java class naming convention

1, the Narrow JavaBean specification The JavaBean must contain a parameterless public construction method that makes it easy to produce objects in a reflective manner. The property must be private. JavaBean must contain the get and set methods that conform to the naming convention to access the properties of the JavaBean. The JavaBean should be serializable (serializable). 2. Refle

) -- get the name field of the class declaration l field [] getdeclaredfields () -- get all fields of the class declaration for obtaining method information function: l method getmethod (string name, class [] Params) -- use a specific parameter type to obtain the named public method l method [] getmethods () -- obtain all common methods of the

() method call, That is, releasing your own resources before releasing the resources of the parent class. However, do not make frequent calls to garbage collection in your program, because each time a garbage collection is performed, the JVM forces the garbage collector to run, which consumes more system resources, competes with the normal Java program, and only calls garbage collection if it is performin

JAVA is a very powerful programming tool and its extension Library is also very useful. this tutorial mainly describes how to use PHP to call a powerful JAVA Class Library (classes ). For your convenience, this tutorial will include JAVA installation and some basic examples. Install JDK in windows. you only need to pre

JAVA is a very powerful programming tool and its extension Library is also very useful. this tutorial mainly describes how to use PHP to call a powerful JAVA Class Library (classes ). For your convenience, this tutorial will include JAVA installation and some basic examples. Install JDK in windows. you only need to pre

Java: internal classWhat is an internal class? An internal class refers to defining another class within an external class. An internal class is a member of an external class and is att

actions.public void Finalize ()//Convention destructor method named Finalize{//finalize () has no parameters and no return valueStatement sequence;}//A class can have only one finalize () method, Qiefinalize () forbid overloadJava's automatic memory management mechanism frees up objects that will no longer be used, so the usual class does not need to design a de

look here: [Javax.script bag What is the use of][9] Java naming system interface (Java naming and Directory Interface?,jndi)Jndi provides a unified client API that provides naming and directory functionality in Java-written app

toInner Inner = new Inner ();Inner.inner_f2 ();}public static void Main (string[] args) {New Outer (). OUTER_F3 ();}}Generating a static inner class does not require an external class member: This is the difference between a static inner class and a member inner class. Objects of the static inner

toInner Inner = new Inner ();Inner.inner_f2 ();}public static void Main (string[] args) {New Outer (). OUTER_F3 ();}}Generating a static inner class does not require an external class member: This is the difference between a static inner class and a member inner class. Objects of the static inner

Internal class The inner classes concept was introduced in JDK. In Java, another class can be defined inside a class (or a method or statement block). The latter is called an internal class, sometimes called a nested class (nested

Source: http://www.imooc.com/code/1578If the method does not contain a parameter, and there is no return value, we call it a method without parameters and no return value.The use of the method is in two steps:The first step is to define the methodFor example, the following code defines a method named show with no parameters and no return value, and the operation is output "Welcome to IMOOC."Attention, OH:1, the method body is placed in a pair of curly braces, to achieve a specific operation2, th

()--Get all public fields of a class L field Getdeclaredfield (String name)--Gets the named field declared by the class L field[] Getdeclaredfields ()--Get all the fields declared by the class To get the method information function: L Method GetMethod (String name, class[] params)--use a specific parameter type to

: Referencing any instance variable in a static method is illegal.The following is the output of the program:Static block initialized.x = 42A = 3b = 12Outside of the classes that define them, static methods and variables can be used independently of any object. This way, you can just add the number operator to the name of the class. For example, if you want to invoke a static method from outside the class,

occupy one of the data items, It is also the first table-type data item in the class file that appears.Because the number in the constant pool is not fixed, a U2 type of data is placed at the entrance of the constant pool, representing the constant pool count value, which is counted as 1 instead of 0. The capacity count of only the constant pool in the class file structure starts at 1, and for other collec

trigger initialization of this class.3) Constants are stored in the constant pool of the calling class at compile time and are not inherently referenced directly to classes that define constants, so initialization of classes that define constants is not triggered.second, class loading process1. LoadingDuring the load phase, the virtual machine needs to complete

make the program structure clearer. All you need to do is add a line at the beginning of the Java File Package mypackage; Note that the package statement must be the first line of uncommented program code in the file.By convention, the first part of a package name is divided into the reverse order of the Internet domain name of the class creator, which is conduc

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years, but with Java 6, 7, 8, and even 9 of the release, the Java language has

() {System.out.println (j); modifier, otherwise compile error System.out.println (i);//output local inner Class I, The variables in the external method can only be called SYSTEM.OUT.PRINTLN (localinnerclass.this.i) in the form of a parameter, or//the output is i}}inner Inner = new Inner () in the external class;// A local inner class can only be instantiated wit

primarily used to support the main public classes.1. Each compilation unit (file) can have only one public class. This means that each compilation unit has a single common interface, which is represented by the public class. The interface can contain numerous classes that support package access, as required. If there is more than one public class within a compil