clazz

the example of Standardclassloader, the following standardclassloader for the source of the explanation.Then look at the creation process of WebappClassLoader, WebappClassLoader is instantiated in the Createclassloader method in the Webapploader class by reflection. Below is the source code: Private WebappClassLoader Createclassloader () throws Exception { Class clazz = Class.forName (Loaderclass);// loaderclass= "Org.apache.catalina

) System. out. println (s) ;}} enum Gender {Male, Female} No-argument constructor of the reflection class: @ Test // The non-argument constructor of the reflection Class public void constructor1 () throws Exception {Class clazz = Class. forName ("pro. shaowei. reflect. person "); Constructor c = clazz. getConstructor (); Person p = (Person) c. newInstance (); Person p1 = (Person)

Parameters If (this. Type this. Type. type = 'package '){ If (arguments. length = 2 ){ Var name = arguments [0]; Var body = arguments [1]; } Else { Var name = arguments [0]; Var config = arguments [1]; Var body = arguments [2]; } } Else { If (arguments. length = 1 ){ Var name = 'anonus us '; Var body = arguments [0]; } Else { Var name = 'anonus us '; Var config = arguments [0]; Var body = arguments [1]; } } // Create basic functions of the class Var

(String str, int i) {System.out.format ("Classmethod::callinstancemethod called!--> str=%s, "+" i=%d\n ", str, i);}}header files generated by Accessmethod.class:/* Don't EDIT this file-it are machine generated */#include the implementation of the function prototype in the local code header file:Accessmethod.c#include "Com_study_jnilearn_accessmethod.h"/* * Class:com_study_jnilearn_accessmethod * Method: Calljavastaticmethod * Signature: () V */jniexport void Jnicall java_com_study_jnilearn_acce

;}@Overridepublic String toString() {return "Image [id=" + id + ", image=" + image + "]";}}Write the ing File Basic dao interface for handling all common operations Package tk. blank_hibernate.dao; import java. io. serializable; import java. util. list; import java. util. set; public interface BaseDao {/*** add data ** @ param entity * @ return */void saveObject (Object entity ); /*** delete data ** @ param entity */void deleteObject (Object entity ); /*** delete

the getclass method. 2: each data type (basic data type and referenced data type) has a static attribute class. Disadvantages: You must specify this class first. The first two methods are not conducive to program expansion, because they both need to be completed using specific classes in the program. 3: The method in the class used, the static forname method. If you specify a class name, you can obtain the class bytecode file object. This method has the strongest scalability. You only need to p

getContextObject();......}Here we can see that BinderInternal. getContextObject is a JNI method, which is implemented as follows:~ /Android/frameworks/base/core/jni---- Android_util_Binder.cppstatic jobject android_os_BinderInternal_getContextObject(JNIEnv* env, jobject clazz){ sp b = ProcessState::self()->getContextObject(NULL); return javaObjectForIBinder(env, b);} The familiar ProcessState: self ()-> getContextObject function return

ref) (REF) OBJ). OBJ = This. OBJ; } @ Override Public int hashcode (){ Return obj. hashcode (); } } Private list dedup = new arraylist (); /** * The memory space occupied by the object. the space occupied by the object is not equal to the size of the object, just like a file in Windows (4 K space occupied when the size is 1 byte) * @ Param object * @ Return */ Public int occupyof (Object object ){ Dedup. Clear (); Return occupyof0 (object ); } Private int occupyof0 (Object object ){ If (Objec

. Disadvantages: You must specify this class first. The first two methods are not conducive to program expansion, because they both need to be completed using specific classes in the program. 3: Methods in the class used,StaticFornameMethod. If you specify a class name, you can obtain the class bytecode file object. This method has the strongest scalability. You only need to pass in the class name string. // 1. Obtain the class used for loading based on the given class name String classname = "c

to track the "footprint" of objects ". Class is used to access and save the information. There are three methods to obtain the Class. Sample Code: Package com. reflect. demo; public class ReflectDemo {/** the Java reflection mechanism is in the running state. For any class (class file ), all attributes and methods of this class are available. **/public static void main (String [] args) {System. out. println (createClassDemo_3 (). getName ();} // use the getClass method of the Object Class to ob