writebufferedtest.java

Java课堂练习

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

public class WriteBufferedTest {
        
    /**
     * Creates a new instance of <code>WriteBufferedTest</code>.
     */
    public WriteBufferedTest() {
    }
    
    /**
     * @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");
         BufferedOutputStream  bfs_out=new BufferedOutputStream(fs_out);
         DataOutputStream out=new DataOutputStream(bfs_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);
        }
    }
}