Java Long Number From toLongValue(byte... bytes)

Description

to Long Value

License

Apache License

Declaration

public static final long toLongValue(byte... bytes) 

Method Source Code

//package com.java2s;
/*//from   www.jav  a  2 s .c  o  m
 * Copyright 2013 Lyor Goldstein
 * 
 * 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.
 */

public class Main {
    public static final long toLongValue(byte... bytes) {
        return toLongValue(bytes, 0, bytes.length);
    }

    public static final long toLongValue(byte[] buf, int offset, int len) {
        if (len < 8) {
            throw new NumberFormatException("Not enough data for value: " + len);
        }

        long result = 0L;
        for (int index = 0, pos = offset; index < 8; index++, pos++) {
            result = ((result << Byte.SIZE) & 0xFFFFFFFFFFFFFF00L) | (buf[pos] & 0x00FF);
        }

        return result;
    }
}

Related

1. toLongs(int[] array)
2. toLongs(Long[] values)
3. toLongTime()
4. toLongTimestamp(Object cell)
5. toLongUnsigned(int intValue)
6. toLongValue(final Object o)
7. toLongValue(final String candidateString)
8. toLongValue(Object value)