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/* Knowledge Point: Anonymous inner class function: anonymous inner class is also an inner class without a name because there is no name, the anonymous inner class can only be used once, It is often used to simplify code writing but
Polymorphic ★★★★★ (one of the object-oriented features): The function itself is polymorphic, and a certain thing has different concrete embodiment.embodiment: A reference to a parent class or interface refers to its own subclass object. Animal a =
The function of an inner class is to access private data in an external classmember Inner class:
A member's inner class can be equated as a member variable.
Member inner classes cannot have static declarations.
The member inner
In general, there are 4 inner classes: General inner class, static inner class, local inner class, anonymous inner class.I. GENERAL internal classes: Normal Inner classes are not static decorated and defined in the outer class body.1. Methods in the
Static members
A static member of a class is often referred to as a class member because a static member is associated with a class, not an instance of the class. Non-static member variable methods are often referred to as instance members
Interface:[Modifier] Interface Interface Name [extends parent interface name 1, parent interface Name 2, ...] {[Public] [Static] [final] type variable;[Public] [Abstract] method;}modifier, an optional parameter that specifies the access rights for
PrefaceJava from the time of JDK1.1, began to introduce the concept of inner class, then the small part of the blog to share some of the characteristics of the internal classes in Java.what is an internal class? In many cases, a class is defined as
In general, there are 4 inner classes: general inner class, static inner class, local inner class, anonymous inner class. I. general internal classes: Normal inner classes are not static decorated and defined in the outer class body.1. Methods in
It 18 Palm Seventh Day summary (including job) review--------Object a subclass AA Subclass AAA You can use A AA AAA to create a new subclass You can use either to declare abstract classes and Interfaces------------------- all methods in an
In general, there are 4 inner classes: General inner class, static inner class, local inner class, anonymous inner class.I. GENERAL internal classes: Normal Inner classes are not static decorated and defined in the outer class body.1. Methods in the
Synchronous synchronized synchronization method synchronized can be used to lock a method or block of code, and when it modifies a method or a block of code, at most one thread at a time executes the code. This means that when two concurrent threads
Let's look at the following code: Public classTest { Public Static voidMain (string[] args) {} Public voidTestFinal intb) {Final intA = 10; NewThread () { Public voidrun () {System.out.println (a); System.out.println (b); };
First, the interface
Understanding of the interface
Java interface is the declaration of a series of methods, is a collection of methods features, an interface only the method of the characteristics of the implementation of the
Inner class:A class is defined in another class, which is called an inner class.Example: class zx{ public static void Main (String []arr) {outer o = new Outer (); O.method (); }} class outer{ class Inner//inner class, you can define multiple
Zen House Moon (Http://www.cnblogs.com/yaoyinglong)1. What is an internal classIt is simply a class, interface, or method that is created within a category. The method of creating an inner class is clear in this sense. PackageCom.gissky.innerClass;
Inner classThe last syntactic sugar, the inner class, the inner class refers to the definition of a class within a class.The inner class is also a syntactic sugar, because it is just a compile-time concept, Outer.java inside defines an internal
Learn from: http://blog.csdn.net/xiaanming/article/details/8703708/http://hellosure.iteye.com/blog/1130176 content and comments are very exciting, now just learning concepts, and later in the use of the need to continue to study.Class A implements
Event handling:ActionEvent && windowevent:ActionEvent--Contains a action_performed. The triggered action has a click button, double click Options, select the specified menu item, enter input, and so on.addActionListener ()--Al->actionlistener or a
The content of this article is transferred from blog: http://www.cnblogs.com/mengdd/archive/2013/02/08/2909307.htmlThe related classes are organized together, reducing the clutter in the namespaces.An inner class can be defined in another class and
An inner class is a class that is redefined inside an outer class. The class name does not need to be the same as the folder. The inner class can be static, or public,default,protected and private adornments are available. (The external top-level
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