java coding practice

Recently developed a mobile phone on the Da Yu go software (please to my Sina blog to learn more about: Yygo mobile), because to read Chinese games, so need to support Chinese coding. In Nokia, Sony Ericsson, Dopod and other machines running well, you can open the Chinese games, and display the normal Chinese chess review. But in Samsung, MOTO, Lenovo and other models can not open the file. No matter what Chinese code, including GB2312,GB18030,GBK, ca

Java coding SpecificationThe first letter of each word in the naming conventions class must be capitalized, as shown in figureUserServiceIncorrect naming methoduserService、userserviceTest caseTestEnd, suchUserServiceTestIf it starts with the abbreviation, the abbreviation should all be in uppercase, as shown in figureHTMLEditorIncorrect syntax · the class name should contain English letters or numbers, and

subscript of each node of the Huffcode array is filled by the back forward and the prefix of the encoding is guaranteed to be the same as XX ... huffcode[0][6]=1 huffcode[0][5]=0Then Huffcode is 0000 0001 that is small Mark 1 of a Huffman node Huffman slowedFor (Huffmannode c=hn[j],p=c.getparent ();p!=null;c=p,p=p.getparent ()) {if (P.getlchild (). Equals (c)) huffcode[j][start--]=0;else huffcode[j][start--]=1;}//a path to the same node.huffcode[j][start--]=-1;//to the remaining path is padding

meaning of the Description field */Special NOTES:TodoA place that has not been completed but must be completedFixmeWhere the bug must be modifiedIf a method is an implementation of an interface, then the detailed method document comment should be written in the method of the interface class, and the implementing class method should guide the past through the @see.Code optimization:1. Avoiding the "God class"2. Try to separate some logic implementations, especially reusable ones, into different

1, the class name uses the Hump name method, the first letter capitalization.2, the class variable uses the Hump name method, the first letter lowercase.3, the method name is a verb phrase, the first letter lowercase, as far as possible to describe the intent of this method.4, note in the fine not many, a good note to try to describe the code to express the meaning.5, a function of the different operations of the Code section separated by a blank line, convenient for later maintenance.6, the var

Package (packages)Naming conventions for package names: 1, lowercase 2, at least one level of directory 3, domain inversion writingPackage Baidu;Package com.baidu.www;Class (classes)----- Large Hump MethodNaming conventions for class names: capitalize all words in the first letterClass MobileClass TestmobileInterface (interface)Naming conventions for interfaces: Capitalize all words in the first letterInterface Animal;Method (Methods)Naming conventions for methods: first letter lowercase, initia

= new Servicetask ();Stask.setid ("Sid");Stask.setname (name);Stask.setimplementation ("Activititest.printvariables");String implementationtype = implementationtype.implementation_type_delegateexpression;Stask.setimplementationtype (Implementationtype);return stask;}}------------Listener Class--------Package com.travesky.bluesky.activiti.utils;Import Java.util.Arrays;Import Org.activiti.bpmn.model.ActivitiListener;Import Org.activiti.engine.delegate.DelegateTask;Import Org.activiti.engine.deleg

same problems as I do then look down, if not that may not help you in the following content. First, check the text encoding of the current database.SHOW VARIABLES like ' character_set_% ' I am using the MySQL database, the code is as follows: The workaround is simple to add a sentence after the database connection statement? USEUNICODE=TRUECHARACTERENCODING=GBK on the line.String url = "Jdbc:mysql://localhost:3306/db_databaseuseunicode=truecharacterencoding=gbk";String user = "root"

Learn Java for a few months, has been to public,private,protected,static,final keyword and with each other not too concerned about, today read the "Java Security coding standards" only to find the severity of the problem.Code that does not conform to the rule:A data member of the underlying data type of public (common). Should be changed into private form.Public

Java coding SummaryI. Principles of practice1. Save the page file in the same format as the statement.If you declare 2. Whether it is get, post or Javascript, the browser submits the request in the encoding format specified by the page file.3. Javascript methods such as encodeuri and encodeuricomponent use UTF-8 format to encode dataIi. HTTP and Servlet specificationsA. http protocol1. Get according to the

software system structure.The tighter the connection between the modules, the stronger the couplingThe module's independence is worse.The coupling between modules depends on the complexity of the interface between modules, the mode of invocation and the information transmitted. Coupling and cohesion are the two qualitative standards of module independence, when the software system is divided into modules, it is possible to achieve high cohesion and low coupling, improve the independence of mod

The IDE I'm using is idea, and the places where eclipse may be set up are different1. Encoding of source filesWhen writing. java files in various Ides, there is an encoding that the IDE stores files on the machine in this encoding format, such as my settings, to set the S.java file to GBK format2. At compile time, Javac will read the file in the specified encoding format and then compile it into Unicode format.For example, I joined encoding GBK this s

Refer to Sun's Java coding specification, semi-translation semi-comprehension. Use blank lines to split blocks of code and add comments to code blocks; A file a class (or interface) that places a private class behind a common class that references that class; Source file composition: The declaration of a file comment, Package/import, class, or interface;

Environment Java Environment JDK1.8 installed mysql-5.6.38-winx64 idea2016 (64)The problem is this: Idea debugging Eclips project into the database and changing question marksFirst of all, Eclips and release of the project is not a problem, the first thought is the coding problem, so check the project and database code, but see that the code is UTF-8, the database is viewed through (navicat)But there are ar

xml| Coding | solve | Problems recently encountered a project, the need to save the declaration file in XML format, coding problems really let me a headache for a while. Now all unified into UTF-8 code. Specific operations in various languages Here, I use the DOM for XML parsing, which should be simple. 1 customers first use VB to edit the form, generate a Apply.xml file. In VB, use MSXML 4.0. If you don't

; One inputtype= "text"name= "Name"> A inputtype= "Submit"value= "Submit"> - form> - Body> the HTML> 1 protected void DoPost (HttpServletRequest request, httpservletresponse response) 2 throws servletexcept Ion, IOException { 3 4 // 1. The obtained request parameter is not processed, and the result is "iso-8859-1" the decoded parameter 5 String name1 = request.getparameter ("name" 6 System.out.println (name1); // name1 =??????? 7 8 } 1 protected voidDoPost

= keygenerator.getinstance ("AES"); Kgen.init (+);//192 and-bits may unavailablesecretkey skey = Kgen.generatekey (); byte[] raw = skey.getencoded (); Secretkeyspec Skeyspec = new Secretkeyspec (Raw, "AES") Cipher.init (Cipher.encrypt_mode, skeyspec);//Encode bytes as UTF8; strtobeencrypted contains the//input string that was to be encryptedbyte[] encoded = strtobeencrpyted.getbytes ("UTF-8");// Perform encryptionbyte[] encrypted = cipher.dofinal (encoded);[Availability]The use of mathematical

Start from difficulty 1:1, Remove specified Elem from unsorted array:2 pointers, one was to iterate all the elements in the array, the. Increase if current value was not equal to specified element.2, Remove duplicates from sorted Array:still 2 pointers, compare current value with Previous.3, Remove 3rd duplicate from sorted Array:on 2, with another var to store the appearance number.4, Remove duplites from sorted linked List:prev Curr, then pay attention to NULL head input.[

Practice: Java Virtual Machine 2 "virtual machine working mode", Java Virtual Machine Today, I started to practice Java Virtual Machine II: "virtual machine working mode ". 5 Series in total One of the actual Java virtual machin