Roperties class configuration file & DOS to view the host network situation

Introduction

---

Hello everyone, I am: a pine
Seriously share technology and record learning bits
If sharing is useful to you, please support me

Like: Comment: Favorite: ️
Personal motto: Ideas are implementedThe best time is now!

---

1 Properties class is very convenient to operate .properties configuration file

1.1 Properties common methods

method name	Description
load	Load key-value pairs from the configuration file into the Properties object
list	Display data to the specified device
getProperties(key)	Get value by key
setProperties(key,value)	Set key-value pair to Properties object
store	Store the key-value pair in Properties into the configuration file. If the configuration file contains Chinese in IDEA, it will be converted to the corresponding Unicode encoding

1.2 code example:

public class PropertiesDemo {public static void main(String[] args) throws IOException {// Create Properties objectProperties properties = new Properties();// load fileproperties.load(new FileReader("E:\\Codes\\myProject\\JiShiTongXun\\propertiesDemo\\mysql.properties"));// pass in the standard output streamproperties.list(System.out);// get the valueString user = properties.getProperty("name");String age = properties.getProperty("age");System.out.println("Username: "+user+" Age: "+age);// Set the key-value pair, if the key exists, it is modified, if the key does not exist, create a new oneproperties.setProperty("name","java");// get the valueString user2 = properties.getProperty("name");System.out.println("Username: "+user2+" Age: "+age);// create new fileproperties.setProperty("lookMoonup","zhangjie");// store K-V to fileproperties.store(new FileOutputStream("E:\\Codes\\myProject\\JiShiTongXun\\propertiesDemo\\mysqlsave.properties"),null);System.out.println("Save successfully");}}

2 netstat -an : View the current host network status, including port status and network connection

netstat -an | more: 分页显示

netstat -anb: 可以查看是哪个程序使用端口

Conclusion

Please stay hereSince you see this, why don't you like itlet's go

The purpose of this article is to share the technology and remember the points that need to be paid attention to in the learning process, and record the learning process;
If there is any error, please correct me, if you have any comments or suggestions, please welcomeDiscuss in the comments section