Java Reader Read All readAllCharsAndClose(Reader reader)

Description

read All Chars And Close

License

Apache License

Declaration

public static String readAllCharsAndClose(Reader reader) throws IOException 

Method Source Code

//package com.java2s;
/*//from   w w w  .  j a  v a 2s  .c o  m
 * Copyright (C) 2014-2016 Markus Junginger, greenrobot (http://greenrobot.org)
 *
 * 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.Closeable;
import java.io.IOException;

import java.io.Reader;

public class Main {
    private static final int BUFFER_SIZE = 8192;

    public static String readAllCharsAndClose(Reader reader) throws IOException {
        try {
            return readAllChars(reader);
        } finally {
            safeClose(reader);
        }
    }

    public static String readAllChars(Reader reader) throws IOException {
        char[] buffer = new char[BUFFER_SIZE / 2];
        StringBuilder builder = new StringBuilder();
        while (true) {
            int read = reader.read(buffer);
            if (read == -1) {
                break;
            }
            builder.append(buffer, 0, read);
        }
        return builder.toString();
    }

    /**
     * Closes the given resource (e.g. stream, reader, writer, etc.) inside a try/catch.
     * Does nothing if stream is null.
     */
    public static void safeClose(Closeable closeable) {
        if (closeable != null) {
            try {
                closeable.close();
            } catch (IOException e) {
                // Silent
            }
        }
    }
}

Related

1. readAll(Reader reader)
2. readAll(Reader reader)
3. ReadAll_Variant1(Reader rd, Writer wr)
4. readAllChars(Reader reader)
5. readAllChars(Reader reader)
6. readAllCharsFromReader(Reader reader)
7. readAllFrom(final Reader reader)
8. readAllLines(final BufferedReader br)
9. readAllQuietly(Reader reader)