The hosts file is used to store IP domain mappings configuration in your local computer, it acts like a domain name server running on your computer locally. In the article How To Edit Hosts File In Windows 10, we have told you how to edit the hosts file in windows. This article will tell you […]
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Python has a built-in SMTPD module, this module can act as an email SMTP server that runs on localhost or any specified email domain. But it does not really send the email out to the target email server, it just discards the email and prints out the email content on the console. This article will
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Apache James is a popular open-source mail server. It supports both SMTP, POP3, and IMAP protocols. This article will tell you how to install Apache James both on Windows and Linux, how to create a user account on it, and how to use the free email client tool Thunderbird to connect to it to send
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In windows, the hosts file is used to resolve domain and IP address mapping, so when you use a domain name in a web browser or other client tool, windows will first find the domain’s related IP address in the hosts file, if found then use that IP to communicate with the server, if not
How To Edit Hosts File In Windows 10 Read More »
This article will tell you how to install and run the android studio on Linux. It is not similar to Windows and macOS. If you are a beginner to the android studio, this is very helpful to you.
How To Install And Run Android Studio On Linux Read More »
This example will tell you how to use spring boot data JPA to implement insert, update, delete and select database table operation on MySQL database table. With spring boot data JPA the database table operation command has been wrapped to a method, you just need to create a java interface that extends basic spring boot
Spring Boot CRUD Example With MySQL Read More »
In my recent spring boot example project, I use spring boot data JPA to operate the MySQL server table. And when I invoke the CrudRepository‘s save method to implement insert action to the table, it shows below error, the error message is “table ‘dev2qa_example.hibernate_sequence’ doesn’t exist”. This error cost me some time to fix, and
Resolve Spring Boot JPA Table ‘dbname.hibernate_sequence’ Doesn’t Exist Error Read More »
In the article How To Install ShadowSocks On Google Cloud Linux, we have learned how to set up and configure ShadowSocks server on google cloud Linux, but how about AWS, this article will tell you how to run ShadowSocks on an AWS virtual machine.
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My host machine OS is Windows 10, and I install oracle VirtualBox on it. The guest OS in the VirtualBox virtual machine is Ubuntu 18.04.1. I use the Ubuntu OS normally for example code development. But one day when I start the Ubuntu virtual machine, I find the network does not work correctly. I can
How To Resolve Ubuntu Virtualbox Network Is Unreachable Error Read More »
When you develop a java project in eclipse, of course, you want to make class import automatically when you type a class name, especially when you copy & paste huge java source code to your java file. This article will tell you how to import java class automatically in eclipse.
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