import java.io.* ;
public class DataWriter {
   
   /** Method: An entry point for program execution */
   public static void main(String[] args) throws IOException  {
      double[] data = {7.36E22, 1738, 3340, 1.67, 3.80E5} ;
      
      // instantiate and prepare character stream objects
      File outFile = new File("moon.txt") ;
      FileOutputStream fos = new FileOutputStream(outFile) ;
      DataOutputStream dos = new DataOutputStream(fos) ;
                                
      // write the array contents into an output file
      try {
         for (int i=0; i < data.length; i++) {        
            dos.writeDouble(data[i]) ;
         }
         dos.close() ;               // close file
      } catch (IOException e) {
         System.out.println("File write failur") ;
      }
   }
}