如何从文本文件中读取信息？

[cart55free99]

有一个文本文件test.txt 如何从他中间读取文本信息呢？

import java.io.*;
public class Java_2{
public static void main (String[] args){
byte buf[] = new byte[5];
int len= 0 ,c1 = 0,c2=0;
//*********Found**********
try{
//*********Found**********
FileInputStream in = ________________("test.txt");//这里填什么？是不是new FileInputStream
while((len =in.read(buf,0,5))>0){
for(int i = 0; i < len;i++)
if(buf[i]>= '0' && buf[i] <= '9'){
c1 ++;
}
else
if((buf[i]>= 'a' && buf[i] <= 'z')||buf[i]>= 'A' && buf[i] <= 'Z')
c2++;
if(len <5) break;
}
in.close();
}catch(Exception e ){}
System.out.println("数字数是 " + c1 + "，字母数是 " + c2);
}
}

[yanliang_xt]

是的。。

[windforcecn]

new FileInputStream(new File("test.txt"))

[justinavril]

new FileInputStream(new File("test.txt"))

[yanliang_xt]

两种：

1、new FileInputStream("test.txt");

2、new FileInputStream(new File("test.txt"));