本文整理汇总了Java中com.google.common.primitives.Bytes.lastIndexOf方法的典型用法代码示例。如果您正苦于以下问题：Java Bytes.lastIndexOf方法的具体用法？Java Bytes.lastIndexOf怎么用？Java Bytes.lastIndexOf使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类com.google.common.primitives.Bytes的用法示例。
在下文中一共展示了Bytes.lastIndexOf方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: validateAndStripChecksum
import com.google.common.primitives.Bytes; //导入方法依赖的package包/类
/**
* extracts the checksum of the source, calculates a new one on the cut off source and compares them.
* returns the cut off data only if the checksums matched
*
* @param source
* @return
*/
protected byte[] validateAndStripChecksum(byte[] source) {
// retrieve checksum
int lastIndexOf = Bytes.lastIndexOf(source, (byte) SEPARATOR);
if (lastIndexOf < 0) {
throw new RuntimeException("no checksum was found on source: " + new String(source));
}
long checkSum = Long.parseLong(new String(Arrays.copyOfRange(source, lastIndexOf + 1, source.length)));
byte[] data = Arrays.copyOfRange(source, 0, lastIndexOf);
CRC32 crc32 = new CRC32();
crc32.update(data);
long calculatedCheckSum = crc32.getValue();
// validate checksum
if (Long.compare(checkSum, calculatedCheckSum) != 0) {
throw new RuntimeException("checksums do not match! calculated: " + calculatedCheckSum + ", provided: " + checkSum);
}
return data;
}