Summary JVM, JRE, and JDK are three different components used in the development and execution of Java applications. Here are their definitions:* JVM JVM (Java Virtual Machine): The JVM is a virtual machine that is responsible for running Java bytecode. It is an abstract machine that provides a runtime environment in which Java bytecode can be executed. The JVM converts the bytecode into machine language and runs it on the operating system.* JRE JRE (Java Runtime Environment): The JRE is a software package that provides the minimum requirements for executing a Java application. It includes the JVM, class libraries, and other components required to run Java applications but does not include development tools.* JDK

how to use winget this command 1. Open cmd or PowerShell 2. Type "winget" 3.type winget install [app_name] such as PostgreSQL 4.Done ** conclusion*

* 想要的結果 : 當我在寫登入認證機制，加入spring security6的auth機制，沒有帳號要先註冊有了帳號就可以登入，目前的設計為註冊和登入成功都會產生token後端存到redis，並設置緩存時間，最後讓每個打api的都要戴上bearer token，security才可以授予你權利通過否則就是403，把寫好得程式碼進行測試~~~~ (註冊和登入api在auth下因此可不帶token) 1.hello是用來測試的api(我們打開postman測試)，結果如預期403 2.進行註冊(password1和2分別為輸入兩次密碼) 3.利用創立好的email和password登入(200成功複製token)

first I need to say this antotaion "@builder" is not spring antotaion that belongging "lombok " !!1.DI(dependence injection) 2.show this code between this different (constructor) (@builder) console buider pattern maybe caused line of codes "double",

1.下載虛擬機(使用的虛擬機為Virtual Box 並選擇os版本) https://www.virtualbox.org/wiki/Downloads 2.下載 Ubuntu 22.04.1 LTS(選擇 Desktop image) https://releases.ubuntu.com/22.04/ 3.打開Virtual Box