inheritance:Observe the classes to be used, and determine their common and unique characteristics (attributes), behavior (methods);Extract the generic move to the parent class. Facilitates the reuse of methods and properties by subclasses.For different features and behaviors, you can redefine or extend them within subclasses.(Supplemental, shortcut key save Ctrl+s,eclipse file with * is not compiled (not valid, no class file generated))In Java, a class can have only one parent class, and a clas
(minuteMinute= ' 0 ' +minute}Time = (year+ "-" +month+ "-" +day+ "" +hour+ ":" +minute ");return time;},Calculate the difference n days dateSubtime:function (date,n) {Date = new Date (date)Date = Date.valueof ()Date = Date-n * 24 * 60 * 60 * 1000Date = new Date (date)Date = Jsdate.gettime (date);return date;}}The above example is to clarify some JS time of the 0 problem, and take the time to get a demo# #4. When logic is judged many times, the code is structured in the following wayvar
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This article will share with you the usage of javaloader In the BlackBerry development environment. javaloader is a powerful tool that can be used to directly install the cod file (Ha, no alx generation tool is required ), you can also obtain the log of the BlackBerry phone and take screenshots.
Use of javaloader in BlackBerry Development Environment
Javaloader is a powerful tool that can interact with BlackBerry mobile phones connected to USB on a PC
First, I recommend that you read the difference between Equals and = before proceeding to this article (although some explanations in this article are still a bit difficult ), I wrote this article only because of the issues that have arisen in my article @ Yimu sunshine. Of course, you can also read this article directly, because I have not forcibly linked this article with it.
Let's take a look at the following code:
1 int i1 = 8;2 int i2 = 8;3 bool
stabilized.4.Execute memory initialization sequence.5.Program memc_cmd to ' 3 ' b000 which makes DRAM Controller enter "Ready" state.6.Check Memory Status field in Memc_stat until memory status becomes ' 2 ' bo1, which means ' ready '.From the above description, it is known that 6410 of the storage controller initialization is to have the process: (2440 not required) so look at how the Uboot to initialize the storage controller. Verify that the uboot
, find a value smaller than 0x000011254 and closest to it. In this program, the value is 0x00011108, for example:
It can be determined that a problem has occurred in the function. To locate the specific error on the row, you must use the. COD file to locate the problem.
The starting address of the socketthreadfunc function is 0x00011108, And the offset address of the error is:
0x14c = 000011254-0x00011108 (can be calculated using a Windows Calculator
"1" cip_admin_domain (option field a)---> Inside configuration (Option field a) property, Defalut_value set initial value (such as: Create a new project, the project status after creation is "pending approval")Cip_admin_codes (option field a)Note: Two fields in the table, and, front page code "option" field--"must be consistent,"2" multi-conditional value function, in SQLSelectfield A, field B(CaseWhen (codes. Field 1 = ' option English alias 1 ') Then ' Chinese name 1 'When (codes. Field 2 = '
VS 2005 use the map file to find out why the program crashed
Generally, when a program crashes, you can use DEBUG to find that the program crashed in that line of code. Recently, a multi-threaded program was compiled, and it was not known that an error occurred there, multi-threaded concurrency, and single-Line Debugging was difficult, finally, I found a better method to find the cause. by generating the map file, because 2005 cancelling the map file to generate the line number information
contains general connections.MIDP apimidp API packageDescriptionJavax. microedition. lcduiThe MIDP User Interface API provides a set of features for the user interface Implementation of the MIDP application.Javax. microedition. lcdui. GameContains the categories that can be used to develop rich game content for Blackberry devices.Javax. microedition. MIDletIt defines the interaction between the MIDP application and the environment in which the application runs the program.Note: during startup,
offset of 0x0004f8ec.From the above, 0x0004f88c Therefore, the address offset 0x0004f8ec must be the code segment in the middle of the function at 0x0004f88c. We found that the address is in the setfontsmoothing API.So you can use map to locate the function.The second step is to locate the code location. I may recall it wrong. The PDB format is binary, and there is a cod format to see which line of code has a problem.
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Recently, I am working on a project mainly to consider the large data volume. It is estimated that the computation will reach million in the near future. When retrieving data, I used the Stored Procedure cursor to insert or modify the data, the speed is very slow. After personal modification, the speed has increased by nearly 50%,CodeAs follows:
Insert statement:
Set @ SQL = 'insert drain. DBO. struct (inid, pdatetime, pH, cod, wt, inamount, Ljll,
This function splits the target string with the specified string and returns the result through the table structure.The code in the SQL service is as follows:1 CREATE FUNCTION [dbo]. [Fnsplit]2 (3@sInputString varchar (8000) 4, @sSplitChar varchar (Ten)5) RETURNS @tbl_List TABLE (SEQ INT IDENTITY (1,1), COD varchar (8000) )6 as7 8 BEGIN9 DECLARE @lInputStringLength Int,Ten @lPosition Int, One @lSplitChar Int A -SET @lInputStringLength =LEN (@sInputS
For security and exit control, RIM must track the usage of some sensitive BlackBerry Application programming interfaces (APIS. The sensitive category or method is indicated by the "Lock" icon or "Signed" in the API reference document. If you use these controlled classes in the application. your application must use a signature tool (provided by RIM) to sign the cod file before it is loaded to the BlackBerry smartphone. A valid credit card is required
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