How to show open database connections in MySQL
How to show open database connections in MySQL using show status and show processlist command.
How to check the JDK version of a class file
When running a Java application it is mandatory that the JRE version to match or to be higher that the JDK version used to compile the application.
You will get the "Unsupported major.minor version 52.0" error when trying to run an Java 1.8 application using a lower version of Java.
Abstract keyword in Java
The abstract keyword is used in Java for abstraction. The abstraction is the process of selecting data and displaying only the relevant details to the object. If helps to reduce the programing complexity and the efort.
Robots.txt File in SEO
A robots.txt file tells search engine crawlers which pages or files the crawler can or can't request from your site.
This is used mainly to avoid overloading your site with requests; it is not a mechanism for keeping a web page out
of Google. To keep a web page out of Google, you should use noindex directives, or to password-protect
your page.
How to fix mspdb100.dll is missing from your computer
How to fix The program can't start because mspdb100.dll is missing from your computer. Try reinstalling the program to fix this problem. by adding the VC 10.0 IDE on the Windows system environment variables or by running the vcvars32.bat for the current session.
How to delete the Windows.old folder from Windows 10
If you recently update your OS to Windows 10, you might notice that you are running out of space. If this is happening it might be because the old version of the Windows is not yet deleted from the disk, it is stored into "Windows.old" folder. And depending on the size of that version, it could be taking a lot of precious space.
