java oop book

The book is generally finished, but the seventh chapter is not in a hurry to end.But fortunately it is finished, barely count it.Recall this year, quite feeling, the heart has been seeking progress, but it is very difficult to act up.Think about it indeed ah, want to always progress must sacrifice their spare time, although not to exclude learning, but you have to admit that the feeling of paralysis is very good.Man, there's really nothing to stop, an

extension, the value of Start7 after the 0xffffffff,start7>>>1 is the 0x7fffffff;When this value is re-deposited in start7, in order to put int value into the short variable, Java automatically executes the dreaded narrow native type, directly the high 16 bits off, the remaining (short) 0xFFFF, and back to the starting point, resulting in a dead loop.This reminds us not to use the compound assignment operator on the Short,byte,char type, which is pro

(); Socket.close (); } } Catch(Exception e) {e.printstacktrace (); } }}The client code is as follows: ImportJava.io.BufferedReader;ImportJava.io.InputStreamReader;ImportJava.net.Socket; Public classClient { Public Static voidMain (string[] args) {BufferedReader reader=NULL; Socket Socket=NULL; Try { //Create a client socket to connect to the serverSocket =NewSocket ("127.0.0.1", 36000); //read the byte stream from the service sideReader =NewBufferedReader (NewInp

Clientsocket=NULL; Try { //Create a client socket to connect to the serverClientsocket =NewSocket ("127.0.0.1", 36000); //read the traffic sent by the service sideinput =NewDataInputStream (Clientsocket.getinputstream ()); String FileName=Input.readutf (); LongFileSize =Input.readlong (); System.out.println ("received the server sent over the file, the file name is called:" + filename + ", the file size is:" +fileSize); //to read a file into a localString Savepath = "E:\\just a test.

ID;//user Idprivate String username;//User name private string password;//user password private string realname;//user real name private Date createtime;//user registration Time private The integer mark;//user effectively marks the public users (integer ID, string username, string password, string realname, Date createtime, Integer Mark) {super (); this.id = Id;this.username = Username;this.password = Password;this.realname = Realname;this.createtime = Createtime;this.mark = Mark;} Public Users

use R2 in addition to R1, ... So go on until you can divide it evenly. The last non-0 divisor is (A, b).Time complexity O (logn).String s = "a" + "B" + "C" + "D" + "E"; how many objects are created?1 of them. "A" is a constant and only the literal value is stored.What are the output results of the following programs?String str = "ABCDEFGH";System.out.println (str.dubstring (3,5));Answer: "DE"What's the difference between StringBuffer and StringBuilder?The newly introduced StringBuilder class is

This example for you to share the Java Online Book Mall category module code for your reference, the specific contents are as follows Sql CREATE TABLE ' t_category ' ( ' CID ' char (m) not NULL, ' CNAME ' varchar ' default NULL, ' pid ' char (#) Default NULL, ' desc ' varchar DEFAULT null, ' by ' int (one) not null auto_increment, PRIMARY KEY (' CID '), UNIQUE KEY ' cname ' (' cname '), Key