/*
Write double to a file using DataOutputStream
This Java example shows how to write a Java double primitive value to a file using
writeDouble method of Java DataOutputStream class.
*/
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class WriteDoubleToFile {
public static void main(String[] args) {
String strFilePath = "C://FileIO//WriteDouble.txt";
try
{
//create FileOutputStream object
FileOutputStream fos = new FileOutputStream(strFilePath);
/*
* To create DataOutputStream object from FileOutputStream use,
* DataOutputStream(OutputStream os) constructor.
*
*/
DataOutputStream dos = new DataOutputStream(fos);
double d = 165;
/*
* To write a double value to a file, use
* void writeDouble(double d) method of Java DataOutputStream class.
*
* This method writes specified double to output stream as 8 bytes value.
* Please note that the double value is first converted to long using
* Double.doubleToLongBits method and then long is written to underlying output
* stream.
*/
dos.writeDouble(d);
/*
* To close DataOutputStream use,
* void close() method.
*
*/
dos.close();
}
catch (IOException e)
{
System.out.println("IOException : " + e);
}
}
}
