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combining the event object into the controller is perfectly possible and more concise and readable.Also, when it comes to internal classes, closures and callbacks are often mentioned. But internal classes are not the only solution.Simple inheritance, the combination can achieve the same data encapsulation effect.There are still a lot of situations where there is no internal class that can't be handled, or

referenced classes are repeatedly validated, consider using -Xverifynone parameters to turn off most of the class validation measures to shorten the load time of the virtual machine class.Prepare: Assign memory to the class 静态变量分 and initialize it to a default valueThe prep phase is a phase that formally allocates memory for class variables and sets the initial value of class variables, which are allocated in the method area. There are a few things t

Java programs use abstract classes to implement abstract concepts of nature. The function of an abstract class is to organize many related classes together, providing a common class, an abstract class, and the concrete classes that are organized by it will derive from it as subclasses of it. An abstract class depicts t

process (there are differences) Why is there a polymorphic phenomenon??? Automatic Transformation + method rewriting Auto-Transformation + method overrides will result in inheritance and will therefore be polymorphic There are only three ways to classify the Java language: Construction method: public class name () {} Common method: Public return type method name (parameter) {}

static properties and methods directly through the class name, by creating objects to visit common methods **/ Public classStaticinnerclass {Private StaticString name; Static classson{PrivateString tr; Private Static intAge ; Public voidTell () {System.out.println (name); } }}4. Anonymous inner class/*** Anonymous inner class by calling * **/ Public classAnonymityinnerclass { Public Static voidMain (string[] args) {Father Father=NewFather () {@Override Public voidMenth () {//TODO Au

[Java] chained call of sub-classes and java chained call Record a small problem recently encountered in the project design. Premise: There are two POJO classes, both of which can set their property values through chained calls. One Class inherits the other class. Q: After a subclass object accesses the parent class met

JAVA String, StringBuilder, and StringBuffer classes, java clears stringbuffer The StringBuffer class (or StringBuilder) is the same as the String class and is also used to represent strings. However, because the internal implementation of StringBuffer is different from that of String, StringBuffer does not generate new objects during String processing, the memo

, and will be error-marked with private decoration) The methods in an interface cannot be implemented in an interface, but only by the classes that implement the interface. Example Public Interface test{ // Property public staticfinalint var = 1 ; // Method Public void // implicitly defined as public abstract}The difference between an abstract class and an interface A method in an abstract class can have a method body,

This article address: http://www.cnblogs.com/archimedes/p/java-study-note3.html, reprint please indicate source address.1. An overview of object-oriented program design methodsObject-Oriented ProgrammingCompared with the structured programming method, it is more in line with the human understanding of the real world thinking mode, has become the mainstream direction of program designKey concepts involved: abstraction, encapsulation, inheritance, polym