TestFileInputStream.java

TestFileInputStream.java

package com.ylkj0401;

import java.io.FileInputStream;                       //字节型输入inputstream

import java.io.FileNotFoundException;

import java.io.IOException;

public class TestFileInputStream {

public static void main(String[] args){

int b = 0;
FileInputStream in = null;
try {
in = new FileInputStream("E:\\yingli.txt");
} catch (FileNotFoundException e) {

e.printStackTrace();
System.out.println("找不到指定文件");
System.exit(-1);
}

long num = 0;
try {
while((b = in.read() )!= -1){                        //b = in.read() )!= -1 的意思是：循环输出，b不等于-1即意味着没有读到最后一个字节
System.out.println((char)b);
num++;

}
in.close();
System.out.println();
System.out.println("共读取了" + num + "个字节");
} catch (IOException e) {

e.printStackTrace();
System.out.println("文件读取错误");
System.exit(-1);
}

}

}