Java File Read by Charset fileToString(final Path path, final Charset charset)

Description

Reads a file and returns it as a string.

License

Apache License

Declaration

public static String fileToString(final Path path, final Charset charset) 

Method Source Code

//package com.java2s;
/*// w w w  .j  a  v a  2  s  . c om
 * Copyright 2017 Crown Copyright
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.BufferedReader;

import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;

public class Main {
    private static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;

    /**
     * Reads a file and returns it as a string.
     */
    public static String fileToString(final Path path) {
        return fileToString(path, DEFAULT_CHARSET);
    }

    /**
     * Reads a file and returns it as a string.
     */
    public static String fileToString(final Path path, final Charset charset) {
        final StringBuilder sb = new StringBuilder();

        try {
            if (Files.isRegularFile(path)) {
                try (BufferedReader reader = Files.newBufferedReader(path, charset)) {
                    final char[] buffer = new char[4096];
                    int len;
                    while ((len = reader.read(buffer, 0, buffer.length)) != -1) {
                        sb.append(buffer, 0, len);
                    }
                }
            }
        } catch (final IOException ex) {
            throw new RuntimeException(ex);
        }

        return sb.toString();
    }
}

Related

1. copyFileWithEolConversion(File inFile, File outFile, Charset charset)
2. detectCharset(File f, String[] charsets)
3. doTranseFileCharset(File srcFile, File destFile, String srcCharsetName, String destCharsetName)
4. fileContent(File file, Charset charset)
5. fileToString(final File f, final Charset c)
6. findPattern(File file, Charset charset, String patternString)
7. fixture(String filename, Charset charset)
8. getContent(File file, String charsetName)
9. getEOL(File file, Charset charset)