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Using Maven in the IDE IDE tools MyEclipse Integrated maven plug-in Eclipse ​ Eclipse For Java EE IDEA Integrated Maven plug-in In IDE Configure Maven Specify maven installation directory and configuration fileAutomatically update maven projects: check import projects automatically (2020 version: Ctrl + Shift + O) Create Maven proje ...

IOC starting example analysis Raw data 1. Create a blank maven project 2. Write a UserDao interface first public interface UserDao { public void getUser(); } 3. Write Dao's implementation class again public class UserDaoImpl implements UserDao { @Override public void getUser() { System.out.println("Get user"); } } 4. ...

1. What is reflection 1. First knowledge reflex When I first started to learn reflection, I was confused. This thing is really "abstract mother opens the door to abstract - abstract is home." Why do you need to get the Class object before creating an object? Isn't that unnecessary? Isn't it easier for me to new directly? What is ...

Write before: Continue to record your MyBatis learning journey. If you don't understand it, it is recommended to read it first Previous blogs , detailed codes can be found in My Gitee warehouse SSM learning Clone download learn to use! 3.11 annotation development 3.11.1 notes MyBatis can also be developed with annotations to reduce the writi ...

SMBMS Basic architecture database Database architecture [the external chain image transfer fails. The source station may have an anti-theft chain mechanism. It is recommended to save the image and upload it directly (img-vli3iozs-1626496921096) (C: \ users \ Hasee \ appdata \ roaming \ typora user images \ image-20210715140247552. PNG)] ...

1. Release mvn deploy is used to distribute the artifacts generated by the project to the remote Maven warehouse. The components of the local Maven warehouse can only be used by the current user. After being distributed to the remote Maven warehouse, all users who can access the warehouse can use your components. To do this, you need to creat ...

Like and watch again to form a habit catalogue 1. Definition of array 2. array traversal 3. Conversion between List and array 4. Possible problems Regular benefits 1. Definition of array Declare before use Data type [] array name = new data type [length]; String[] arr3 = new String[5]; Data type array name [] = new data type ...

1. The concept of generics Generic concept Generic type: parameterized type, that is, the type of data to be operated is uncertain at the beginning. Only when it is used can it be determined. Specify the data type to be operated as a parameter, and pass in a specific type when it is used to realize code templating. 2. Problems encountered in ...

1, What is a filter 1. Filter is one of the three major components of Java Web. The three components are: Servlet program, Listener listener and filter filter 2. Filter is a Java EE specification. That is, the interface. 3. The function of Filter is to intercept requests and Filter responses. Common application scenarios: 1. Permission che ...

The running result of the following Java code is public class Dog { String name=null; int age = 10; public Dog() { this.name = "Wangcai"; this.age = 20; } public void show(){ System.out.println("Name:" + name + "age:" + age); } public static void main(String[] args) { new Dog().show(); } } //Name: Wangcai age: 20 I ...