Java tutorial
import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; public class Main { public static void main(String[] args) throws Exception { float f = 1.23456f; FileOutputStream out = new FileOutputStream("test.txt"); ObjectOutputStream oout = new ObjectOutputStream(out); oout.writeFloat(f); oout.writeFloat(1234.56789f); oout.flush(); oout.close(); ObjectInputStream ois = new ObjectInputStream(new FileInputStream("test.txt")); System.out.println(ois.readFloat()); System.out.println(ois.readFloat()); ois.close(); } }