Java File Read via ByteBuffer readLong(InputStream input)

Description

read Long

License

Apache License

Declaration

public static long readLong(InputStream input) throws IOException 

Method Source Code

//package com.java2s;
/*//  w ww.  ja va2s .  co  m
 * $Id: IOUtil.java,v 1.2 2008-06-09 11:32:37 concentus Exp $
 * 
 * Copyright 2005 Sebastian Hasait
 * 
 * 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.IOException;
import java.io.InputStream;

import java.nio.ByteBuffer;

public class Main {
    private static final int LONG_LEN = 8;

    public static long readLong(InputStream input) throws IOException {
        byte[] longBytes = new byte[LONG_LEN];
        int r = input.read(longBytes, 0, LONG_LEN);
        if (r != LONG_LEN) {
            throw new IOException("Bytes missing: read " + r + ", expected " + LONG_LEN);
        }
        return ByteBuffer.wrap(longBytes).getLong();
    }
}

Related

1. readIntLittleEndian(InputStream in)
2. readIntoBuffer(RandomAccessFile file, int offset, int size)
3. readJsonFromFile(String path)
4. readLargeFile(File file)
5. readLong(byte[] src, int pointer)
6. readLong(InputStream is)
7. readLong(InputStream is, ByteOrder bo)
8. readLong(RandomAccessFile raFile)
9. readLTriad(byte[] triad)