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Java learning notes-HttpServletResponse (21), java learning notes Public void doGet (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// get the byte stream object ServletOutputStream out = response. getOutputStream (); // gets the response Stream object PrintWriter writer

Learning notes: Because the java Anonymous class learns some minor usage of interfaces, learning notes javaI found a lot of interesting code when looking at the CometD sample code. But to be honest, it is really tiring to look at other people's code. So let's record this point. First look at a piece of code: Code 1 contains a new operation in the Code and is carr

Java learning notes-implementation of standard connection pool (27), java learning notes Javax. SQL. DataSource. Java. SQL .* DataSourceThe interface is implemented by the driver supplier. There are three types of implementations: Basic implementation-generate a standard C

. Multiple words, the first letter of each word should be capitalized;Example: HelloWorldB: Variable name, method name: First letter lowercase, multiple words, start with the second word, capitalize the first letter;C: Package (folder) Name: All lowercase, even if multiple words, all letters all lowercase;D: Constant Name: All letters uppercase, multiple words, in the middle with an underscore _ separated;Example: Student_age3. Class name and variable name use "noun", method name with "verb"Iden

Java web Learning Summary (4), java web Learning Summary1. What is HTTP? HTTP is short for hypertext transfer protocol (hypertext transfer protocol). It is an application layer protocol of TCP/IP protocol, used to define the process of data exchange between WEB browsers and WEB servers. After the client connects to the

In java learning, the use of package packages, the import key words (small records in java learning), and packageimport Learning java,PackagePackage usage and import of the import key words (small record in

JAVA thread Learning (2), java thread LearningThis is a project with three classes.First:Package com;// Military thread// Simulate actions of both sidesPublic class ArmyRunnable implements Runnable {// Volatile ensures that the thread can correctly read the value written by other threads// VisibilityVolatile boolean keepRunning = true;@ OverridePublic void run ()

JAVA learning notes (9)-initialization block and static code block, java learning notesInitialization Block /** Initialization block * initialization variable method: block of code declared, constructor, and code block * modified with the static keyword, called the static code block ** execution sequence: static code b

[Java learning notes] generic and java learning notesGeneric: Jdk1.5 Security MechanismBenefits: 1. Run the ClassCastException problem to the compile time. 2. This avoids the trouble of forced conversion. When will it be used? When the referenced data type of the operation is uncertain, use In fact, In a program, as

Java learning notes-five methods of multi-thread synchronization, java learning notesI. Introduction A few days ago, the interview was abused by the master and a lot of basic knowledge had to be taken up again. If you don't talk much about it, go to the topic.Ii. Why thread synchronization? Because when we have multipl

Java learning Summary (1), java learning Summary Everything in Java is an object. Create an object type Class ATypeName {/* Class body goes here */} Class (Object Type) has two types of Elements Field (data member): any type of object can communicate with it through referen

[Java learning notes] Static import and java learning notes Import 1 package p2; 2 3 // import static java. util. collections. max; 4 5 import java. util. arrayList; 6 import static java