how to become good programmer in java

specified class and obtain a list of its methods to support reflection.L There is no way to hide a method against reflection, even if it is private. When you get the method object by class, setting the method's Setaccessible (true) causes any methods to become available. Even after the compiled code, the name of the private method can be displayed through Javap–private, which can be called.LArrays and mutable argument listsL do not allow the size of

conjunction with Nginx and so on, it is very convenient for everyone, will not repeat it. The completion of the deployment, the next log and monitoring, are very common problems, the log has a corresponding library, and monitoring are dependent on professional monitoring platform, their own information output is good, please allow me to show the spring boot Remoteshell terminal monitoring, In addition to the regular HTTP output JSON information (with the health check, meter data, Dump, request

If you're a Java programmer with a passion for technology, here are 10 key points to stand out among the many Java developers.1. Have a solid foundation and a deep understanding of OO principlesFor Java programmers, a deep understanding of the concept of Object oriented programming (OO programming) is a must. Without a

Remoteshell terminal monitoring, In addition to the regular HTTP output JSON information (with the health check, meter data, Dump, request tracking and a series of rest output), but also brought a similar top tall on the device, ssh -p 2000 user@localhost after the execution dashboard can see this real-time update of the interface. Summarize So much to summarize the full text of the view-although go in the language is very good, but also into a lot of best practices, but combined with many con

, Management: Must be familiar with the use of ant to complete project management of common tasks, such as Project compilation, build Javadoc, build jar, version control, automated testing.7, the wrong: should be able to be based on the abnormal information to locate the cause of the problem and approximate location.8, thinking: Must master the main requirements of OOP, so that the use of Java development system to be a real

CloudDocker and VirtualizationMicro-Service ArchitectureV: Performance OptimizationAny out-of-details PPT Architect is bullying, up can be a strategist, down to solve the first-line performance problems, Java technology system, need to understand:Performance Index SystemJVM TuningWeb TuningDB tuningVI: Bottom-level knowledgeFrom the architecture design, to the application layer tuning, and then in-depth understanding of the underlying principles, sol

the relationship between database identities and database primary keys in Hibernate entity classes?What do you know about the relationship between Hibernate association mappings and database foreign keys?Call the Session.save () method, will hibernate definitely issue an INSERT statement? Talk about your understanding.Call the Session.update () method, will hibernate definitely issue an UPDATE statement? Talk about your understanding.Would you please talk about the following nouns, concepts, or

classification of unit tests that I understand2. Benefits of implementing Unit tests3. Java Programmer Unit Testing Tool LibraryDefinition and classification of unit testsThe definition of unit tests refers to the code that programmers write to test the logic code. In my understanding, unit tests are divided into the following two categories:Code testingCode testing refers to the implementation of the code

Program | Programmer Java Programmer must read: basic articles Time: 2001/09/13 13:31 Author: ZSC Pacific Network College 　 2.6 What is an interface An interface is a contract that collects methods and constant forms. When a class executes an interface, it promises to declare that all methods are executed in that interface. An interface is a device or a s

--------------------------Java Training, Android training, look forward to communicating with you! ---------------------------The concept of framework and the principle of reflection implementation Framework Learning SummaryFirst, the concept1. Frame:　　Technical implementation of calls to currently undefined or non-implemented objects through the reflection technology of Java.　　For example: Developers buil

(3,5);2 Changestringvalue (PT1);3System. out. println (PT1);4 }5 //Change B of string in variable to a6 Private Static voidchangestringvalue (Object obj) throws Exception {7Field[] Fields=Obj.getclass (). GetFields ();8 for(Field field:fields) {9 if(Field.gettype () ==string.class){//The comparison is whether the bytecode is the sameTenString old= (String) field.Get(obj); OneString News=old.replace ('b','a'); AField.Set(obj, news); - } -}V. Method classD

"Editor's note" Java is almost an introductory language for many programmers, and is also a popular programming language in the world. Andreas Kull, a foreign programmer, has compiled a very good Java development resource on GitHub and recommended it to everyone. Translation completed by importnew-Tang Yuhua. The following is a list of specific resources. Build

Use super and this to access objects and constructors Use abstract classes and interfaces Handling Exceptions Differentiate among checked exceptions, unchecked exceptions, and Errors Create a try-catch block and determine how to exceptions alter normal program flow Describe the advantages of Exception handling Create and invoke a method that throws an exception "Recognize common exception classes (such as NullPointerException, Arithmeticexcpetion, arrayinde

As a novice programmer interview or technical learning sometimes blind, no clue, in fact, look back, the general aspect is relatively clear.1. Java aspects(1) Java syntax(2) data structure, 8 kinds of basic data types, String, StringBuffer, Stringbuild,map, collection(3) Multithreading, lock, Singleton mode, thread pool(4) Message mechanism(5) agent, design mode(