package com.why;

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

public class Test {
    public static final int KB = 1024;
    public static final int DEFAULT_BUFFER_SIZE = 8 * KB;

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

        for (int aa = 0; aa < 100; aa++) {
            final int x = aa;
            new Thread() {
                public void run() {
                    File f = new File("d:\\aaaa.txt");

                    OutputStream out = null;

                    try {
                        out = new BufferedOutputStream(new FileOutputStream(f));
                    } catch (FileNotFoundException e1) {
                        // TODO Auto-generated catch block
                        e1.printStackTrace();
                    }

                    byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
                    for (int i = 0; i < buffer.length; i++) {
                        buffer[i] = (byte) x;
                    }
                    for (int i = 0; i < 100; i++) {
                        try {
                            out.write(buffer, 0, buffer.length);
                        } catch (IOException e1) {
                            // TODO Auto-generated catch block
                            e1.printStackTrace();
                        }
                    }

                    try {
                        out.close();
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    System.out.println("结束"+x);
                }
            }.start();
        }

        try {
            Thread.sleep(1000000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

    }

}