java programmer career path

Black Horse Programmer--java Foundation--Network programming------Java Training, Android training, iOS training,. NET training, look forward to communicating with you! -------Several basic conceptsNetwork communication three elements: IP address, port number, transmission protocolIP Address:It is a device identifier in the network, and

to the present company, worked is 2.5, in this 3.5 of the time, I learned a lot of things, not only technology, but also dealing with people, etc. In the future if you have any questions or work problems can leave a message, I see there is time, will definitely reply.Since it is a technical blog, you can not always say something useless, simple talk about what I have learned in the 3.5, in the first company in the 10 months, is basically in the webservice, in the second company's WebService als

Dark Horse programmer--java Basic---IO (bottom)------I. OverviewIn addition to the basic byte stream and character stream, Java provides classes such as the file class, properties class, print stream, sequence flow and input and output, which can help us to better handle the information. They are briefly described below.　First, the text1 , File class the file cla

above is my personal eyes of the general to the Java EE Development Line, limited to the passage is not comprehensive, the actual personal growth route may be due to different work content will be very large, some people biased to the bottom of the study, some people biased to the business needs of design, some with a strong industry color, Besides technology, there is also a lot of knowledge that is important. W does not have an easy way to do

will be translated, and then need to constantly contact some new framework, need to see the latest documents, need to go to GitHub to contribute to the code to communicate with people, to stack Overflow problem, and so on, of course, the ability of English is not a day can improve, at this time can find a translation software, see more, reading ability will slowly improve.Have the ability to log on to foreign academic sites, after all, in the domestic some reasons you know, encounter problems c

encountered bottlenecks. They strive to find breakthroughs and continue to study hard. My words: my old man is on this layer. nnd, I feel like I need to learn something. There are more and more things in the West, so why do you get confused. 3. programmer Level 3 realm: do not care about the specific technical details, and pay more attention to the market and management. What cto, CIO, and etc. My words: I am not here Level, do not know what it fe

, without the package, are the nameless packages.There is only one public class in a class, and the source file must be the same as the class name, if there is no public, the source file name is arbitrary.When you import the same class name,The use of a nameless package must be in the same directory.Com.solaire.enhance.Week has the package name is the main, then is and com.solaire.enhance.*, is the non-package name mainly. Same asIf you have a package name, add the full name path.Importsimplifie

reads all if not given or negative. File.readline ([size]): reads the entire line File.next (): reads the next line File.readlines (): reads all rows into a list of strings, each of which is a single line of content (including newline characters) File.write (str): Write content that does not automatically add line breaks File.close (): Close Open File File.tell (): Gets the position of the current pointer File.seek (offset[, whence]): Sets the current location of the

to start, where to receive, where to handle, and where to return, you have to understand browser and server relationships and division of labor, cookies and session,request and response. This is the beginning of the learning of web development, which is the most original Java since the birth of the most official web development technology, of course, the real projects are rarely directly adopted these technologies, in order to continuously improve th

mainstream technology, although you may just heard, understand, but the key moment you need to know how to choose technology, and quickly master it. You will also consider trying another language, this is not to say to what C + + C #, which is irrelevant to the Java programmer, I am talking about some of the languages running on the JVM, such as Scala and groovy, when you first know them, you will feel tha

PHP notes--java programmer to read PHP program PHP is a server-side scripting language with a loosely typed language. scripting styleto end; Comments: A)//b) #c)/* */ Variables are containers that store data and are case-sensitive. When the variable is very long, use the delimiter $k =...StrBecause PHP is a loosely typed language, variables do not have specif

the critical section, causing the object to be damaged.Conditional object: The thread usually enters the critical section, but discovers that it can execute after a certain condition is met. To use a conditional object to manage threads that have acquired a lock but cannot do useful work. is called a condition variable.An object can have more than one related conditional object. Gets a conditional object using the Newcondition method.Lock interface: A synchronous code block or a synchronization

methods are enumerated primarily through the elements of the vector, the keys of the Hashtable, and the values in the hash table. The enumeration is also used to assign an input stream to Sequenceinputstream.Note: The functionality of this interface is duplicated with the functionality of the Iterator interface. Additionally, the Iterator interface adds an optional remove operation and uses a shorter method name. The new implementation should prioritize the use of the Iterator interface instead

){ BlockingQueueStringnew LinkedBlockingDequeStringtry{//queue.offer("A");//立即向队列末尾追加元素/* * 向队列末尾追加元素，指定可延迟5秒。 * 若5秒钟内成功将元素加入队列返回true * 若超时后元素仍然没有加入队列则返回flase */ queue.offer("A",5,TimeUnit.SECONDS);}catch(InterruptedException e){ e.printStackTrace();} System.out.println(queue.poll());}This is the end of the article. Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not re

. The current thread must have the current object lock. 　　 Waite ()and theNotify ()must be insynchronizedfunction orsynchronized　Blockto make a call in the. 　　 3.yield Method Pauses the currently executing thread object. 　　 yield ()just to get the current thread back to the executable state, so executeyield ()threads are likely to be executed immediately after they have entered the executable state. 　　 yield ()only threads with the same priority or higher priority have an opportunity to execut

------Java Training, Android training, iOS training,. NET training, look forward to communicating with you! ------I. OverviewIn addition to the basic byte stream and character stream, Java provides classes such as the file class, properties class, print stream, sequence flow and input and output, which can help us to better handle the information. They are briefly described below.　First, the text1 , File cl

interface:await (), Signal (), Signalall (); --------------------------------------------------------Class Boundedbuffer { Final Lock lock = new Reentrantlock (); final Condition notfull = lock.newcondition (); final Condition notempty = lock.newcondition (); final object[] items = new object[100];int putptr, takeptr, Count;Public void put (Object x) throws Interruptedexception { Lock.lock (); try {While (count = = items.length) notfull.await (); items[putptr] = x;if (++putptr = = items.leng

First Lecture Multithreading Overview1. Definitionprocess: is a program that is being executed. Each process execution has an execution order, which is an execution path, or a control unit. When the program runs, it is allocated a memory space, the process is used to identify the space, the package unit, the thread is the real part of the thread.Thread: A separate control unit in a process that controls the execution of a process.There is at least on

the priority of a threadEach thread executes with a certain priority, the higher priority gets more running opportunities, and the lower priority gets less chance of running.Thread provides the setpriority (int newpriority) and getpriority () methods to set and return the priority of the specified thread. Set the priority integers between 1~10, or you can use the three static constants of the thread class:> max_priority: The value is 10> min_priority: The value is 1> norm_priority: The value is

ActionListener () {69 public void actionperformed (ActionEvent e) Errdialog.setvisible (FALSE);}71});}73 public void Readdirandfile () {7 4 String str = dirtext.gettext (); file dir = new file (str); if (dir.exists () dir.isdirectory ()) {Fileanddirarea.settext (""); tring[] FileNames = Dir.list (); Name:filenames for (String) {fileanddirarea.append (name+ "\t\n"); 81}82 }83 else {inforlabel.settext ("path: '" +str+ "is incorrect, please re