How to make package in java ?

Today we will learn how to make package in java, but before making java package , first of all we should know about what is java package ,and why it needs.? Basically package are like folders which contain java class files.package are made when we want to use some set of code or values in another program.it decrease the size of program.when we make any project we make package so the program become readable and usable.when we make package we can import it any program. ...

How to automatically shutdown your system after certain duration of time

How to automatically shutdown your system after certain duration of time ? What happen sometimes you work on your computer and you know whatever the task you are doing (eg. downloading games) will take how much time and you have to do some other work in that time or go outside or you may sleep so, in that case you can set the timer to automatically shutdown the system. ...