Read float from file using DataInputStream : DataInputStream « File « Java Tutorial

1. Java Tutorial
2. File
3. DataInputStream

import java.io.DataInputStream;
import java.io.FileInputStream;

public class Main {

  public static void main(String[] args) throws Exception {
    FileInputStream fin = new FileInputStream("C:/Float.txt");
    DataInputStream din = new DataInputStream(fin);

    float f = din.readFloat();
    System.out.println("float : " + f);
    din.close();
  }
}