java study guide

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

JNI/NDK Development Guide (6) -- C/C ++ access Java instance methods and static methods, jnindk Reprinted please indicate the source: http://blog.csdn.net/xyang81/article/details/42582213 In the previous five chapters, we learned how to use the JNI function to access the basic data types, strings, and arrays in the JVM. Next, we will learn how the local code works with any object in the JVM.AttributeAndMe

Java gui programming Overview Study Notes (22), gui Study Notes The following content is my study notes on the java video tutorial of Miss Bi Xiangdong! Java gui programming:Windows provides two methods:1. GUI2. CLI;GUI: Grahi

Author: Cheron Link: https://www.zhihu.com/question/29581524/answer/44872235 Source: Know Copyright belongs to the author, reprint please contact the author to obtain authorization. Now the Internet is rich in resources, Java learning is not difficult. The introduction and Advanced Guide to the Java service side is for beginners in our group, including learning

controller useSimplifying Javaweb development with the Springboot framework1.SpringBoot Introduction 2.SpringBoot Advantages and features 3.SpringBoot application scenario 4.SpringBoot installation and use 5.SpringBootAPI introduction 6.SpringBoot integration Maven 7. Springboot Integrated MyBatis 8.SpringBoot integrated SPRINGMVCActual combat1. Test and evaluate your own Javaweb Project 2. Develop OA Office system using SSM frameworkAdvanced articlesuitable/suitable for crowd: Developers who a

Java Study Notes 2 -- data type, array, Study Notes 2 -- URL: http://www.cnblogs.com/archimedes/p/java-study-note2.html.1. Data Type Java data types include: Primitive Data Types) Reference type)

Java Study Notes-JDBC and Study Notes-jdbcIntroduction to JDBC 1. to simplify and unify database operations, SUN defines a set of Java database operation specifications, called JDBC.2. database-driven3. JDBC is called JAVA DataBase commecti.pdf (

Java programming ideology Study Notes (1), programming ideology Study NotesObject Introduction 1. Abstract all programming languages provide abstract mechanisms. For example, assembly is a slight abstraction of the machine, and C language is an abstraction of assembly. In comparison, these languages have strong limitations in solving problems. Because they force

Java Study Notes-JDBC6 (21), study notes jdbc6 1. Use a dynamic proxy to write the connection pool Design: Proxy target: Native connection. Proxy purpose: Modify the close method so that the close method cannot close the connection and actively detaches the connection. Communicate with the thread through a dynamic Proxy: 1: proxy for Cxonnection. 2: The Connecti

ActionListener () { Span class= "hljs-function" >public void actionperformed (ActionEvent evt) {B.setlabel (new Integer (++count). toString ()); //every click of the button, the number on the button will be added 1}); F.add (b); //Add button f.setsize (100,200); //set Form size f.setbackground (Color.pink); //set the form color f.setvisible (true); //set form Visible}} 5. Pair programming: Object-oriented design (big job 2-very important, unfinished-2)Continue to refine last week's

). Collect (Collectors.tolist ()); List1. ForEach (E->system.out.println (e));Results:4.3 When building the test set, in addition to the normal student object, add some null to the collection, and then rewrite 4.2 so that it does not appear an exception.Generic class: Generalstack (Topic 5-5)5.1 Your Submission results (Advent number)5.2 Code for Generalstack interfaceInterface Generalstack5.3 What are the benefits of generics?No restriction of element types after generics, no more coercion of

Java Study Notes (1) Java recognition and java notes 1. Java introduction: Java technology consists of the Java language, Java Runtime Envir

: Explain the module you are responsible for, and paste the key code of your own module (the number and name of the school). 3: Code Cloud and PTA3.1: Code cloud codes Submission record3.2: "Multi-threaded" PTA Submission List3.3: Count the amount of code done this week Week Time Total code Amount new increase in code volume Total Folder Add new Folder 1 114 114 11 11 2 520 50W 16 6

10 6680 985 102 18 4: Evaluate how much you understand Java Dimension of Grammar Some basic grammar is not a problem, but there are some unskilled grammar, need Baidu Object-oriented design This aspect is weak, has the basic logic of thinking, in doing the shopping cart big homework often will make mistakes, do not know where to start

Java study notes 18 --- final keywords modify variables, methods, and classes, study notes 18 --- final The word final in English is known as "final". In fact, it also means"Unchangeable". In Java,The final keyword is "unchangeable" to better explainThat is, the final modifier is "unchangeable ". Final can modify varia

Java Study Notes-JDBC4 (19), study notes jdbc4 16Database transactions 16.1 bank deposits # Create table account (accountid varchar (18), # account balance double () # balance) # deposit table create table inaccount (accountid varchar (18 ), # account inbalance double (100) # deposit balance): Insert into inaccount (accountid, inbalance) values ('123', 500612345

Java study notes 23 --- internal class local internal class can only access final local variables, study notes 23 --- A local internal class is a class defined in the method body or code block. It has been briefly introduced in note 19. Today we will discuss why local internal classes can only access local variables that are constants. Author: blog garden-Chan P

Java Study Notes-11. type identification during runtime, Study Notes-11 1. The getClasses () method of the Class Object obtains all public internal classes in the Class and internal classes inherited from the parent Class and parent interface. The getinterfaces () method returns all interfaces inherited by the class. Import javax. print. attribute. standard. prin

Java Study Notes 21 --- supplementary description of internal classes of members (2) (corrected), Study Notes 21 --- Fixed: the original article was a bit incorrect, mainly concerning the subclass of the member's internal classes. Due to my cognitive limitations, I think that the subclass of the internal class should also be an internal class.The points of intern

Java Study Notes day05 and Study Notes day05 1. Method overload A method with the same name is allowed in the same class, as long as the parameter list of the method is different. Different parameter lists: different parameter numbers, different parameter types, and different order. Public class MethodOverLoadDemo {public static void main (String [] args) {}