        System.out.println(ifile.readInt());
        System.out.println(ifile.readDouble());
        System.out.println(ifile.readDouble());
        System.out.println(ifile.readDouble());
        ifile.close();
    }
}