Java读取文件的简单代码

网址： http://blog.csdn.net/justinavril/archive/2008/08/06/2775767.aspx
import
java.io.*;

public

class
FileToString {

public

static
String readFile(String fileName) {

String output = ""
;

File file = new
File(fileName);

if
(file.exists()){

if
(file.isFile()){

try
{

BufferedReader input = new
BufferedReader (
new
FileReader(file));

StringBuffer buffer = new
StringBuffer();

String text;

while
((text = input.readLine()) !=
null
)

buffer.append(text +"/n"
);

output = buffer.toString();

}

catch
(IOException ioException){

System.err.println("File Error!"
);

}

}

else

if
(file.isDirectory()){

String[] dir = file.list();

output += "Directory contents:/n"
;

for
(
int
i=
0
; i<dir.length; i++){

output += dir[i] +"/n"
;

}

}

}

else
{

System.err.println("Does not exist!"
);

}

return
output;

}

public

static

void
main (String args[]){

String str = readFile("C:/1.txt"
);

System.out.print(str);

}

}