Java tutorial
import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; public class MainClass { public static void main(String[] args) throws IOException { DataOutputStream out2 = new DataOutputStream(new BufferedOutputStream(new FileOutputStream("Data.txt"))); out2.writeDouble(3.14159); out2.writeUTF("Square root of 2"); out2.close(); DataInputStream in5 = new DataInputStream(new BufferedInputStream(new FileInputStream("Data.txt"))); System.out.println(in5.readDouble()); System.out.println(in5.readUTF()); } }