import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

//正常情況

//main()方法中第一個read()和和第二個read();是可以順利執行完的

//public class Demo {

//static BufferedOutputStream bo = null;

//static BufferedInputStream bi = null;

//static File in = null;

//public static void main(String[] args) {

//in = new File("d:\\ThreadPrint.java");

//reset();

//read();//第一個

//System.out.println("---");

//reset();

//read();//第二個

//}

//public static void read() {

//int len = 0;

//byte[] by = new byte[1024 * 9];

//try {

//while ((len = bi.read(by)) != -1) {

//System.out.println(new String(by, 0, len));

//}

//} catch (IOException e) {

//e.printStackTrace();

//}

//

//}

重置bi輸入流的方法

//public static void reset() {

//try {

//bi = new BufferedInputStream(new FileInputStream(in));

//} catch (FileNotFoundException e) {

//e.printStackTrace();

//}

//}

//

//}

//出問題情況

//main()方法中第一個read()是可以順利執行完的,第二個read()讀取的結果是空;

public class Demo {

static BufferedOutputStream bo = null;

static BufferedInputStream bi = null;

static File in = null;

public static void main(String[] args) {

in = new File("d:\\ThreadPrint.java");

try {

bi = new BufferedInputStream(new FileInputStream(in));

} catch (FileNotFoundException e) {

e.printStackTrace();

}

read();// 第一個

System.out.println("---");

read();// 第二個

}

//

public static void read() {

int len = 0;

byte[] by = new byte[1024 * 9];

try {

while ((len = bi.read(by)) != -1) {

System.out.println(new String(by, 0, len));

}

} catch (IOException e) {

e.printStackTrace();

}

}

}

總結

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