Java FileInputStream Read ReadFileAsUtf8String(String filePath)

Description

Read File As Utf String

License

Open Source License

Declaration

public static String ReadFileAsUtf8String(String filePath) throws IOException 

Method Source Code

//package com.java2s;
/*******************************************************************************
 The MIT License (MIT)//from   w  w w  .  ja v  a 2 s .  com
    
 Copyright (c) 2014 Alexander Borsuk <me@alex.bio> from Minsk, Belarus
    
 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.File;
import java.io.FileInputStream;

import java.io.IOException;

public class Main {
    public static String ReadFileAsUtf8String(String filePath) throws IOException {
        final File file = new File(filePath);
        final long fileLength = file.length();
        if (fileLength > Integer.MAX_VALUE) {
            throw new IOException(filePath + " size is too large: " + fileLength);
        }
        final byte[] buffer = new byte[(int) fileLength];
        final FileInputStream istream = new FileInputStream(file);
        try {
            if (fileLength != istream.read(buffer)) {
                throw new IOException("Error while reading contents of " + filePath);
            }
        } finally {
            istream.close();
        }
        return new String(buffer, "UTF-8");
    }
}

Related

1. readFileAsBinary(File file)
2. readFileAsInputStream(File file)
3. readFileAsInputStream(String fileName)
4. readFileAsProperties(File file)
5. readFileAsResource(String fileName)
6. readFileAtOnce(final File file)
7. readFileBinaries(File file)
8. readFileBinary(String filename)
9. readFileBytes(File file)