healthy programmer

Tags: javaweb commons logs output stream Jdbcutil height lib Next statementDark Horse Programmer _ Super Comprehensive Javaweb video tutorial vedio\ Dark Horse Programmer _ Ultra Comprehensive Javaweb Tutorial-source note \javaweb Video tutorial _day17-data source \day17_code\day17_1\ Big Data Goal: Save the MP3 to the database! Add the following configuration in My.ini! max_allowed_packet=10485760 1 Wha

One evening in 2015, I received a call from my friend. "Brother Fei, I want to recruit a programmer," my friend asked. Blablablabla, I boast, said a lot of high standards and strict requirements. "Brother Fei, why don't you join us?" ” I know my old friend's entrepreneurial project, playing high-tech pig. It is said to have a product that is a bracelet for a pig. An old friend, after all, is an electronic doctor. I'm a yard farmer, I'm afraid I can on

Dark Horse programmer------22-D ArraysDefinition of a 12-D array:Type identifier array name [constant expression] [constant expression]; such as: int a[3][4]; Represents an integer two-dimensional array A that defines a 3-row, 4-column, containing 12 array elements.References to 22-D arrays:Array name [subscript] [subscript]The array's subscript is zero-based and cannot be referenced beyond the range defined by the array.Initialization of 32-D arraysL

Dark Horse programmer------Four simple construction data typesOne by one-D arraysDefinition of a 11-D array:Type identifier array name [constant expression]; such as: int a[10]; the expression defines an integer array named a, which has 10 elements, 10 integer variables, which can store 10 integer data.The 02 type identifier represents the data type of an array element, the array name is a user-defined identifier, and the first address of the memory a

Dark Horse programmer------1 classificationThe syntax format for the classification is:1, the classification of the Declaration:@interface class names (category name)Method declaration@end2, the realization of the classification:@implementation class names (category name)Method implementation@endIn the declaration section, the classification can only increase the method and cannot increase the member variable; the member variables declared in the main

Dark Horse programmer------Four arrays and pointers01 The array name represents the first address of the array in memory, which represents the address information, so the array name can be interpreted as a pointer, but the array name is a constant and cannot be changed.#include intMain () {Charname[]="haha"; Charname1[]="GGGG"; Charname3[2][Ten] = {"fffff","JJJJJ"}; printf ("%s\n", name3[0]); return 0;}02 Pointers to arrays: Defining a pointer to an a

Dark Horse programmer------The foundation framework is the underlying framework for iOS development, which includes string, collection, date, time, and other basic classesvoid Test () { //define Date This struct type struct date{ int year; int month; int day; } Define struct variable struct Date d = {~, +}; D.day = 6;} void Test1 () { typedef struct { int year; int month; int day; } MyDate; MyDate is t

Dark Horse programmer------1.1 Expressions and statements in C languageexpressions, which are called constants, variables, and function calls, are referred to as expression, and the common form is an assignment statement, a function call statement, and an empty statement.L Assignment Statement: The value to the right is calculated first and then assigned to the left variableNote: The variable must be defined before use; the value of the variable is no

Dark Horse programmer------Basic structure of the second procedureA branch structure on Single Branch structureFormat:if (an expression){Statement}where "expression" is the criterion, as long as the value of the expression is not 0, the condition is considered to be valid. Geneva Dual-branch structureFormat:if (an expression)Statement 1;ElseStatement 2;Where the value of the expression is not 0, then "statement 1" is executed, otherwise "statement 2

As a novice programmer interview or technical learning sometimes blind, no clue, in fact, look back, the general aspect is relatively clear.1. Java aspects(1) Java syntax(2) data structure, 8 kinds of basic data types, String, StringBuffer, Stringbuild,map, collection(3) Multithreading, lock, Singleton mode, thread pool(4) Message mechanism(5) agent, design mode(6) algorithm(7) database, MySQL, sub-Library sub-table, cluster, optimization-------------

classification of unit tests that I understand2. Benefits of implementing Unit tests3. Java Programmer Unit Testing Tool LibraryDefinition and classification of unit testsThe definition of unit tests refers to the code that programmers write to test the logic code. In my understanding, unit tests are divided into the following two categories:Code testingCode testing refers to the implementation of the code to test, independent of the third-party envi

 Dark Horse Programmer--java Foundation--Inner class------Java Training, Android training, iOS training,. NET training, look forward to communicating with you! -------Inner classIf class a requires direct access to the Members in class B , then class B needs to establish an object of class a . In this case , the class A is defined directly in class B for ease of design and access. You can do it. Class A is called an inner class . An inner class can

If you are a student, you should be c,c++ and Java. There will be some VB, or c#/.net. How much you may have developed some Web pages, you know some html,css and JavaScript knowledge. On the whole, it's hard to see how many students have the ability to master a language beyond the limits of these languages. That's a shame, because there are a number of programming languages that make you a better programmer.In this article, I will tell you why you must learn Python or Ruby language. Compared

algorithm of binary graph in graph theory.Watercress 8.1 min"Illustrations and explanations are quite in place ~ ~ Let people look very interested, the algorithm with a very image of the way to express, easy to understand, this learning algorithm of the friend blessed. ”Getting Started + Advanced, Classic Classics Sedgewick's masterpiece, with Gartner TAOCP same strain Several decades of revisions, enduring bestseller Covering 50 algorithms that all programmers must master

memory at run time, and the programmer is responsible for freeing the memory with free or delete when appropriate. The lifetime of dynamic memory can be determined by us, and if we do not release the memory, the program will release the dynamic memory at the end. However, good programming habits are: If a dynamic memory is no longer used, it needs to be released, otherwise, we think there is a memory leak phenomenon.Knowledge Point 23: pointers to fu

became one of the kick for my job interview.ApplicationTo tell the truth, since the undergraduate internship, I have always felt that the algorithm in addition to the interview can use, the other basic use, and even wrote a quite complacent now read extremely silly articles to black those who are still "basic" or "internal strength" of the so-called "Daniel", Here's a piece of text that looks stupid now but feels truth at the time: So the move is what the algorithm AH basic ah, so-call

Some things are in the limelight, it is not said by a certain industry, a certain category of people, but the human race. June is a big thing, that is the "World Cup"!Some love the football partners must be concerned about the course of the game, the results of their favorite football players can be in the game, to recruit the Wind, the exhibition. However, we all know that in addition, there are some aboveboard football spinach exist, for some veteran players, even said to me 100 yuan, I can bu

Java programmers with a monthly salary of 20,000 belong to intermediate programmers. Is that the technology is a little better, and you can't do it at the architect level. Generally speaking, 20,000 of the salary depends on the following aspects.1. Whether the project can be completed independently, and what projects have been completed, at least the 6+ project. The project has a lot of experience, and the ability to understand the requirements will be much better.2. For the technical framework

--------------------------Java Training, Android training, look forward to communicating with you! ---------------------------The concept of framework and the principle of reflection implementation Framework Learning SummaryFirst, the concept1. Frame:　　Technical implementation of calls to currently undefined or non-implemented objects through the reflection technology of Java.　　For example: Developers build houses to sell to customers, and customers install windows and doors, and developers bui

, Management: Must be familiar with the use of ant to complete project management of common tasks, such as Project compilation, build Javadoc, build jar, version control, automated testing.7, the wrong: should be able to be based on the abnormal information to locate the cause of the problem and approximate location.8, thinking: Must master the main requirements of OOP, so that the use of Java development system to be a real Java system.9, Specification: The code must conform to the popular codi