//package com.nowjava;
/**
来 自
nowjava - 时代Java
**/
public class Main {
public static void main(String[] argv) throws Exception {
byte[] b = new byte[] { 34, 35, 36, 37, 37, 37, 67, 68, 69 };
System.out.println(byteArrayToLong(b));
}
/**
* Converts a byte array to a long.
* @param b - The byte array. Must be a length of at least 8.
* @return The long.
*/
public static long byteArrayToLong(byte[] b) {
return b[7] & 0xFF | (b[6] & 0xFF) << 8 | (b[5] & 0xFF) << 16
| (b[4] & 0xFF) << 24 | (b[3] & 0xFF) << 32L
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