In the Java compilation stage, the method source code is compiled into bytecode instructions,
In the compilation phase:
At this time, there will be static distributions to determine which of the static types the called method is called (
Simulate generic
Java's generic system cannot work well with its dynamic reflection API. for jmock, this means that when you simulate generics, the compiler will warn you of possible static type errors. the warning is incorrect. the best way to
In object-oriented programming languages, polymorphism is the third basic feature after data abstraction and inheritance.
8.1 further upward Transformation
8.2 Transfer
Associating a method call with a method subject is called binding. If binding is
In PHP, the final static $this keyword is mainly used in the class or object, I will learn the final static $this notes, I need to know the friend can refer to.
Final keyword
The PHP final keyword is used in front of a function or class name to
We have a class A that calls its own method F in the constructor.
Now there is a Class B that inherits a and overwrites method F.
Then, when constructor B calls the constructor A, does F in the constructor a refer to A: f or B: F?
In C ++, The
The implementation of bytecode commands in jvm is important, and the implementation of bytecode in jvm is important.
Java is interpreted and executed, including the dynamic link feature, which provides a lot of space for flexible expansion during
Finalstatic $ this keyword learning notes in php. In php, the finalstatic $ this keyword is mainly used in classes or objects. Next, I will record my notes on learning finalstatic $ this. For more information, see. In php, the final static $ this
20145335 Shanhao "Java Program Design" 3rd week study summary textbook Study content summary fourth chapterClasses and objects
Defined:
Object: The specific entity that exists, with a clear state and behavior.
Class: A
Function of class 1 instantiate object 2 as the basic class of other classes, inherited! 3. Role of calling its static member class
1. instantiate an object
2. it is inherited as the base class of other classes!
3. call its static members
Two main
This article mainly introduced the PHP class related knowledge points, combined with the example form summarizes the PHP class related final class, the final method, the abstract class, the abstract method, the interface, the overload, the Magic
PHP class variables and members, and issues to be aware of during inheritance, access, and rewriting
Class Myclass {
Public $ prop = 123;
}
$ Obj = new Myclass ();
?>
The member
In php, magic methods and keywords are commonly used. keywords include final, static, const, magic method _ call (), _ toString (), and _ clone (), _ autoload () and so on...
In php, magic methods and keywords are commonly used. keywords include
New features of PHP5: PHP is more object-oriented. PHP has completely re-developed the kernel for processing objects, providing more functions while improving performance. In previous versions of php, the kernels for processing objects and basic
The representation of the destructor method in the inheritance in the PHP construction method, PHP constructs
This article for you to share the PHP construction method of the analysis method in the inheritance of the performance, for your reference,
2.final1) Why is the string final modified?Answer yourself:Answer:Mainly for the sake of "efficiency" and "safety". If string is allowed to be inherited, the performance of the program may be reduced due to its high usage rate, so string is defined
Java-based final and static keywords, javafinalstaticI. finalAccording to the context of the program, it can modify non-abstract classes, non-abstract class member methods and variables. The final class cannot be inherited and has no subclass. The
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