package TestCallback; import javax.xml.bind.DatatypeConverter; public class CallbackDigestUserInterface { public static void receiveDigest(byte[] digest,String name){ StringBuilder result = new StringBuilder(name); result.append(": "); result.append(DatatypeConverter.printHexBinary(digest)); System.out.println("结果是"+result); } public static void main(String[] args){ String[] filenames={"C:\\Users\\BZP\\Desktop\\111.txt"}; for(String filename : filenames){ CallbackDigest cb = new CallbackDigest(filename); Thread t = new Thread(cb); t.start(); } } }