Java IO Tutorial - Java DataOutputStream .writeDouble (double v)

• Back to DataOutputStream  ↑

Syntax

DataOutputStream.writeDouble(double v) has the following syntax.

public final void writeDouble(double v)   throws IOException

Example

In the following code shows how to use DataOutputStream.writeDouble(double v) method.

//from  w w  w .  ja  v  a2 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 {
    double[] dbuf = { 12.34, 34.45, 67.78, 88.88, 66.66, 77.33 };

    FileOutputStream fos = new FileOutputStream("c:\\test.txt");
    DataOutputStream dos = new DataOutputStream(fos);

    for (double d : dbuf) {
      dos.writeDouble(d);
    }
    dos.flush();

    InputStream is = new FileInputStream("c:\\test.txt");
    DataInputStream dis = new DataInputStream(is);

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

• Back to DataOutputStream  ↑