DataOutputStream writeDouble(double) in Java

writeDouble(double): This method is available in the java.io.DataOutputStream class of Java.

Syntax:

void java.io.DataOutputStream.writeDouble(double v) throws IOException

This method converts the double argument to a long using the doubleToLongBits method in class Double and then writes that long value to the underlying output stream as an 8-byte quantity, high byte first.

Note: If no exception is thrown, the counter written is incremented by 8.

Parameters: One parameter is required for this method.

v: a double value to be written.

Returns: NA

Throws:

IOException - if an I/O error occurs.

Approach

Java

import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class DataOutputStreamwriteDouble {
    public static void main(String[] args) throws IOException {

        FileOutputStream file = 
             new FileOutputStream("D:\\hello.txt");
        DataOutputStream data = new DataOutputStream(file);

        double v = 1001.9191;
        data.writeDouble(v);
        System.out.println("Successfully writes");
        data.close();

    }
}

Output:

Successfully writes