Java File Read via ByteBuffer readStringInUTF8(DataInput in)

Description

read String In UTF

License

Open Source License

Declaration

public static String readStringInUTF8(DataInput in) throws IOException, UnsupportedEncodingException 

Method Source Code

//package com.java2s;
/*//from  w w  w  . j  ava  2s.  c  o  m
 *
 * This is a simple Content Management System (CMS)
 * Copyright (C) 2010  Imran M Yousuf (imyousuf@smartitengineering.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.io.DataInput;
import java.io.EOFException;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import java.util.Arrays;

public class Main {
    public static String readStringInUTF8(DataInput in) throws IOException, UnsupportedEncodingException {
        int allocationBlockSize = 2000;
        int capacity = allocationBlockSize;
        int length = 0;
        ByteBuffer buffer = ByteBuffer.allocate(allocationBlockSize);
        boolean notEof = true;
        while (notEof) {
            try {
                buffer.put(in.readByte());
                if (++length >= capacity) {
                    capacity += allocationBlockSize;
                    buffer.limit(capacity);
                }
            } catch (EOFException ex) {
                notEof = false;
            }
        }
        String string = new String(Arrays.copyOf(buffer.array(), length), "UTF-8");
        return string;
    }
}

Related

1. readShortByteArray(DataInput in)
2. readString(ByteArrayInputStream bin)
3. readString(ReadableByteChannel channel)
4. readStringFromFile(String path)
5. readStringFromSocketChannel(SocketChannel sc)
6. readToBuffer(final String filename)
7. readToByteArray(String fname)
8. readTwoByteInt(byte[] array, int start)
9. readTxtFromFile(File file)