I learned Spring today and suddenly wanted to review the Java class loading and class reflection. Consolidate the underlying principles. Some of them refer to Teacher Li Gang's crazy Java handout and Spring3.x enterprise application development practices by Chen xionghua and Lin kaixiong. 1. A command corresponds to a
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3 The processing class that compiles and reads the data table also puts the processing class into the Java class directory of the PHP invocationThis is a processing class that reads the User Role table returns a JS array of relationships
Preface:Java's library is growing and contains countless classes and interfaces. But there are some very important classes and interfaces, which are the core part of the Java class library. Common examples include string, object, class, collection, classloader.... Familiarizing yourself with these classes is the basis for learning
A. class file
Note: Each class file corresponds to a unique class or interface definition information, but the class or interface is not necessarily defined in a file (for example, a class or interface can also be generated directly from the ClassLoader).
Secon
Java Study Notes 6 -- class inheritance, Object class, and study notes 6 --
Next, we learned the following:
Java study notes 5-Class Method
Java Study Notes 4-basic concepts of classes and objects (2)
Class Loader?? The virtual machine design team takes the "fully qualified name of a class to obtain a description of this type of binary byte stream" in the class loading phase, which is implemented outside the Java Virtual machine. So that the application can decide for itself how to get the classes it needs. The code
NOTE: Reprint please indicate the source./**------------------------Public Method-------------------------* */*** Add Remove method to array** @param s* The values in the removed array* @return*/Array.prototype.remove = function (s) {for (var i = 0; i if (s = = This[i])This.splice (i, 1);}}/**------------------------Public Method End-------------------------* */**------------------------bytemap Start-------------------------* */*** Simulate Java Map
Class, abstract class, interface, inheritance and object (Java)
Zookeeper --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------This is not a teaching material. I sometimes look at it on th
Many people may not be familiar with the inner class mentioned in Java. In fact, similar concepts also exist in C ++, that is, nested class (nestedClass). The differences and relationships between the two are compared in the following section. On the surface, an internal class defines another
strings, dates, and numbers are the most commonly used data objects in Java programs, and the creation, modification, formatting, and transformation of these data are incorporated into every corner of the Java program and must be mastered. This section demonstrates the following common entity classes through an instance
Java System-Level classes: System
This article mainly introduces the Java language class class usage and generalization (detailed), we all know that Java program in the running process, all the object type identification, that is, Rtti. This information records the class to which each object belongs. A virtu
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The version number of the magic number and
object, the Java compiler implicitly transfers the reference of its external Class Object and keeps saving it. In this way, internal class objects can always access their external class objects. This is also why external class objects must be created before they are created
Java object-oriented -- class loaders and reflection, java object-oriented -- LoadingThe relationship between jvm and class in the Class Loader
When you call a java command to run a java
StaticClassStatic class (Java)
In general, the class cannot be modified using static. If you must use the static modifier class, the static modifier is usually an anonymous internal class.
Create another class in a
When we see class, do we suddenly think of the class we wrote in the program? This class is not a class, the class is actually called the Java class collectively, we can call it abstrac
One, Java provides three kinds of ClassLoader to load class:1.BootStrap ClassLoader: called the Startup class loader, is the topmost class loader in the Java class loading hierarchy, responsible for loading the core
How to update the Class in the Java package, or re-package the class in the package
The following describes how to execute basic commands:
Only the javac, jar, and java (*. exe) commands are used,
I. javac [compiling Java source files into
Up-depth Java virtual machine- - deep Java Virtual Machine (ii)--Class loader details (above), in the previous article, we explained the life cycle of the class loading and linking, this one we went on to look down. initialization of the class : initialization of a
The Date class _ Calendar class Java. util. Date class is an encapsulation class. If you create an object of this encapsulation class, you can get the system time, and the system time obtained is a Long data type. The data of this
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