Programmer Think

🔎 This is JAVA Chengxian road. Pay attention to my learning JAVA and don't get lost 👍 If it helps you, give the blogger a free praise to show encouragement Welcome 🔎 give the thumbs-up 👍 Comment collection ⭐ ️ This chapter introduces the construction method, inheritance, rewriting, overloading and creation method in detail. The whole arti ...

1. Succinct JDBC (Java DataBase Connectivity) is a Java API for executing SQL statements. It can provide unified access to a variety of relational databases. It is composed of a group of classes and interfaces written in Java language. JDBC provides a benchmark by which more advanced tools and interfaces can be built to enable database develop ...

🔎 This is JAVA Chengxian road. Pay attention to my learning JAVA and don't get lost 👍 If it helps you, give the blogger a free praise to show encouragement Welcome 🔎 give the thumbs-up 👍 Comment collection ⭐ ️ Array and two-dimensional array feel that it should be easier to understand by taking the equipment column of King glory as an exa ...

1, Method overview Not to mention what the method is, let's look at the code and analyze where the program has shortcomings and how to improve it. Do not use method int x = 10; int y = 20; System.out.println(x+"+"+y+"="+(x+y)); System.out.println(x+"+"+y+"="+(x-y)); int x1 = 100; int y1 = ...

1, Project introduction The main functions of the project are: select a class from the drop-down list, and click the query button to display the table displaying student information at the bottom of the page As shown in the figure: Main technologies used: three SSM frameworks, AJAX, jQuery, BootStrap, etc Project objective: to i ...

Multithreading tutorial (34) AQS principle 1. General Its full name is AbstractQueuedSynchronizer, which is the framework of blocking locks and related synchronizer tools characteristic: The state attribute is used to represent the state of resources (exclusive mode and shared mode). Subclasses need to define how to maintain this state and ...

1, Operator 1.1.1 overview of operators Operator refers to the operation of operands. 1.1.2 arithmetic operators public class Test02 { public static void main(String[] args) { //Arithmetic operator //Addition, subtraction, multiplication and division int a = 10; int b = 3; System.out.println(a + ...

Day4: enter, if, switch When implementing branch judgment, a good habit is to put the judgment with high matching success rate in front, which can improve efficiencyIn the expression judgment, we try to use the determined value to judge with the uncertain value Execution process in the program: Sequencing: starting from the main method ...

Multithreading tutorial (XXIX) immutable design Common invisibility designs include time formats and string s Take string as an example to illustrate the elements of immutable design public final class String implements java.io.Serializable, Comparable<String>, CharSequence { /** The value is used for character storage. */ ...

Personal homepage: Hello Code. This column: Java Web from introduction to actual combat It is long and not finished, and the follow-up content will be continuously updated This article will also be published in sections for your convenience If you don't have Java foundation, please go first Java zero foundation guide Column learning correspondi ...