writeunbufferedtest.java

Java程序设计技巧与开发实例附书源代码。

import java.io.*;

public class WriteUnbufferedTest
{
  public static void main(String args[])
  {
    try
    {
      long start = System.currentTimeMillis();
      FileOutputStream fs_out = new FileOutputStream("sample.dat");
      DataOutputStream out = new DataOutputStream(fs_out);
      for (int i = 0; i < 100000; i++)
      {
        out.writeDouble(Math.random());
      }
      out.close();
      long stop = System.currentTimeMillis();
      System.out.println("Time passed: " + (stop - start));
    }
    catch (IOException ioe)
    {
      System.out.println(ioe);
    }
  }
}