使用BufferedReader读取文件

王朝other·作者佚名  2008-05-31
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/*

* Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.

* All rights reserved. Software written by Ian F. Darwin and others.

* $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian EXP $

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

* 1. Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reprodUCe the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

*

* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''

* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED

* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS

* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

* POSSIBILITY OF SUCH DAMAGE.

*

* Java, the Duke mascot, and all variants of Sun's Java "steaming coffee

* cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,

* pioneering role in inventing and promulgating (and standardizing) the Java

* language and environment is gratefully acknowledged.

*

* The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for

* inventing predecessor languages C and C++ is also gratefully acknowledged.

*/

import java.io.BufferedReader;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.IOException;

import java.io.InputStreamReader;

/**

* Read a file and print, using BufferedReader and System.out

*/

public class CatFile {

public static void main(String[] av) {

CatFile c = new CatFile();

if (av.length == 0)

c.process(new BufferedReader(new InputStreamReader(System.in)));

else

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

try {

c.process(new BufferedReader(new FileReader(av[i])));

} catch (FileNotFoundException e) {

System.err.println(e);

}

}

/** print one file, given an open BufferedReader */

public void process(BufferedReader is) {

try {

String inputLine;

while ((inputLine = is.readLine()) != null) {

System.out.println(inputLine);

}

is.close();

} catch (IOException e) {

System.out.println("IOException: " + e);

}

}

}

 
 
 
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