import?java.io.File;
import?java.io.IOException;
import?java.io.InputStream;
import?java.nio.file.Files;
import?java.nio.file.StandardOpenOption;
import?java.security.MessageDigest;
import?java.security.NoSuchAlgorithmException;


public?class?CalcMD5?{
????
????private?static?final?char[]?hexCode?=?“0123456789ABCDEF“.toCharArray（）;

????public?static?void?main（String[]?args）?{

????????long?beginTime?=?System.currentTimeMillis（）;
????????File?file?=?new?File（“C:/Users/Administrator/Downloads/OpenCVSharp-Samples.rar“）;
????????String?md5?=?calcMD5（file）;
????????long?endTime?=?System.currentTimeMillis（）;
????????System.out.println（“MD5:“?+?md5?+?“\n?耗時:“?+?（（endTime?-?beginTime）?/?1000）?+?“s“）;
????}

????/**
?????*?計算文件?MD5
?????*?@param?file
?????*?@return?返回文件的m

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1896??2019-10-17?13:57??CalcMD5.java