Java IO Tutorial - Java DataOutputStream .writeFloat (float v)

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Syntax

DataOutputStream.writeFloat(float v) has the following syntax.

public final void writeFloat(float v)   throws IOException

Example

In the following code shows how to use DataOutputStream.writeFloat(float v) method.

/*w  w w .  ja  va2 s  . c o m*/

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

public class Main {
  public static void main(String[] args) throws IOException {
    float[] fbuf = { 12.34f, 23.34f, 45.56f, 67.78f, 12.55f, 77.88f };

    FileOutputStream fos = new FileOutputStream("c:\\test.txt");
    DataOutputStream dos = new DataOutputStream(fos);
    for (float f : fbuf) {
      dos.writeFloat(f);
    }
    dos.flush();
    InputStream is = new FileInputStream("c:\\test.txt");
    DataInputStream dis = new DataInputStream(is);

    while (dis.available() > 0) {
      float c = dis.readFloat();
      System.out.print(c);
    }
  }
}

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