这两天论坛好卡,发个IO流的练习贴

今天还好点,能登陆了.但是好慢,昨天压根登不上来 , 啥子情况? 在改版?

/*
IOStream Test
*/
import java.io.*;
public class IOStreamDemo {
public static void main(String[] args) throws IOException {
//fileCopy_1();
//fileCopy_2();
transStream();
}
/*复制一个文本文件*/
public static void fileCopy_1() throws IOException {
long start = System.currentTimeMillis();
BufferedReader bufr = new BufferedReader(new FileReader("TransStreamDemo.java"));
BufferedWriter bufw = new BufferedWriter(new FileWriter("CopyTSD.TXT"));
String line = null;
while((line = bufr.readLine()) != null) {
bufw.write(line.toUpperCase());
bufw.newLine();
bufw.flush();
}
bufr.close();
bufw.close();
long end = System.currentTimeMillis();
System.out.println("耗时:" + (end-start) + "毫秒");
}
/*复制一个非文本文件*/
public static void fileCopy_2() throws IOException {
long start = System.currentTimeMillis();
BufferedInputStream bufis = new BufferedInputStream(new FileInputStream("1.exe"));
BufferedOutputStream bufos = new BufferedOutputStream(new FileOutputStream("2.exe"));
byte[] buf = new byte[1024*1024];
int len = 0;
while((len=bufis.read(buf)) != -1) {
bufos.write(buf);
}
bufis.close();
bufos.close();
long end = System.currentTimeMillis();
System.out.println("耗时:" + (end-start) + "毫秒");
}
/*接收键盘录入,打印到控制台*/
public static void transStream() throws IOException {
BufferedReader bufr = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bufw = new BufferedWriter(new OutputStreamWriter(System.out));
String line = null;
while((line=bufr.readLine()) != null) {
if(line.equals("over"))
break;
bufw.write(line);
bufw.newLine();
bufw.flush();
}
bufr.close();
bufw.close();
}
}

复制代码

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这两天论坛好卡,发个IO流的练习贴

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