Java BufferedReader Create getBufferedReader(final File file)

Description

get Buffered Reader

License

Open Source License

Declaration

public static BufferedReader getBufferedReader(final File file) 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * ENdoSnipe 5.0 - (https://github.com/endosnipe)
 * //from   ww  w.j  a v  a  2s .  c  o m
 * The MIT License (MIT)
 * 
 * Copyright (c) 2012 Acroquest Technology Co.,Ltd.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 ******************************************************************************/

import java.io.BufferedReader;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;

import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.StringReader;

public class Main {

    public static BufferedReader getBufferedReader(final File file) {
        if (file == null) {
            throw new IllegalArgumentException("file can't be null");
        }

        if (file.exists() == false) {
            throw new IllegalArgumentException("file dosen't exist : " + file.getAbsolutePath());
        }

        try {
            InputStreamReader reader = new InputStreamReader(new FileInputStream(file));
            return new BufferedReader(reader);
        } catch (FileNotFoundException ex)
        // CHECKSTYLE:OFF
        {
            // Do nothing.
        }
        // CHECKSTYLE:ON
        return null;
    }

    public static BufferedReader getBufferedReader(final InputStream is) {
        if (is == null) {
            throw new IllegalArgumentException("inputStream can't be null");
        }

        return new BufferedReader(new InputStreamReader(is));
    }

    public static BufferedReader getBufferedReader(final String contents) {
        if (contents == null) {
            throw new IllegalArgumentException("contents can't be null");
        }

        StringReader reader = new StringReader(contents);
        return new BufferedReader(reader);
    }
}

Related

1. createBufferedReader( InputStream inputStream, String strCodepage)
2. getBufferedReader(File file)
3. getBufferedReader(File file)
4. getBufferedReader(File file, String charset)
5. getBufferedReader(File file, String encoding)
6. getBufferedReader(final InputStream inputstream)
7. getBufferedReader(InputStream inputStream)
8. getBufferedReader(InputStream inputStream, String charsetName)
9. getBufferedReader(InputStream stream, String charset)