writeunbufferedtest.java

Java课堂练习

/**
 * @(#)WriteUnbufferedTest.java
 *
 *
 * @author 
 * @version 1.00 2007/11/15
 */
import java.io.*;

public class WriteUnbufferedTest {
        
    /**
     * Creates a new instance of <code>WriteUnbufferedTest</code>.
     */
    public WriteUnbufferedTest() {
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
        try {
        long start=System.currentTimeMillis();
        FileOutputStream  fs_out=new FileOutputStream("4.txt");
        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);
        }
    }
}