Java Long Number Create toLong(byte[] bytes, int offset)

Description

to Long

License

Apache License

Declaration

private static long toLong(byte[] bytes, int offset) 

Method Source Code

//package com.java2s;
/** I re-ported the (slightly modified) HBase's Bytes code here
 * to avoid dependencies on HBase in the common package of DML.
 * The copyright is included.// ww  w . j  a v a  2s. com
 *
 *
 * Copyright 2010 The Apache Software Foundation
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

public class Main {
    public static final int SIZEOF_LONG = Long.SIZE / Byte.SIZE;

    private static long toLong(byte[] bytes, int offset) {
        if (offset + SIZEOF_LONG > bytes.length) {
            throw new RuntimeException("Cannot decode long from the buffer");
        }
        long l = 0;
        for (int i = offset; i < offset + SIZEOF_LONG; i++) {
            l <<= 8;
            l ^= bytes[i] & 0xFF;
        }
        return l;
    }
}

Related

1. toLong(byte[] bytes)
2. toLong(byte[] bytes)
3. toLong(byte[] bytes, boolean bigEndian)
4. toLong(byte[] bytes, int index)
5. toLong(byte[] bytes, int index)
6. ToLong(byte[] bytes, int offset)
7. toLong(byte[] bytes, int offset)
8. toLong(byte[] bytes, int offset)
9. toLong(byte[] data)